The electrochemical performances of Ti-V-based hydrogen storage composite electrodes prepared by ball milling method
文献类型：期刊论文
| 作者 | Qiu, Shu-Jun1,2; Chu, Hai-Liang1,2; Zhang, Yao1; Sun, Li-Xian1; Xu, Fen1,4; Cao, Zhong3 |
| 刊名 | international journal of hydrogen energy
 |
| 出版日期 | 2008-12-01 |
| 卷号 | 33期号:24页码:7471-7478 |
| 关键词 | Hydrogen storage alloy Ti-V-based alloy Composite Activation property Electrochemical kinetics |
| 英文摘要 | in order to overcome the inherent disadvantages of ti-v-based hydrogen storage alloys, such as poor activation behavior and low high-rate dischargeability, the novel composites ti0.17zr0.08v0.35cr0.1ni0.3-x wt.% la0.7mg0.3ni2.75co0.75 (x = 0, 5, 10 and 20) were successfully synthesized by ball milling method in the present study. and the structure and overall electrochemical properties of as-prepared composites are investigated systemically. the electrochemical studies show that the maximum discharge capacity of the composite electrodes displays no variation with the increase of la0.7mg0.3ni2.75co0.75 content, whereas the high-rate dischargeability (hrd) and the activation behavior are distinctly improved with increasing x. the electrochemical hydrogen kinetics of composite electrodes is also studied by means of electrochemical impedance spectroscopy (eis), linear polarization (lp), anodic polarization (ap) and potential-step measurements. it is found that the charge-transfer reaction resistance r-ct is decreased with increasing the amount of la0.7mg0.3ni2.75co0.75 while exchange current density i-0, limiting current density i-l and hydrogen diffusion coefficient d are all increased with increasing the amount of la0.7mg0.3ni2.75co0.75. these results suggest that the formation of composite with la0.7mg0.3ni2.75co0.75 alloy is a promising strategy for improving the hrd, activation behavior and electrochemical kinetics of ti-v-based alloy electrodes. (c) 2008 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] | metal hydride electrodes ; alkaline aqueous-solution ; solid-solution alloys ; negative electrodes ; capacity ; lamg2ni9 ; phase ; la ; ni ; microstructure |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000262077900020 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/141185]  |
| 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 100049, Peoples R China 3.Changsha Univ Sci & Technol, Dept Environm Chem & Engn, Changsha 410076, Hunan, Peoples R China 4.Liaoning Normal Univ, Fac Chem & Chem Engn, Dalian 116029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qiu, Shu-Jun,Chu, Hai-Liang,Zhang, Yao,et al. The electrochemical performances of Ti-V-based hydrogen storage composite electrodes prepared by ball milling method[J]. international journal of hydrogen energy,2008,33(24):7471-7478. |
| APA | Qiu, Shu-Jun,Chu, Hai-Liang,Zhang, Yao,Sun, Li-Xian,Xu, Fen,&Cao, Zhong.(2008).The electrochemical performances of Ti-V-based hydrogen storage composite electrodes prepared by ball milling method.international journal of hydrogen energy,33(24),7471-7478. |
| MLA | Qiu, Shu-Jun,et al."The electrochemical performances of Ti-V-based hydrogen storage composite electrodes prepared by ball milling method".international journal of hydrogen energy 33.24(2008):7471-7478. |
入库方式： OAI收割
来源：大连化学物理研究所
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