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Littérature scientifique sur le sujet « LiBH4 »

Auteur : Grafiati
Publié le 9 mars 2023
Mis à jour le 10 mars 2023

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Articles de revues sur le sujet "LiBH4"

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de Kort, Laura M., Valerio Gulino, Didier Blanchard et Peter Ngene. « Effects of LiBF4 Addition on the Lithium-Ion Conductivity of LiBH4 ». Molecules 27, no 7 (28 mars 2022) : 2187. http://dx.doi.org/10.3390/molecules27072187.

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Complex hydrides, such as LiBH4, are a promising class of ion conductors for all-solid-state batteries, but their application is constrained by low ion mobility at room temperature. Mixing with halides or complex hydride anions, i.e., other complex hydrides, is an effective approach to improving the ionic conductivity. In the present study, we report on the reaction of LiBH4 with LiBF4, resulting in the formation of conductive composites consisting of LiBH4, LiF and lithium closo-borates. It is believed that the in-situ formation of closo-borate related species gives rise to highly conductive interfaces in the decomposed LiBH4 matrix. As a result, the ionic conductivity is improved by orders of magnitude with respect to the Li-ion conductivity of the LiBH4, up to 0.9 × 10−5 S cm−1 at 30 °C. The insights gained in this work show that the incorporation of a second compound is a versatile method to improve the ionic conductivity of complex metal hydrides, opening novel synthesis pathways not limited to conventional substituents.
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Chen, X. Y., Y. H. Guo, L. Gao et X. B. Yu. « Improved dehydrogenation of LiBH4 supported on nanoscale SiO2 via liquid phase method ». Journal of Materials Research 25, no 12 (décembre 2010) : 2415–21. http://dx.doi.org/10.1557/jmr.2010.0301.

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A wet loading method was developed to produce nano-sized LiBH4 combined with nano-SiO2 templates. The multicomponent LiBH4/SiO2 material synthesized by the wet method has been found to dehydrogenate at much lower temperatures than the pure LiBH4, as well as LiBH4/SiO2 mixtures prepared by ball milling. For example, the onset of dehydrogenation was decreased to about 200 °C for a wet-treated LiBH4/SiO2 mixture with a mass ratio of 1:1, and the majority of the hydrogen could be released below 350 °C. The improved dehydrogenation of the wet-treated LiBH4/SiO2 mixtures can be attributed to the destabilization of SiO2, resulting in the formation of lithium metasilicate (Li2SiO3) upon heating, and the confinement of LiBH4 to form nanoscale particles.
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Xu, Lan, Yu Wang, Ling tong Zhou, Wei Xia, Zhu jian Li, Mei Qiang Fan et Yong Jin Zou. « Enhanced Hydrogen Generation by LiBH4 Hydrolysis in MOH/water Solutions (MOH : C2H5OH, C4H8O, C4H9OH, CH3COOH) for Micro Proton Exchange Membrane Fuel Cell Application ». Journal of New Materials for Electrochemical Systems 17, no 2 (15 mai 2014) : 077–83. http://dx.doi.org/10.14447/jnmes.v17i2.427.

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LiBH4 has high hydrogen storage capacity, and its high gravimetric hydrogen density reaches 18.36%. However, LiBH4 exhibits poor hydrolysis performance in water because the abrupt ending caused by the agglomeration of its hydrolysis products limits its full utilization [1, 2]. In this paper, four kinds of organics, namely, ethanol, tetrahydrofuran, acetic acid, and butanol (referred to MOH) were added to water, and the effect of MOH species and amount on the hydrolysis performances of LiBH4 was evaluated. Results show that agglomeration can be avoided and that LiBH4 has a controllable hydrogen generation rate and high hydrogen generation amount inMOH/water solutions compared with that in pure water. The order in terms of the hydrolysis performance of LiBH4 in MOH/water solutions is as follows: acetic acid >butanol> tetrahydrofuran >ethanol. From XRD, SEM, and other analyses, the enhancement performance is explained by the diluting and solvent effects. Moreover, the addition of MOH alters the hydrolysis route of LiBH4. MOH acts as not only a carrier for water and LiBH4 but also as a reactant to form intermediate LiBH4·[MOH(H2O)x]y, which slows the hydrolysis kinetics of LiBH4. Hydrolysis conditions were optimized, and high hydrogen amount was achieved correspondingly. The experimental data presents the potential application of LiBH4 as a highly efficiency and stable hydrogen source for fuel cells.
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Leiner, Stefanie, Peter Mayer et Heinrich Nöth. « Synthesis and Structures of LiBH4 Complexes with N-Heterocycles [1] ». Zeitschrift für Naturforschung B 64, no 7 (1 juillet 2009) : 793–99. http://dx.doi.org/10.1515/znb-2009-0703.

