剥离(纤维)
阳极
法拉第效率
材料科学
化学工程
电镀(地质)
电化学
锌
涂层
膜
离子交换
无机化学
水溶液
电极
离子
纳米技术
化学
冶金
复合材料
有机化学
物理化学
工程类
地质学
生物化学
地球物理学
作者
Hong Lin,Xiuming Wu,Liangyu Wang,Min Zhong,Peiying Zhang,Lingsheng Jiang,Wei Huang,Yuling Wang,Kai‐Xue Wang,Jie‐Sheng Chen
出处
期刊:ACS Nano
[American Chemical Society]
日期:2022-04-13
卷期号:16 (4): 6906-6915
被引量:107
标识
DOI:10.1021/acsnano.2c02370
摘要
Rechargeable aqueous zinc-ion batteries (ZIBs) have attracted extensive attention due to their low cost and high safety. However, the critical issues of dendrite growth and side reactions on the Zn metal anode hinder the commercialization of ZIBs. Herein, we demonstrated that the formation of Zn4SO4(OH)6·5H2O byproducts is closely relevant to the direct contact between the Zn electrode and SO42–/H2O. On the basis of this finding, we developed a cation-exchange membrane of perfluorosulfonic acid (PFSA) coated on the Zn surface to regulate the Zn plating/stripping behavior. Importantly, the PFSA film with abundant sulfonic acid groups could simultaneously block the access of SO42– and H2O, accelerate the Zn2+ ion transport kinetics, and uniformize the electrical and Zn2+ ion concentration field on the Zn surface, thus achieving a highly reversible Zn plating/stripping process with corrosion-free and dendrite-free behavior. Consequently, the PFSA-modified Zn anode exhibits high reversibility with 99.5% Coulombic efficiency and excellent plating/stripping stability (over 1500 h), subsequently enabling a highly rechargeable Zn-MnO2 full cell. The strategy of the cation-exchange membrane proposed in this work provides a simple but efficient method for suppression of side reactions.
科研通智能强力驱动
Strongly Powered by AbleSci AI