Exploring Ternary and Quaternary Mixtures in the LiBH4-NaBH4-KBH4-Mg(BH4)2-Ca(BH4)2 System

被引：15

作者：

Dematteis, Erika M. ^{[1
,2
,3
]}

Pistidda, Claudio ^{[3
]}

Dornheim, Martin ^{[3
]}

Baricco, Marcello ^{[1
,2
]}

机构：

[1] Univ Turin, Dept Chem, Via Pietro Giuria, I-10125 Turin, Italy

[2] Univ Turin, Interdept Ctr Nanostruct Interfaces & Surfaces NI, Via Pietro Giuria, I-10125 Turin, Italy

[3] Helmholtz Zentrum Geesthacht, Nanotechnol Dept, Max Planck Str 1, D-21502 Geesthacht, Germany

来源：

CHEMPHYSCHEM | 2019年 / 20卷 / 10期

关键词：

borohydrides; complex hydrides; hydrogen storage; quaternary mixtures; ternary mixtures; HYDROGEN STORAGE PROPERTIES; EUTECTIC LIBH4-MG(BH4)(2); METAL BOROHYDRIDES; LIBH4-CA(BH4)(2); DECOMPOSITION; REVERSIBILITY; DESORPTION; BEHAVIOR; MG; COMPOSITES;

D O I：

10.1002/cphc.201801130

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Binary combinations of borohydrides have been extensivly investigated evidencing the formation of eutectics, bimetallic compounds or solid solutions. In this paper, the investigation has been extended to ternary and quaternary systems in the LiBH4-NaBH4-KBH4-Mg(BH4)(2)-Ca(BH4)(2) system. Possible interactions among borohydrides in equimolar composition has been explored by mechanochemical treatment. The obtained phases were analysed by X-ray diffraction and the thermal behaviour of the mixtures were analysed by HP-DSC and DTA, defining temperature of transitions and decomposition reactions. The release of hydrogen was detected by MS, showing the role of the presence of solid solutions and multi-cation compounds on the hydrogen desorption reactions. The presence of LiBH4 generally promotes the release of H-2 at about 200 degrees C, while KCa(BH4)(3) promotes the release in a single-step reaction at higher temperatures.

引用

页码：1348 / 1359

页数：12

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