电解质
阳极
电化学
材料科学
离子键合
化学工程
离子液体
相间
水溶液
锌
离子
无机化学
化学
电极
有机化学
冶金
物理化学
催化作用
工程类
生物
遗传学
作者
Weiping Liu,Caixia Li,Kai Zhang,Shenghao Zhang,Chao Zhang,Yu Yang,Lei Wang
出处
期刊:Small
[Wiley]
日期:2023-12-10
卷期号:20 (19)
被引量:6
标识
DOI:10.1002/smll.202309057
摘要
Abstract Artificial solid electrolyte interphase in organic solutions is effective and facile for long‐cycling aqueous zinc ion batteries. However, the specific effects on different ionic environments have not been thoroughly investigated. Herein, pyromellitic acid (PA) are employed as organic ligand to coordinate with Zn 2+ under various ionic environments. The connection between the ionic environment and reaction spontaneity is analyzed to provide insights into the reasons behind the effectiveness of the SEI layer and to characterize its protective impact on the zinc anode. Notably, the PA solution (pH4) lacking OH − contributes to the formation of a dense and ultrathin SEI with Zn‐PA coordination, preventing direct contact between the anode and electrolyte. Moreover, the presence of organic functional groups facilitates a uniform flux of Zn 2+ . These advantages enable stable cycling of the PA4‐Zn symmetric cell at a current density of 3 mA cm −2 for over 3500 h. The PA4‐Zn//MVO full cell demonstrates excellent electrochemical reversibility. Investigating the influence of the ionic environment on SEI generation informs the development of novel SEI strategies.
科研通智能强力驱动
Strongly Powered by AbleSci AI