Advanced rechargeable zinc-air battery with parameter optimization

被引:81
作者
Wang, Keliang [1 ]
Pei, Pucheng [2 ]
Wang, Yichun [1 ]
Liao, Cheng [1 ]
Wang, Wei [1 ]
Huang, Shangwei [2 ]
机构
[1] Beijing Inst Technol, Sch Mech Engn, Beijing 100081, Peoples R China
[2] Tsinghua Univ, State Key Lab Automot Safety & Energy, Beijing 100084, Peoples R China
基金
中国国家自然科学基金;
关键词
Cycle life; Dendrite growth; Structure optimization; Electrolyte management; Magnetic field; Rechargeable zinc-air battery; OXYGEN REDUCTION REACTION; BIFUNCTIONAL ELECTROCATALYST; FUEL-CELL; PERFORMANCE; ANODE; TECHNOLOGIES; ELECTRODE; GROWTH; ENERGY;
D O I
10.1016/j.apenergy.2018.05.071
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Zinc-air batteries will be a promising candidate for storage energy and power supply due to their high specific energy, environmental compatibility, and economic availability. However, the problem of cycle life of rechargeable zinc-air battery remains unresolved mainly because of dendrite growth of electrodeposited zinc and performance degradation of air electrode. Here we show that rechargeable zinc-air battery with an optimized structure can stably run at large current densities, where air electrode is connected to the charging electrode through a stainless steel frame, and the effective area of charging electrode is larger than that of zinc electrode by way of a trapezoidal structure. This battery structure can control morphological change of zinc electrode and monitor dendrite growth without increasing the battery volume. The results demonstrate that the charge-discharge efficiency of rechargeable zinc-air battery can be improved by nickel foam as gas diffusion layer of air electrode, calcium oxide additive to the electrolyte, or a permanent magnet in parallel with the electrode. The lifetime of rechargeable zinc-air battery can be extended by electrolyte flow or battery structure optimization. These findings will be available for other metal-air batteries and electrolytic metal industry.
引用
收藏
页码:848 / 856
页数:9
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