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题名: Improvement on Hydrogen Desorption Performance of Calcium Borohydride Diammoniate Doped with Transition Metal Chlorides
作者: Chu, Hailiang1, 2, 3;  Qiu, Shujun1, 2;  Zou, Yongjin1, 2;  Xiang, Cuili1, 2;  Zhang, Huanzhi1, 2;  Xu, Fen1, 2;  Sun, Lixian1, 2;  Zhou, Huaiying1, 2
刊名: JOURNAL OF PHYSICAL CHEMISTRY C
发表日期: 2015-01-15
DOI: 10.1021/jp510248m
卷: 119, 期:2, 页:913-918
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: Calcium borohydride diammoniate with a molecular formula of Ca(BH4)(2).2NH(3) is a novel complex hydride for hydrogen storage. However, it suffers from high temperature and sluggish kinetics for hydrogen desorption. In this work, the temperature and kinetics for hydrogen desorption of calcium borohydride diammoniate were effectively improved through doping transition metal chlorides (such as CoCl2, NiCl2, and FeCl3) in a closed vessel. Three additives could effectively decrease the temperature for hydrogen desorption of Ca(BH4)(2).2NH3. Among them, CoCl2-doped Ca(BH4)(2).2NH3 could desorb hydrogen even at a low temperature of 170 degrees C, and at 200 degrees C, 7.6 wt % hydrogen with high purity is released, which shows superior performance for hydrogen desorption than that of pristine Ca(BH4)(2).2NH(3.) For CoCl2-doped Ca(BH4)(2).2NH(3), X-ray absorption fine structure (XAFS) revealed that the improvements could be ascribed to the catalytic function of well-dispersed cobalt particles, which results in a much lower activation energy (86.1 kJ/mol) for hydrogen desorption of calcium borohydride diammoniate.
关键词[WOS]: STORAGE PROPERTIES ;  AMMONIA BORANE ;  COBALT ;  HYDROLYSIS ;  CA(BH4)(2) ;  CATALYSTS ;  NABH4 ;  REVERSIBILITY ;  GENERATION ;  SYSTEM
语种: 英语
WOS记录号: WOS:000348094000005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146012
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Guilin Univ Elect Technol, Sch Mat Sci & Engn, Guilin 541004, Peoples R China
2.Guilin Univ Elect Technol, Guangxi Key Lab Informat Mat, Guilin 541004, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Chu, Hailiang,Qiu, Shujun,Zou, Yongjin,et al. Improvement on Hydrogen Desorption Performance of Calcium Borohydride Diammoniate Doped with Transition Metal Chlorides[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2015,119(2):913-918.
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