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LiBH4 solutions in diethyl ether or tetrahydrofuran react with N-methylmorpholine, Nmethylimidazole or piperidine not only with the formation of adducts LiBH4(L)n (n = 1 or 3) but also with formation of amine boranes BH3(L). While LiBH4 and N-methylimidazole form the 1 : 3 adduct 1, N-methylmorpholine produces the 1 : 1 adduct 2. In both cases the adducts contain hexacoordinated Li atoms. In 1 the Li atom is coordinated to three N atoms and three H atoms. However, in compound 2 the molecules are connected in the solid state with one another to form a two-dimensional polymer built from dimeric units (LiBH4)2 that are connected to adjacent dimeric units via the O and N atoms of the N-methylmorpholine ligand. Each of the Li atoms in 2 is connected to four H atoms via Li-H-B hydrogen bridges and an O and an N atom. The reaction of LiBH4 with piperidine leads to the compound (LiBH4)6(HNC5H10)16, 3, which consists of two independent LiBH4(HNC5H10)3 molecules and two others of composition (LiBH4)2(HNC5H10)5 containing penta- and hexacoordinated Li atoms.
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Puszkiel, Julián, Aurelien Gasnier, Guillermina Amica et Fabiana Gennari. « Tuning LiBH4 for Hydrogen Storage : Destabilization, Additive, and Nanoconfinement Approaches ». Molecules 25, no 1 (31 décembre 2019) : 163. http://dx.doi.org/10.3390/molecules25010163.

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Hydrogen technology has become essential to fulfill our mobile and stationary energy needs in a global low–carbon energy system. The non-renewability of fossil fuels and the increasing environmental problems caused by our fossil fuel–running economy have led to our efforts towards the application of hydrogen as an energy vector. However, the development of volumetric and gravimetric efficient hydrogen storage media is still to be addressed. LiBH4 is one of the most interesting media to store hydrogen as a compound due to its large gravimetric (18.5 wt.%) and volumetric (121 kgH2/m3) hydrogen densities. In this review, we focus on some of the main explored approaches to tune the thermodynamics and kinetics of LiBH4: (I) LiBH4 + MgH2 destabilized system, (II) metal and metal hydride added LiBH4, (III) destabilization of LiBH4 by rare-earth metal hydrides, and (IV) the nanoconfinement of LiBH4 and destabilized LiBH4 hydride systems. Thorough discussions about the reaction pathways, destabilizing and catalytic effects of metals and metal hydrides, novel synthesis processes of rare earth destabilizing agents, and all the essential aspects of nanoconfinement are led.
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He, Qing, Dongdong Zhu, Xiaocheng Wu, Duo Dong, Xiaoying Jiang et Meng Xu. « The Dehydrogenation Mechanism and Reversibility of LiBH4 Doped by Active Al Derived from AlH3 ». Metals 9, no 5 (13 mai 2019) : 559. http://dx.doi.org/10.3390/met9050559.

