| 合金元素Cr对LaNi5基Ni/MH电极性能的影响 |
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| 引用本文： | 黄津梨,吕俊霞,黄伟东,庄应烘,邓海霞. 合金元素Cr对LaNi5基Ni/MH电极性能的影响[J]. 广西师范学院学报(自然科学版), 2006, 23(1): 31-34 |
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| 作者姓名： | 黄津梨 吕俊霞 黄伟东 庄应烘 邓海霞 |
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| 作者单位： | 广西师范学院,物理与电子信息科学系,广西,南宁,530001;广西大学,有色金属材料及其加工新技术教育部重点实验室,广西,南宁,530004;北京石油化工学院,机械工程学院,北京,102617;北京石油化工学院,机械工程学院,北京,102617 |
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| 基金项目： | 中国科学院资助项目 , 广西新世纪十百千人才工程基金 |
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| 摘 要： | 测定了LaNi5基储氢合金的相成分,晶体结构和电化学性能.电化学测试是以合金粉制成负极,以烧结Ni(OH)2为正极,以6mol/L KOH溶液为电解液,制成开口式MH-Ni二次电池,在室温下测定的.结果显示,Cr部分替代LaNi4.7Si0.3合金中的Si形成的LaNi4.7Si0.3-xCrx合金均为CaCu5结构,未改变原合金的晶体结构.其中LaNi4.7Si0.22Cr0.08合金具有较高的放电容量,较好的放电平台和较快的活化速度.小电流放电性能比大电流放电好.
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| 关 键 词： | LaNi5基合金 Ni/MH电池 电化学性能 |
| 文章编号： | 1002-8743（2006）01-0031-04 |
| 收稿时间： | 2005-12-10 |
| 修稿时间： | 2005-12-10 |
Influence of Alloying Element Cr on Ni/MH Electrode Properties of LaNi5-based Alloy |
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| HUANG Jin-li,LU Jun-xia,HUANG wei-dong,ZHUANG Ying-hong,DENG Hai-xia. Influence of Alloying Element Cr on Ni/MH Electrode Properties of LaNi5-based Alloy[J]. Journal of Guangxi Teachers Education University:Natural Science Edition, 2006, 23(1): 31-34 |
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| Authors: | HUANG Jin-li LU Jun-xia HUANG wei-dong ZHUANG Ying-hong DENG Hai-xia |
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| Affiliation: | 1. Department of Physics and Electronic Information Science, Guangxi Terchers Education University, Nanning 530001, China; 2. Key Laboratory of Nonferrous Metal Materials and New Processing Technology, Guangxi University, Ministry of Education,. Nanning 530004, China; 3. School of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China |
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| Abstract: | The phase composition,crystal and electrochemical properties of LaNi_5-based alloy were investigated.The electrochemical testing was examined in a half-cell with 6mol/L KOH solution at room temperature,negative electrode was prepared by alloy powder,plastic-bonded Ni(OH)_2 was used as the positive electrode.The results show that the structure of the alloys,by partial substitution of Cr for Si in LaNi_(4.7)Si_(0.3),is CaCu_5-type,the addition did not cause the change of the LaNi_(4.7)Si_(0.3-x)Cr_x alloys structure.The LaNi_(4.7)Si_(0.22)Cr_(0.08) alloy has higher discharge capacity,better discharge plateau and faster activation rate.The properties of discharge capacity at little current discharge are better than that at big current discharge. |
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| Keywords: | LaNi_5-based alloy Nickel-metal hydride battery electrochemical property |
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