相间
阳极
电解质
材料科学
金属
聚合物
原位
合理设计
化学工程
无机化学
纳米技术
冶金
电极
化学
复合材料
有机化学
工程类
遗传学
物理化学
生物
作者
Ruwei Chen,Wei Zhang,Chaohong Guan,You Zhou,Ian S. Gilmore,Hao Tang,Zhenyu Zhang,Haobo Dong,Yuhang Dai,Zijuan Du,Xuan Gao,Wei Zong,Ye Xu,Peie Jiang,Jiyang Liu,Fangjia Zhao,Jianwei Li,Xiaohui Wang,Guanjie He
标识
DOI:10.1002/anie.202401987
摘要
The in-depth understanding of the composition-property-performance relationship of solid electrolyte interphase (SEI) is the basis of developing a reliable SEI to stablize the Zn anode-electrolyte interface, but it remains unclear in rechargeable aqueous zinc ion batteries. Herein, a well-designed electrolyte based on 2 M Zn(CF3SO3)2-0.2 M acrylamide-0.2 M ZnSO4 is proposed. A robust polymer (polyacrylamide)-inorganic (Zn4SO4(OH)6.xH2O) hybrid SEI is in situ constructed on Zn anodes through controllable polymerization of acrylamide and coprecipitation of SO42- with Zn2+ and OH-. For the first time, the underlying SEI composition-property-performance relationship is systematically investigated and correlated. The results showed that the polymer-inorganic hybrid SEI, which integrates the high modulus of the inorganic component with the high toughness of the polymer ingredient, can realize high reversibility and long-term interfacial stability, even under ultrahigh areal current density and capacity (30 mA cm-2~30 mAh cm-2). The resultant Zn||NH4V4O10 cell also exhibits excellent cycling stability. This work will provide a guidance for the rational design of SEI layers in rechargeable aqueous zinc ion batteries.
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