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A detailed analysis of the dehydrogenation mechanism and reversibility of LiBH4 doped by as-derived Al (denoted Al*) from AlH3 was performed by thermogravimetry (TG), differential scanning calorimetry (DSC), mass spectral analysis (MS), powder X-ray diffraction (XRD), scanning electronic microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR). The results show that the dehydrogenation of LiBH4/Al* is a five-step reaction: (1) LiBH4 + Al → LiH + AlB2 + “Li-Al-B-H” + B2H6 + H2; (2) the decomposition of “Li-Al-B-H” compounds liberating H2; (3) 2LiBH4 + Al → 2LiH + AlB2 + 3H2; (4) LiBH4 → LiH + B + 3/2H2; and (5) LiH + Al → LiAl + 1/2H2. Furthermore, the reversibility of the LiBH4/Al* composite is based on the following reaction: LiH + LiAl + AlB2 + 7/2H2 ↔ 2LiBH4 + 2Al. The extent of the dehydrogenation reaction between LiBH4 and Al* greatly depends on the precipitation and growth of reaction products (LiH, AlB2, and LiAl) on the surface of Al*. A passivation shell formed by these products on the Al* is the kinetic barrier to the dehydrogenation of the LiBH4/Al* composite.
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LIU, YONGFENG, HAI ZHOU, YUFAN DING, MINGXIA GAO et HONGGE PAN. « LOW-TEMPERATURE HYDROGEN DESORPTION FROM LiBH4–TiF4 COMPOSITE ». Functional Materials Letters 04, no 04 (décembre 2011) : 395–99. http://dx.doi.org/10.1142/s1793604711002305.

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Approximately 6.3 wt.% of hydrogen is released from a LiBH4–0.25TiF4 combination below 150°C. Hydrogen desorption from the LiBH4–0.25TiF4 combination undergoes a quite different reaction process with respect to the LiBH4–0.33TiF3 mixture due to the higher oxidation state of Ti4+ and the lower mean bond cleavage energy of Ti–F bonds in TiF4 . This finding provides a viable approach for significantly decreasing the dehydrogenation temperature of LiBH4 by optimizing the additives with high oxidation valency.
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Ghaani, Mohammad R., Michele Catti et Niall J. English. « In Situ Synchrotron X-ray Diffraction Studies of Hydrogen-Desorption Properties of 2LiBH4–Mg2FeH6 Composite ». Molecules 26, no 16 (11 août 2021) : 4853. http://dx.doi.org/10.3390/molecules26164853.

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Adding a secondary complex metal hydride can either kinetically or thermodynamically facilitate dehydrogenation reactions. Adding Mg2FeH6 to LiBH4 is energetically favoured, since FeB and MgB2 are formed as stable intermediate compounds during dehydrogenation reactions. Such “hydride destabilisation” enhances H2-release thermodynamics from H2-storage materials. Samples of the LiBH4 and Mg2FeH6 with a 2:1 molar ratio were mixed and decomposed under three different conditions (dynamic decomposition under vacuum, dynamic decomposition under a hydrogen atmosphere, and isothermal decomposition). In situ synchrotron X-ray diffraction results revealed the influence of decomposition conditions on the selected reaction path. Dynamic decomposition of Mg2FeH6–LiBH4 under vacuum, or isothermal decomposition at low temperatures, was found to induce pure decomposition of LiBH4, whilst mixed decomposition of LiBH4 + Mg and formation of MgB2 were achieved via high-temperature isothermal dehydrogenation.
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Yan, Xia Yan, You Li, Jie Du, Xiao Na Luo et Cheng Qin. « Preparation of High Weight Loading Lithium Borohydride in Carbon Aerogels ». Advanced Materials Research 631-632 (janvier 2013) : 287–90. http://dx.doi.org/10.4028/www.scientific.net/amr.631-632.287.

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We describe approaches using modified carbon aerogels for increasing the weight loading of LiBH4. Large pore volume carbon aerogels were prepared with a sol-gel method and a polymethyl methacrylate (PMMA) microsphere template. Compared to those without using templates, the pore volume has been up to 3.8 times with a PMMA template. After incorporation into carbon aerogels, the weight loading of LiBH4 has reached 80%. Nitrogen absorption/desorption measurements show that more than 95% free space of carbon aerogels has been incorporated with LiBH4. Rama spectra suggest that there is no PMMA or chemical reaction during the synthesis of LiBH4/carbon aerogel composites.
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Kim, Ji Woo, Kee-Bum Kim, Jae-Hyeok Shim, Young Whan Cho et Kyu Hwan Oh. « Microstructural Characterization of Dehydrogenated Products of the LiBH4-YH3 Composite ». Microscopy and Microanalysis 20, no 6 (28 octobre 2014) : 1798–804. http://dx.doi.org/10.1017/s1431927614013373.

