Effect of Y substitution on the high rate dischargeability of AB(4.6) alloys as an electrode material for nickel metal hydride batteries
作者:Tan, C (Tan, Cheng)[ 1,2 ] ; Ouyang, LZ (Ouyang, Liuzhang)[ 1,2,4,5 ] ; Wang, H (Wang, Hui)[ 1,2 ] ; Min, D (Min, De)[ 3 ] ; Liao, CH (Liao, Canhui)[ 3 ] ; Xiao, FM (Xiao, Fangming)[ 6 ] ; Tang, RH (Tang, Renheng)[ 6 ] ; Zhu, M (Zhu, Min)[ 1,2 ]
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JOURNAL OF ALLOYS AND COMPOUNDS
卷: 849
文献号: 156641
DOI: 10.1016/j.jallcom.2020.156641
出版年: DEC 30 2020
文献类型:Article
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摘要
AB(4.6) alloys exhibit excellent high rate dischargeability (HRD) performance but the quick capacity degradation and low discharge capacity restrict application of nickel metal hydride batteries. This study investigated the effect of substituting La with Y on the multiphase structures and overall electrochemical characteristics of the La0.90-xCe0.08YxZr0.02Ni3.91Co0.14Mn0.25Al0.30 (x = 0, 0.3, 0.5, and 0.7) alloys. The results showed that Y tended to form stable [A(2)B(4)] subunit rather than [AB(5)] subunit, thus the Ce2Ni7-type phase abundance increased from 16.00 wt% to 26.30 wt%, and improved the maximum discharge capacity and hydrogen diffusion. The decrease of icorr and particle size demonstrated that the addition of Y enhanced anti-corrosion capability but degraded anti-pulverization capability, where small particles obtained via pulverization were very sensitive to corrosion, thus leading to degradation in discharge capacity. The La0.6Ce0.08Y0.3Zr0.02Ni3.91Co0.14Mn0.25Al0.30 alloy exhibited excellent electrochemical properties, with maximum discharge capacity of 350.4 mAh g(-1), cycle stability of 80.15% after 100 cycles and HRD of 73.56% (3000 mA g(-1)). (C) 2020 Elsevier B.V. All rights reserved.
关键词
作者关键词:Nickel metal hydride battery; Sub-stoichiometric AB(4.6)-type alloy; Electrochemical properties; Yttrium effect
KeyWords Plus:HYDROGEN STORAGE ALLOYS; ELECTROCHEMICAL PROPERTIES; STRUCTURAL-PROPERTIES; PHASE-TRANSFORMATION; LOW-TEMPERATURE; NI; LA; PERFORMANCE; BEHAVIOR; ND
作者信息
通讯作者地址:
South China University of Technology South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China.
South China University of Technology South China Univ Technol, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510641, Peoples R China.
Guangdong Gen Res Inst Ind Technol, Dept Rare Earth Met, Guangzhou 510650, Peoples R China.
通讯作者地址: Ouyang, LZ (通讯作者)
显示更多 South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China.
通讯作者地址: Ouyang, LZ (通讯作者)
显示更多 South China Univ Technol, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510641, Peoples R China.
通讯作者地址: Tang, RH (通讯作者)
Guangdong Gen Res Inst Ind Technol, Dept Rare Earth Met, Guangzhou 510650, Peoples R China.
地址:
显示更多 [ 1 ] South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China
显示更多 [ 2 ] South China Univ Technol, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510641, Peoples R China
[ 3 ] Sihui City Double Win Ind CO LTD, Zhaoqing, Peoples R China
[ 4 ] China Australia Joint Lab Energy & Environm Mat, Guangzhou 510641, Peoples R China
[ 5 ] Key Lab Fuel Cell Technol Guangdong Prov, Guangzhou 510641, Peoples R China
[ 6 ] Guangdong Gen Res Inst Ind Technol, Dept Rare Earth Met, Guangzhou 510650, Peoples R China
电子邮件地址:meouyang@scut.edu.cn; tangrenhgz@163.com
基金资助致谢
基金资助机构显示详情 授权号
National Key R&D Program of China
2019YFB1505101
2018YFB1502101
National Natural Science Foundation of China (NSFC)
NSFC51621001
National Natural Science Foundation of China (NSFC)
51771075
National Natural Science Foundation of Guangdong Province
2016A030312011
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出版商
ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND
期刊信息
Impact Factor (影响因子): Journal Citation Reports
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