Electrochemical hydrogen storage properties of La0.7Mg0.3Ni3.5-Ti0.17Zr0.08V0.35Cr0.1Ni0.3 composites
文献类型：期刊论文
| 作者 | Chu, Hai-Liang1,2; Qiu, Shu-Jun1,2; Sun, Li-Xian1; Zhang, Yao1; Xu, Fen1; Zhu, Min3; Hu, Wang-Yu4 |
| 刊名 | international journal of hydrogen energy
 |
| 出版日期 | 2008 |
| 卷号 | 33期号:2页码:755-761 |
| 关键词 | composite electrode material hydrogen storage electrochemical reactions cyclic stability electrochemical kinetics |
| 英文摘要 | for further improving the electrochemical properties of nonstoichiometric ab(3)-type la0.7mg0.3ni3.5 alloy as negative electrode of ni-mh battery, its related composites la0.7mg0.3ni3.5-xwt% ti0.17zr0.08v0.35cr0.1ni0.3 (x = 5, 10, 25, 40) are prepared by ball milling method. it is found that all these composites are mainly composed of (lamg)ni-3 and lani5 phases according to xrd patterns. when x <= 25, the v-based solid solution bcc phase and c14 laves phase in ti0.17zr0.08v0.35cr0.1ni0.3 alloy are not detectable. as x further increases to 40wt%, however, these two phases appear in xrd pattern. electrochemical studies show that the maximum discharge capacity of these electrodes decreases slightly from 348.5 mah/g (x = 5) to 335.2 mah/g (x = 40), while the cyclic capacity retention rate of composite electrodes is significantly improved from 29.7% (x = 5) to 63.0% (x = 40) after 70 charge-discharge cycles. this improvement of cyclic life can be ascribed to the enhanced anti-corrosion performance of composite electrode in alkaline solution. moreover, the electrochemical kinetics properties, including the charge-transfer resistance r-ct, the polarization resistance r-p, the exchange cur-rent density i-0, the limiting current density i-l and the hydrogen diffusion coefficient d, of the composite electrodes were retarded first with x increasing from 5 to 25 and then improved when x reaches to 40. (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] | metal hydride electrodes ; solid-solution alloys ; ni ; ti ; substitution ; la ; microstructure ; capacity ; mn ; al |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000253791300033 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/140831]  |
| 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.S China Univ Technol, Sch Mech Engn, Guangzhou 510641, Peoples R China 4.Hunan Univ, Dept Appl Phys, Changsha 410082, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chu, Hai-Liang,Qiu, Shu-Jun,Sun, Li-Xian,et al. Electrochemical hydrogen storage properties of La0.7Mg0.3Ni3.5-Ti0.17Zr0.08V0.35Cr0.1Ni0.3 composites[J]. international journal of hydrogen energy,2008,33(2):755-761. |
| APA | Chu, Hai-Liang.,Qiu, Shu-Jun.,Sun, Li-Xian.,Zhang, Yao.,Xu, Fen.,...&Hu, Wang-Yu.(2008).Electrochemical hydrogen storage properties of La0.7Mg0.3Ni3.5-Ti0.17Zr0.08V0.35Cr0.1Ni0.3 composites.international journal of hydrogen energy,33(2),755-761. |
| MLA | Chu, Hai-Liang,et al."Electrochemical hydrogen storage properties of La0.7Mg0.3Ni3.5-Ti0.17Zr0.08V0.35Cr0.1Ni0.3 composites".international journal of hydrogen energy 33.2(2008):755-761. |
入库方式： OAI收割
来源：大连化学物理研究所
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