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AbstractThe dehydrogenated microstructure of the lithium borohydride-yttrium hydride (LiBH4-YH3) composite obtained at 350°C under 0.3 MPa of hydrogen and static vacuum was investigated by transmission electron microscopy combined with a focused ion beam technique. The dehydrogenation reaction between LiBH4 and YH3 into LiH and YB4 takes place under 0.3 MPa of hydrogen, which produces YB4 nano-crystallites that are uniformly distributed in the LiH matrix. This microstructural feature seems to be beneficial for rehydrogenation of the dehydrogenation products. On the other hand, the dehydrogenation process is incomplete under static vacuum, leading to the unreacted microstructure, where YH3 and YH2 crystallites are embedded in LiBH4 matrix. High resolution imaging confirmed the presence of crystalline B resulting from the self-decomposition of LiBH4. However, Li2B12H12, which is assumed to be present in the LiBH4 matrix, was not clearly observed.
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Thèses sur le sujet "LiBH4"

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Bösenberg, Ulrike Verfasser], et Rüdiger [Akademischer Betreuer] [Bormann. « LiBH4-MgH2 Composites for Hydrogen Storage : LiBH4-MgH2 Komposite für die Wasserstoffspeicherung / Ulrike Bösenberg ; Betreuer : Rüdiger Bormann ». Hamburg : Universitätsbibliothek der Technischen Universität Hamburg-Harburg, 2009. http://d-nb.info/1175884405/34.

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Rivera, Luis A. « Destabilization and characterization of LiBH4/MgH2 complex hydride for hydrogen storage ». [Tampa, Fla.] : University of South Florida, 2007. http://purl.fcla.edu/usf/dc/et/SFE0001984.

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Morin, François. « Effet de la pression et de l'addition de fer sur la désorption du système LIBH4 + MgH2 ». Thèse, Université du Québec à Trois-Rivières, 2012. http://depot-e.uqtr.ca/4464/1/030300172.pdf.

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Marizy, Adrien. « Super-hydrures sous pression pour le stockage de l’hydrogène et la supraconductivité : développement d’outils et résultats sur H3S, CrHx, LiBH4 et NaBHx ». Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLX115/document.

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Récemment, sous des pressions de plusieurs gigapascals, de nouveaux hydrures ont été synthétisés avec des propriétés étonnantes potentiellement porteuses de ruptures technologiques pour le stockage de l’hydrogène ou la supraconductivité. Plusieurs superhydrures sont étudiés expérimentalement et simulés par DFT dans cette thèse. Les diagrammes de phases en pression de LiBH4 et NaBH4, deux composés d’intérêt pour le stockage de l’hydrogène, sont explorés par diffraction de rayons X, spectroscopie Raman et infrarouge jusqu’à des pressions de 300 GPa sans observer de décomposition. L’insertion d’hydrogène dans NaBH4 donne le super-hydrure NaBH4(H2)0.5. Pour éclaircir l’interprétation de la supraconductivité record à 200 K trouvée dans H2S sous pression, le super-hydrure H3S a été synthétisé à partir des éléments S et H. Les résultats de diffraction semblent en désaccord avec l’interprétation communément admise qu’H3S en phase Im-3m est responsable de cette supraconductivité et laisse la porte ouverte à d’autres interprétations. Enfin, les super-hydrures CrHx avec x=1, 1.5 et 2 ont également été synthétisés à partir des éléments et caractérisés par diffraction de rayons X. Si ces hydrures correspondent bien àceux qui avaient été prédits numériquement, l’absence des stoechiométries plus élevées est discutée. Pour mesurer les températures de supraconductivité calculées dans les superhydrures MHx, une cellule à enclumes de diamant miniature permettant une détection de l’effet Meissner a été développée
Recently, under pressures of several gigapascals, new hydrides have been synthesised with striking properties that may herald technological breakthroughs for hydrogen storage and superconductivity. In this PhD thesis, several superhydrides have been studied experimentally and simulated by DFT. The pressure phase diagrams of LiBH4 and NaBH4, two compounds of interest for hydrogen storage, have been explored thanks to X-ray diffraction and Raman and infrared spectroscopy up to pressures of 300 GPa without observing any decomposition. The insertion of hydrogen inside NaBH4 generates the superhydride NaBH4(H2)0.5. To refine the interpretation of the record superconductivity found in H2S under pressure at 200 K, the superhydride H3S has been synthesised from S and H elements. The results of the diffraction study seem to be at odds with the commonly accepted interpretation that Im-3m H3S is responsible for the superconductivity observed and leaves the door open to other interpretations. Finally, CrHx hydrides with x = 1, 1.5 and 2 have also been synthesised from the elements and characterised by X-ray diffraction. Although these hydrides do correspond to the ones that had been numerically predicted, the absence of the expected higher stoichiometries is discussed. To measure the superconductivity temperatures calculated for MHx hydrides, a miniature diamond anvil cell which allows the detection of a Meissner effect has been developed
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GHAANI, MOHAMMAD REZA. « Study of new materials and their functionality for hydrogen storage and other energy applications ». Doctoral thesis, Università degli Studi di Milano-Bicocca, 2014. http://hdl.handle.net/10281/49808.

