The catalytic effect of additive Nb2O5 on the reversible hydrogen storage performances of LiBH4-MgH2 composite
文献类型：期刊论文
| 作者 | Fan, Mei-Qiang1,2; Sun, Li-Xian1; Zhang, Yao1; Xu, Fen1; Zhang, Jian1,2; Chu, Hai-liang1,2 |
| 刊名 | international journal of hydrogen energy
 |
| 出版日期 | 2008 |
| 卷号 | 33期号:1页码:74-80 |
| 关键词 | lithium borohydride hydrogen storage material magnesium hydride niobium oxide |
| 产权排序 | 1;1 |
| 通讯作者 | 孙立贤 ; 张耀 ; 徐芬 |
| 英文摘要 | libh4-mgh2 composite exhibits excellent reversible hydrogen capacity, but it still presents high decomposition temperature over 350 degrees c and sluggish kinetics. for the purpose of optimizing its reaction performance, nb2o5 was doped into this composite as a catalyst to form a more destabilized and reversible composite system. it possesses a maximum capacity of approximately 6-8 wt% hydrogen releasing below 400 degrees c and could be hydrogenated to 5-6 wt% hydrogen capacity at 400 degrees c under 1.9 mpa. xrd and sem analysis revealed that nbh2, formed and highly dispersed in the composite, played a key role in changing the original path and resulted in the formation of an intermediate compound (mgb2) in the milling process. the hydrogen storage capacity of the libh4-mgh2 (mass ratio, 1 : 2) + 16wt% nb2o5 composite decreased gradually during the dehydrogenation/hydrogenation cycles and still maintained 5.16 wt% in the third dehydrogenation process. the activation energies ea of libh4-mgh2 (mass ratio, 1:2) with 16 wt% nb2o5 and without nb2o5 were estimated to be 139.96 and 156.75 kj mol(-1) by kissinger method. it indicates that the additive nb2o5 can decrease the activation energy of libh4-mgh2 composite. (c) 2007 international association for hydrogen energy. published by elsevier ltd. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, physical ; electrochemistry ; energy & fuels |
| 研究领域[WOS] | chemistry ; electrochemistry ; energy & fuels |
| 关键词[WOS] | sorption ; borohydride ; kinetics ; systems ; alloys ; mgh2 ; mn ; fe |
| 收录类别 | SCI |
| 原文出处 | true |
| 语种 | 英语 |
| WOS记录号 | WOS:000253564000010 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/99975]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, Mat & Thermochem Lab, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fan, Mei-Qiang,Sun, Li-Xian,Zhang, Yao,et al. The catalytic effect of additive Nb2O5 on the reversible hydrogen storage performances of LiBH4-MgH2 composite[J]. international journal of hydrogen energy,2008,33(1):74-80. |
| APA | Fan, Mei-Qiang,Sun, Li-Xian,Zhang, Yao,Xu, Fen,Zhang, Jian,&Chu, Hai-liang.(2008).The catalytic effect of additive Nb2O5 on the reversible hydrogen storage performances of LiBH4-MgH2 composite.international journal of hydrogen energy,33(1),74-80. |
| MLA | Fan, Mei-Qiang,et al."The catalytic effect of additive Nb2O5 on the reversible hydrogen storage performances of LiBH4-MgH2 composite".international journal of hydrogen energy 33.1(2008):74-80. |
入库方式： OAI收割
来源：大连化学物理研究所
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