Structure and electrochemical properties of composite electrodes synthesized by mechanical milling Ni-free TiMn2-based alloy with La-based alloys
文献类型：期刊论文
| 作者 | Chu, Hailiang; Zhang, Yao; Sun, Lixian; Qiu, Shujun; Qi, Yanni; Xu, Fen; Yuan, Huatang |
| 刊名 | journal of alloys and compounds
 |
| 出版日期 | 2007-10-31 |
| 卷号 | 446页码:614-619 |
| 关键词 | hydrogen storage alloy electrodes AB(2)-type Laves phase alloy surface modification electrochemical properties mechanical milling |
| 产权排序 | 1;1 |
| 通讯作者 | 张耀 ; 孙立贤 |
| 英文摘要 | in the present study, hydrogen storage composite electrodes were prepared by mechanical milling the powder mixtures of ni-free laves phase alloy ti0.9zr0.2mn1.5cr0.3v0.3 (ab(2)) with lani3.8mn0.3al0.4co0.5 (ab(5)) and la0.7mg0.25zr0.05ni2.975co0.525 (ab(3.5)), respectively. x-ray diffraction (xrd) measurements found that the basic phase structure (hexagonal c14) was still maintained in timn2-based alloy after short-time mechanical milling with additional la-based alloys. the fine particles of la-based alloy were found dispersing over the bulk particle of timn2-based alloy by observations of scanning electron microscopy (sem) with energy dispersive spectrometer (eds). the electrochemical studies showed that the additional la-based alloys greatly improved the discharge capacity of the composite electrode. the maximum discharge capacity reached 310.4 mah/g and 314.0 mah/g for ab(2)-10 wt.% ab(5) and ab(2)-10 wt.% ab(3.5) electrodes, respectively, which was much higher than the maximum 48.6 mah/g of original ti0.9zr0.2mn1.5cr0.3v0.3 alloy electrode. electrochemical impedance spectroscopy (eis) and cyclic voltarnmetry (cv) measurements suggests that ab(3.5)-type alloy as a surface- modifier is beneficial to the decrease of the charge-transfer reaction resistance. the mechanical milling with ab(5)-type alloy was found improving the hydrogen diffusion in the bulk of the alloy from the results of anodic polarization measurement. (c) 2007 elsevier b.v. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, physical ; materials science, multidisciplinary ; metallurgy & metallurgical engineering |
| 研究领域[WOS] | chemistry ; materials science ; metallurgy & metallurgical engineering |
| 关键词[WOS] | metal hydride electrodes ; laves phase alloys ; hydrogen storage ; performance ; powder |
| 收录类别 | ISTP ; SCI |
| 原文出处 | true |
| 语种 | 英语 |
| WOS记录号 | WOS:000250822900132 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/99023]  |
| 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.Nankai Univ, Inst New Energy Mat Chem, Tianjin 300071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chu, Hailiang,Zhang, Yao,Sun, Lixian,et al. Structure and electrochemical properties of composite electrodes synthesized by mechanical milling Ni-free TiMn2-based alloy with La-based alloys[J]. journal of alloys and compounds,2007,446:614-619. |
| APA | Chu, Hailiang.,Zhang, Yao.,Sun, Lixian.,Qiu, Shujun.,Qi, Yanni.,...&Yuan, Huatang.(2007).Structure and electrochemical properties of composite electrodes synthesized by mechanical milling Ni-free TiMn2-based alloy with La-based alloys.journal of alloys and compounds,446,614-619. |
| MLA | Chu, Hailiang,et al."Structure and electrochemical properties of composite electrodes synthesized by mechanical milling Ni-free TiMn2-based alloy with La-based alloys".journal of alloys and compounds 446(2007):614-619. |
入库方式： OAI收割
来源：大连化学物理研究所
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