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The first part of this thesis deals with hydrogen storage materials, in view of their applications as promising energy carriers. One of the main open problems with these materials is: how can their decomposition temperature be lowered, when hydrogen is wanted to be released, so as to improve the energy efficiency of the process. A possible answer is given by joint decomposition of two or more hydrides, if very stable mixed compounds are formed (‘hydride destabilization’). Aiming at this result, the new hydride composite 2LiBH4-Mg2FeH6 was considered, it was synthesized, and its thermodynamic and kinetic properties were investigated. In the second part of this thesis work lithium oxide materials, of relevant interest for applications to batteries, were investigated. The chemical lithiation reaction of niobium oxide was considered, as equivalent to the electrochemical process of lithium insertion on discharging a Nb2O5 cathode vs. a metal Li anode. Thus, the Li2Nb2O5 compound was synthesized by reaction of monoclinic a-Nb2O5 with n-butyllithium.This material was investigated by neutron powder diffraction (D2B equipment at ILL, France) and its structure was Rietveld refined in space group P2 to wRp=0.045, locating the Li atoms inserted in the a-Nb2O5 framework.
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Šašek, Martin. « Charakterizace elektrolytů na bázi směsi iontová kapalina a aprotické rozpouštědlo ». Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-318870.

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The thesis deals with liquid aprotic electrolytes based on mixtures of ionic liquid and solvent. EmimBF4, namely 1-ethyl-3-ethylimidazolium tetrafluoroborate, was used as the starting ionic liquid. A mixture of propylene carbonate, ethylene carbonate and dimethyl carbonate was used as solvents. Electrolytes were enriched with two electrolyte salts LiBF4 and NaBF4 from the resulting mixtures selected the most suitable electrolytes for Li-ion and Na-ion accumulators. Electrolytes were selected taking into account the required properties: the width of the potential window, the measured electrical conductivity and, last but not least, the safety.
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Третьяков, Дмитро Олегович. « Фізико-хімічні властивості систем сіль літію (LiBF4, LiCIO4, LiNO3, LiSO3CF3, LiN(SO2CF3)2) - апротонний диполярний розчинник ((CH3)2SO2, (C2H5)2SO2,(CH3)2SO, C3H4O3, C8H18O4) ». Diss. de candidat en sciences chimiques, Міжвідомче відділ. електрохім. енергетики Нац. акад. наук України, 2012.

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Lee, Jeremy J. « Fabrication and Characterizations of LAGP/PEO Composite Electrolytes for All Solid-State Lithium-Ion Batteries ». Wright State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=wright1527273235003087.

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Cheng, Yi-Ting, et 鄭宜庭. « The Effect of Pd and Co Additives on the Enhancement of the Dehydrogenation Characteristics for LiBH4 and LiBH4+2LiNH2 systems ». Thesis, 2011. http://ndltd.ncl.edu.tw/handle/87727432772319427866.

