标题
作者
作者:Ouyang, LZ (Ouyang, Liuzhang)[1 ]; Yang, TH (Yang, Tonghan)[1 ]; Zhu, M (Zhu, Min)[1 ]; Min, D (Min, De)[2 ]; Luo, TZ (Luo, Tongzhao)[2 ]; Wang, H (Wang, Hui)[1 ]; Xiao, FM (Xiao, Fangming)[3 ]; Tang, RH (Tang, Renheng)[3 ]
期刊信息
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文献类型:Article
摘要
A Pr, Nd and Co-free A(2)B(7)-type alloy, La13.9Sm24.7Mg1.5Ni58Al1.7Zr0.14Ag0.07, was prepared for use as a nickel-metal hydride battery electrode. The structural characteristics and hydrogen-storage and electrochemical properties of La13.9Sm24.7Mg1.5Ni58Al1.7Zr0.14Ag0.07 were investigated in detail. The La13.9Sm24.7Mg1.5Ni58Al1.7Zr0.14Ag0.07 alloy consisted of two phases (La2Ni7 and LaNi5) and showed excellent hydrogen-storage and electrochemical performance. The Delta H and Delta S values of this alloy were 24.4 kJ/mol H-2 and 66.2 J/(mol.K), respectively. The high rate dischargeabilities were 97%, 86% and 78%, respectively, at discharge current densities of 330, 970 and 1600 mAh/g. The hydrogen desorption pressure of the La13.9Sm24.7Mg1.5Ni58Al1.7Zr0.14Ag0.07 alloy was 0.005 MPa at 233 K, which is favour for the low temperature discharging. The retention rate maintained a high value of 86.2% after 200 cycles at 1 C. (C) 2017 Elsevier B.V. All rights reserved.
关键词
作者关键词:Nickel-metal hydride battery; Hydrogen storage; Electrochemical properties; Cycling
作者信息
通讯作者地址:Zhu, M (通讯作者)
 | South China Univ Technol, Key Lab Adv Energy Storage Mat Guangdong Prov, Sch Mat Sci & Engn, Guangzhou 510641, Guangdong, Peoples R China. |
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电子邮件地址:memzhu@scut.edu.cn
出版商
类别分类
研究方向:Chemistry; Materials Science; Metallurgy & Metallurgical Engineering
Web of Science 类别:Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering