Regulated Ion/Electron‐Conducting Interphase Enables Stable Zinc‐Metal Anodes for Aqueous Zinc‐Ions Batteries

Author:

Zhou Jiahui1,Mei Yang1,Wu Feng1234,Hao Yutong1,Ma Wenwen1,Li Li1234,Xie Man1,Chen Renjie123ORCID

Affiliation:

1. Beijing Key Laboratory of Environmental Science and Engineering School of Material Science & Engineering Beijing Institute of Technology Beijing 100081 China

2. Advanced Technology Research Institute (Jinan) Beijing Institute of Technology Jinan 250300 China

3. Collaborative Innovation Center of Electric Vehicles in Beijing Beijing 100081 China

4. Guangdong Key Laboratory of Battery Safety Guangzhou Institute of Energy Testing Guangdong 511447 China

Abstract

AbstractMetallic Zinc (Zn) is considered as a remarkably promising anode for aqueous Zn‐ion batteries due to its high volumetric capacity and low redox potential. Unfortunately, dendritic growth and severe side reactions destabilizes the electrode/electrolyte interface, and ultimately reduce the electrochemical performance. Here, an artificial protective layer (APL) with a regulated ion and electron‐conducting interphase is constructed on the Zn‐metal anode to provide excellent interfacial stability in high‐rate cycling. The superior ionic and moderate electronic conductivity of the APL derives from the co‐embedding of MXene and Zn(CF3SO3)2 salts into the polyvinyl alcohol hydrogel, which enables a synergistic effect of local current density reduction during plating and ion transport acceleration during stripping for Zn anode. Furthermore, the high Young's modulus of the protective layer and dendrite‐free deposition morphology during cycling suppresses hydrogen evolution reactions (2.5 mmol h−1 cm−2) and passivation. As a result, in symmetrical cell tests, the modified battery presents a stable life of over 2000 cycles at ultra‐high current density of 20 mA cm−2. This research presents a new insight into the formation and regulation of stable electrode‐electrolyte interface for the Zn‐metal anode.

Funder

National Natural Science Foundation of China

Postdoctoral Research Foundation of China

Publisher

Wiley

Subject

General Chemistry,Catalysis

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