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碩士
國立中央大學
材料科學與工程研究所
99
LiBH4 is a potential hydrogen storage material and gains lots of interests recently due to the extremely high hydrogen capacity (18.4 wt%). However, the initial decomposition temperature (Ti) and main dehydrogenation temperature (Tm) of LiBH4 are as high as 567 and 754 K, respectively. In order to overcome the drawbacks, there are several approaches developed to modify the system thermodynamically or kinetically. In this study, LiBH4 is modified by various additives or mixing with LiNH2 to form a new Li-B-N-H quaternary hydride by ball-milling process. Besides, their dehydrogenation properties are analyzed through temperature programmed reduction (TPR) and temperature programmed dehydrogenation-mass spectrometers (TPD-MS), and the phase structures of the systems are characterized by the X-ray powder diffraction (XRD) method. Based on the results, it can be observed that the dehydrogenation properties of the LiBH4 can be successfully improved by doping 33 wt% of Pd-Co/C additives, and among the three different samples, Pd25Co75/C doped sample shows the optimal enhancement in promoting the dehydrogenation properties of LiBH4¬ by reducing the Ti to 523 K with the capacity as 10.5 wt%. Besides, it is found out that when the Co content in the additives increases, the Tis gradually decrease and capacities gently increase. Moreover, for the system modified by various amounts of Pd-Co/C, the results reveal that when the system is modified by 50 wt% of Pd-Co/C, Pd50Co50/C doped sample has better performance than Pd75Co25/C and Pd25Co75/C doped samples, which Ti and Tm can decrease to 533 and 639 K with 10 wt% of hydrogen desorbed. On the other hand, for 33 wt% of Pd-Co/C modified LiBH4+2LiNH2 binary system, the sample doped with Pd50Co50/C shows the effective modification, and the Ti is dramatically reduced from 523 K of the pristine binary system to 396 K and the capacity is 9.5 wt%. In terms of various metal (Pd and Co) chlorides and hydroxides modified LiBH4 and binary systems, the improvement of the dehydrogenation properties can both be observed. However, the reasons of the enhancements by metal chlorides and hydroxides may be different. For LiBH4 systems, the metal chlorides modified samples may have some ion exchange reactions and then form the unstable transition metal borohydrides during the heating process, thus the dehydrogenation properties can be enhanced. However, for metal hydroxides doped samples, the enhancement may be ascribed as the combinational effects of hydrolysis and redox reactions during the decomposition processes. On the other hand, for the metal (Pd and Co) chlorides and hydroxides modified binary systems, although the Tis and Tms can both significantly decrease to lower temperature ranges, the capacities of the samples modified by metal hydroxides also conspicuously reduce. Therefore, metal chlorides modified binary samples shows the better performance in improving the dehydrogenation properties than metal hydroxides.
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CHAN, CHEN-WEI, et 詹鎮瑋. « Computational Study on the Structuresof (LiBH4)n，n=1~12 Clusters forHydrogen Storage ». Thesis, 2014. http://ndltd.ncl.edu.tw/handle/41085857259458507073.

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碩士
中原大學
化學研究所
102
In the present study, we used density functional theory with B3LYP/6-311g++(d, p) method to calculate the structures, frequencies and energies of (LiBH4)n, n=1~12 clusters which has been known as a candidate hydrogen storage materials. We found that each cluster has several isomers. In order to enhance the hydrogen storage capacity of (LiBH4)n clusters, we added excess electrons to(LiBH4)n clusters. Our calculations show that the hydrogen storage capacity as well as the weight percent is improved with the existence of excess electrons. In addition, we also analyzed the distribution of the charge.
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Livres sur le sujet "LiBH4"

1

Uaidh, Mícheál Mac. Slán Libh Boys. Lulu.com, 2019.

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Ar Aghaidh Libh ! : Scrúdú Cainte Agus Cluaistuisceana Na HArdteistiméireachta. Edco, The Educational Company of Ireland, 2008.

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Vilas-Boas, Gonçalo. Em torno de viagens e outras deslocações. Sous la direction de Fátima Outeirinho. FLUP-ILC, 2020. http://dx.doi.org/10.21747/9789895478439/lib24.

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Chapitres de livres sur le sujet "LiBH4"

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Price, T. E. C., D. M. Grant et G. S. Walker. « Synergistic Effect of LiBH4 + MgH2 as a Potential Reversible High Capacity Hydrogen Storage Material ». Dans Ceramic Transactions Series, 97–104. Hoboken, NJ, USA : John Wiley & Sons, Inc., 2008. http://dx.doi.org/10.1002/9780470483428.ch10.

