摘要
锌电极中的副反应和枝晶生长等问题制约其在储能领域的应用。对此,采用电泳沉积法在锌电极表面包覆凹凸棒石涂层的策略,成功制备出高性能的锌-凹凸棒石(Zn-ATP)复合电极。研究发现,凹凸棒石棒晶堆叠组成孔道丰富的功能性涂层,且涂层具有高力学强度,其组装的Zn/Zn-ATP对称电池和Zn-ATP/二氧化锰全电池具有良好的充放电循环性能。在涂层作用下,电极的析氢副反应受到明显抑制,同时,Zn沉积形成的板晶平整排列在电极表面,从而有效降低了枝晶刺穿电池隔膜的可能性。
Disadvantages such as side reactions and dendrite growth in zinc electrodes restrict the application of zinc electrodes in energy storage.A high electrochemical performance zinc-attapulgite(i.e.,Zn-ATP)composite electrode was prepared via a strategy of coating attapulgite on the surface of zinc electrode.The results show that the porous functional coating is formed by the stacking of ATP rod crystals,and it has high mechanical strength properties.The assembled Zn/Zn-ATP symmetrical battery and Zn-ATP/manganese dioxide full cell both have high performances of charge and discharge cycling.The hydrogen evolution side reaction of the electrode is significantly suppressed under the work of ATP coating.Meanwhile,the formed Zn plate crystals flatly precipitate on the electrode surface,thus effectively reducing a possibility of the dendrites penetrating the battery membrane.
作者
李尚颖
王春源
卫文飞
汪洋
LI Shangying;WANG Chunyuan;WEI Wenfei;WANG Yang(School of Land Engineering,Chang'an University,Xi'an 710064,China;School of Earth Science and Resources,Chang'an University,Xi'an 710054,China;Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining 810008,China)
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2023年第10期2617-2625,共9页
Journal of The Chinese Ceramic Society
基金
山西省科技重大专项(20181101003)
国家自然科学基金项目(42172043)
长安大学中央高校基本科研业务费专项资金资助(300102263301,300102353102,300102273203)。
关键词
凹凸棒石
复合电极
锌离子电池
电泳沉积
电化学性能
attapulgite
composite electrode
zinc ion battery
electrophoretic deposition
electrochemical performance
