A Nb-doped metal hydride electrode with overcharge resistance and wide temperature performance for aqueous rechargeable batteries
作者:
Tan, C (Tan, Cheng) [1] ; Ouyang, LZ (Ouyang, Liuzhang) [1] , [3] , [4] ; Min, D (Min, De) [2] ; Liao, CH (Liao, Canhui) [2] ; Zhu, M (Zhu, Min) [1]
SCRIPTA MATERIALIA
卷218
文献号114827
DOI10.1016/j.scriptamat.2022.114827
出版时间SEP 2022
已索引2022-06-22
文献类型Article
摘要
Metal hydride electrodes have been widely used for aqueous rechargeable batteries with good wide temperature performance compared to lithium-ion batteries. For the first time, the design and application of Nb-doped metal hydride electrode with excellent overcharge resistance in this study for La0.46Ce0.42xPr0.03Nd0.08Zr0.02NbxNi4.41Mn0.36Al0.28 (x = 0, 0.05 or 0.1). The ratio of capacity retention after the 100th cycle for charging 420 and 360 mAh g-1 increases from 86.99% (x = 0) to 99.93% (x = 0.1) at 25 degrees C, and from 83.95% (x = 0) to 99.28% for (x = 0.1) at 50 degrees C. Furthermore, the capacity of simulated wide temperature and overcharge experiment at -20 degrees C increases from 86.3 mAh g-1 (x = 0) to 217.8 mAh g-1 (x = 0.1) after the 100th cycle at 50 degrees C, due to the increase of overcharge resistance. This material makes it a promising candidate as electrode material for wide temperature applications.
关键词
作者关键词Metal hydride electrodeOvercharge resistance performanceWide temperatureniobium (Nb) doping
Keywords PlusHYDROGEN STORAGE ALLOYSLITHIUM-ION BATTERIESLACATHODESSAFETYCELLSWATER
作者信息
通讯作者地址
Ouyang, Liuzhang
(通讯作者)
South China Univ Technol, Sch Mat Sci & Engn, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510641, Peoples R China
地址
1 South China Univ Technol, Sch Mat Sci & Engn, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510641, Peoples R China
2 Sihui City Double Win Ind Co LTD, Sihui, Peoples R China
3 China Australia Joint Lab Energy & Environm Mat, Guangzhou 510641, Peoples R China
4 Key Lab Fuel Cell Technol Guangdong Prov, Guangzhou 510641, Peoples R China
电子邮件地址meouyang@scut.edu.cn
类别/分类
研究方向Science & Technology - Other TopicsMaterials ScienceMetallurgy & Metallurgical Engineering