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Laversenne, L. « Synthesis and crystal structure of alkali metal borohydrides LiBH4, NaBH4, KBH4, RbBH4 and CsBH4 ». Dans Hydrogen Storage Materials, 282–89. Berlin, Heidelberg : Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-662-54261-3_50.

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Holze, Rudolf. « Ionic conductance of LiBF4 ». Dans Electrochemistry, 1165. Berlin, Heidelberg : Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-49251-2_1049.

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Donoso, J. P., M. G. Cavalcante, W. Gorecki, C. Berthier et M. Armand. « NMR Study of the Polymer Solid Electrolyte PEO (LIBF4)x ». Dans 25th Congress Ampere on Magnetic Resonance and Related Phenomena, 331–32. Berlin, Heidelberg : Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-76072-3_171.

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Holze, Rudolf. « Ionic conductivities of binary mixture of LiBF4 and acetonitrile+methanol ». Dans Electrochemistry, 1603–6. Berlin, Heidelberg : Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-642-02723-9_1424.

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Holze, Rudolf. « Ionic conductivities of gelled and polymerized TMP+EC+DEC+LiBF4 ». Dans Electrochemistry, 2126. Berlin, Heidelberg : Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-642-02723-9_1723.

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Holze, Rudolf. « Ionic conductivities of binary mixture of LiBF4 and 1B3MIm-BF4+ EC ». Dans Electrochemistry, 1541. Berlin, Heidelberg : Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-642-02723-9_1388.

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Holze, Rudolf. « Ionic conductivities of binary mixture of LiBF4 and 1B3MIm-BF4+ PC ». Dans Electrochemistry, 1542. Berlin, Heidelberg : Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-642-02723-9_1389.

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Holze, Rudolf. « Ionic conductivities of binary mixture of LiBF4 and 1E3MIm-BF4+EC ». Dans Electrochemistry, 1543. Berlin, Heidelberg : Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-642-02723-9_1390.

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Holze, Rudolf. « Ionic conductivities of binary mixture of LiBF4 and 1E3MIm-BF4+PC ». Dans Electrochemistry, 1544. Berlin, Heidelberg : Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-642-02723-9_1391.

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Actes de conférences sur le sujet "LiBH4"

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Zamponi, Flavio, Johannes Stingl, Benjamin Freyer, Michael Woerner, Thomas Elsaesser et Andreas Borgschulte. « Femtosecond X-Ray Powder Diffraction on LiBH4 ». Dans International Conference on Ultrafast Structural Dynamics. Washington, D.C. : OSA, 2012. http://dx.doi.org/10.1364/icusd.2012.im2d.5.

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Zamponi, Flavio, Johannes Stingl, Benjamin Freyer, Michael Woerner, Thomas Elsaesser et Andreas Borgschulte. « LiBH4 Studied by Femtosecond X-Ray Powder Diffraction ». Dans Quantum Electronics and Laser Science Conference. Washington, D.C. : OSA, 2012. http://dx.doi.org/10.1364/qels.2012.qth4h.3.

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Niemann, Michael U., Sesha S. Srinivasan, Ashok Kumar, Elias K. Stefanakos, D. Yogi Goswami et Kimberly McGrath. « Processing Analysis of the Ternary LiNH2-MgH2-LiBH4 System for Hydrogen Storage ». Dans ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-11520.

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The ternary LiNH2-MgH2-LiBH4 hydrogen storage system has been extensively studied by adopting various processing reaction pathways. The stoichiometric ratio of LiNH2:MgH2:LiBH4 is kept constant with a 2:1:1 molar ratio. All samples are prepared using solid-state mechano-chemical synthesis with a constant rotational speed, but with varying milling duration. All samples are intimate mixtures of Li-B-N-H and MgH2, with varying particle sizes. It is found that the samples with MgH2 particle sizes of approximately 10nm exhibit lower initial hydrogen release at a temperature of 150°C. The as-synthesized hydrides exhibit two main hydrogen release temperatures, one around 160°C and the other around 300°C. The main hydrogen release temperature is reduced from 310°C to 270°C, while hydrogen is first reversibly released at temperatures as low as 150°C with a total hydrogen capacity of 6 wt.%.
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Benzidi, H., O. Mounkachi, M. Lakhal, A. Benyoussef et A. El Kenz. « Compression effect on electronic properties and hydrogen desroption of LiBH4 : First principal study ». Dans 2016 International Renewable and Sustainable Energy Conference (IRSEC). IEEE, 2016. http://dx.doi.org/10.1109/irsec.2016.7984054.

