Unveiling the Descriptor of Parasitic Reactions of Zinc Anode: A Comparative Study of Trace Pyridinesulfonic Acid‐Based Additives in Aqueous Electrolyte

Author:

Zhang Jie1,Wang Yujie1,Zhao Zhiwei1ORCID,Li Pengfei1,Tang Guochuan2,Chen Weihua2,Peng Zhangquan1ORCID

Affiliation:

1. Laboratory of Advanced Spectro‐electrochemistry and Li‐ion Batteries Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China

2. College of Chemistry & Green Catalysis Center Zhengzhou University Zhengzhou 450001 China

Abstract

AbstractUnderstanding and controlling parasitic reactions on the Zn metal anode (ZMA) surface is essential to enhance the energy capabilities of aqueous zinc‐ion batteries (ZIBs). However, the accurate regulation scheme is often obscured due to the lack of fundamental understanding concerning the ZMA/electrolyte interface. Herein, the descriptor of interfacial parasitic reactions is revealed through a systematic comparative study of three model trace adsorption‐type pyridinesulfonic acid‐based additives with structural variations. Using in situ spectroscopies coupled with density functional theory calculations, direct spectroscopic evidence of interfacial H2O evolution during Zn2+ deposition process is obtained. It is proposed that, beyond the traditional cognitions, the distance between solvated Zn(H2O)62+ and ZMA surface highly dictates the stability of ZMAs. Consequently, the trace 3‐Pyridinesulfonic acid with most effective capacity to drive solvated Zn(H2O)62+ away from the ZMA surface, enables a robust cycle life over 420 h for the Zn||Zn symmetric cell at 10 mA cm−2/10 mAh cm−2 (depth of discharge of 45%), a high Coulombic efficiency of 99.78% and an extended cycling life of 1500 cycles for the Zn//NH4V4O10 full battery. The work sheds light on the underlying mechanism of parasitic reactions on ZMA surface and provides fundamental insights into the design of trace additives for better ZIBs.

Funder

National Natural Science Foundation of China

National Key Research and Development Program of China

Publisher

Wiley

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3