电解质
阳极
电化学
相间
化学工程
锌
材料科学
容量损失
电偶阳极
电流密度
金属
化学
无机化学
阴极保护
电极
冶金
遗传学
物理化学
工程类
生物
物理
量子力学
作者
Congjian Lin,Tian Chen Li,Pinji Wang,Yongtai Xu,Dong‐Sheng Li,Aleš Slíva,Hui Ying Yang
标识
DOI:10.1002/smtd.202400127
摘要
Abstract Stabilizing the Zn anode/electrolyte interface is critical for advancing aqueous zinc ion storage technologies. Addressing this challenge helps minimize parasitic reactions and controls the formation of Zn dendrites, which is fundamental to achieving highly reversible Zn electrochemistry. In this study, 2% by volume of dimethyl sulfoxide (DMSO) is introduced into the baseline zinc sulfate (ZS) electrolyte, which acts as an efficient regulator to form a robust solid–electrolyte interphase (SEI) on the Zn anode. This innovative approach enables uniform Zn deposition and does not substantially modify the Zn 2+ solvation structure. The Zn||Zn symmetric cell exhibits an extended cycle life of nearly one calendar year (>8500 h) at a current density of 0.5 mA cm −2 and an areal capacity of 0.5 mAh cm −2 . Impressive full cell performance can be achieved. Specifically, the Zn||VS 2 full cell achieves an areal capacity of 1.7 mAh cm −2 , with a superior negative‐to‐positive capacity ratio of 2.5, and an electrolyte‐to‐capacity ratio of 101.4 µL mAh −1 , displaying remarkable stability over 1000 cycles under a high mass loading of 11.0 mg cm −2 without significant degradation. This innovative approach in electrolyte engineering provides a new perspective on in situ SEI design and furthers the understanding of Zn anode stabilization.
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