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Kretzschmar, H. J., I. Stoecker, I. Jaehne, S. Herrmann et M. Kunick. « Property Libraries for Working Fluids for Calculating Heat Cycles, Turbines, Heat Pumps, and Refrigeration Processes ». Dans ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-42033.

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The program libraries developed for calculating the thermophysical properties of working fluids can be used by engineers who routinely calculate heat cycles, steam or gas turbines, boilers, heat pumps, or other thermal or refrigeration processes. Thermodynamic properties, transport properties, derivatives, and inverse functions can be calculated. Today gas turbines are being developed for higher and higher temperatures and pressures. However, the calculation of the combustion gas as an ideal gas mixture will be inaccurate at high pressures. For this reason, a property library has been developed for humid combustion gases calculated as an ideal mixture of real fluids. The advanced adiabatic compressed air energy storage technology requires very accurate algorithms for the thermodynamic and transport properties of humid air at low temperatures and high pressures. At these parameters, humid air cannot be calculated as an ideal gas mixture. For this reason, a property library with real gas algorithms has been developed. The following properly libraries will be presented: LibHuGas for humid combustion gas mixtures at high pressures calculated as an ideal mixture of real fluids. The library also includes mixtures of steam and carbon dioxide. The dissociation at high temperatures, the poynting effect, and the condensation of water are considered as well. LibHuAir for humid air at high pressures calculated as an ideal mixture of the real fluids dry air, steam and water or ice. The dissociation at high temperatures and the poynting effect are taken into consideration. LibAmWa for mixtures of ammonia and water in the Kalina cycle and in absorption refrigeration processes. LibWaLi for mixtures of water and lithium bromide in absorption refrigeration processes. LibldGas for combustion gas mixtures calculated as an ideal mixture of ideal gases using the VDI-Guideline 4670. LibIdAir for humid air calculated as an ideal mixture of the ideal gases dry air and steam using the VDI-Guideline 4670. LibIdGasMix for 25 ideal gases and their mixtures. LibIF97 for water and steam calculated from the Industrial Formulation IAPWS-IF97 and all new backward equations of the four supplementary releases adopted by IAPWS between 2001 and 2005. LibCO2 for carbon dioxide. LibNH3 for ammonia. LibR134a for the refrigerant R134a. LibPropane for propane. LibButane_Iso and LibButane_n for Iso- and n-butane. LibHe for helium. LibH2 for hydrogen. The libraries contain the most accurate algorithms for thermodynamic and transport properties. The following software solutions will also be presented: - DLLs for Windows® applications. - Add-In FluidEXL for Excel®. - Add-On FluidLAB for MATLAB®. - Add-On FluidMAT for Mathcad®. - Properly libraries for HP, TI, and Casio pocket calculators. Student versions of all programs are available.
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Sangeetha, M., A. Mallikarjun, M. Jaipal Reddy et J. Siva Kumar. « SEM, XRD and electrical conductivity studies of PVDF-HFP-LiBF4 –EC plasticized gel polymer electrolyte ». Dans INTERNATIONAL CONFERENCE ON FUNCTIONAL MATERIALS, CHARACTERIZATION, SOLID STATE PHYSICS, POWER, THERMAL AND COMBUSTION ENERGY : FCSPTC-2017. Author(s), 2017. http://dx.doi.org/10.1063/1.4990217.

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Mariam, Siti Nor, Bohari M. Yamin et Azizan Ahmad. « Synthesis of tetraaza bromide macrocyclic and studies of its effect on poly(methyl methacrylate) grafted natural rubber (MG49) - lithium tertrafluoroborate (LiBF4) films ». Dans THE 2013 UKM FST POSTGRADUATE COLLOQUIUM : Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2013 Postgraduate Colloquium. AIP Publishing LLC, 2013. http://dx.doi.org/10.1063/1.4858774.

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