Effect of mn content on the structure and electrochemical characteristics of la0.7mg0.3ni2.975-xco0.525mnx (x=0-0.4) hydrogen storage alloys
文献类型：期刊论文
| 作者 | Zhang, XB; Sun, DZ; Yin, WY; Chai, YJ; Zhao, MS |
| 刊名 | Electrochimica acta
 |
| 出版日期 | 2005-05-05 |
| 卷号 | 50期号:14页码:2911-2918 |
| 关键词 | Structure characteristics High rate chargeability High rate dischargeability Low temperature dischargeability Exchange current density Hydrogen diffusion coefficient |
| ISSN号 | 0013-4686 |
| DOI | 10.1016/j.electacta.2004.11.039 |
| 通讯作者 | Zhao, ms() |
| 英文摘要 | The effect of mn content on the crystal structure and electrochemical characteristics of la0.7mg0.3ni2.975-xco0.525mnx (x = 0, 0.1, 0.2, 0.3, 0.4) alloys has been studied systematically. the results of the rietveld analyses show that all these alloys mainly consist of two phases: the la(la,mg)(2)ni-9 phase with the rhombohedral puni3-type structure and the lani5 phase with the hexagonal cacu5-type structure. the pressure-composition isotherms shows that the partial substitution of mn for ni results in lower desorption plateau pressure and steeper pressure plateau of the alloy electrodes. for a mn content of x = 0.3, the electrochemical performances, including specific discharge capacity, high rate chargeability (hrc) and high rate dischargeability (hrd), of the alloy are preferable. moreover, the data of the polarization resistance r-p and the exchange current density i-0 of the alloy electrodes is consistent with the results of hrc and hrd. the hydrogen diffusion coefficient d increases with increasing mn content, and thereafter increases the low temperature dischargeability (ltd) of the alloy electrodes. © 2004 elsevier ltd. all rights reserved. |
| WOS关键词 | NEGATIVE ELECTRODE MATERIAL ; HYDRIDE ELECTRODES ; METAL ; NI ; BATTERY ; CAPACITY ; LAMG2NI9 ; SUBSTITUTION ; TEMPERATURE |
| WOS研究方向 | Electrochemistry |
| WOS类目 | Electrochemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000228961200019 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2378019 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Zhao, MS |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, Grad Sch, Key Lab Rare Earth Chem & Phys, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Changchun Inst Appl Chem, Grad Sch, State Key Lab Electroanalyt Chem, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, XB,Sun, DZ,Yin, WY,et al. Effect of mn content on the structure and electrochemical characteristics of la0.7mg0.3ni2.975-xco0.525mnx (x=0-0.4) hydrogen storage alloys[J]. Electrochimica acta,2005,50(14):2911-2918. |
| APA | Zhang, XB,Sun, DZ,Yin, WY,Chai, YJ,&Zhao, MS.(2005).Effect of mn content on the structure and electrochemical characteristics of la0.7mg0.3ni2.975-xco0.525mnx (x=0-0.4) hydrogen storage alloys.Electrochimica acta,50(14),2911-2918. |
| MLA | Zhang, XB,et al."Effect of mn content on the structure and electrochemical characteristics of la0.7mg0.3ni2.975-xco0.525mnx (x=0-0.4) hydrogen storage alloys".Electrochimica acta 50.14(2005):2911-2918. |
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来源：中国科学院大学
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