Releasing plating-induced stress for highly reversible aqueous Zn metal anodes

Jianyu Chen, Xin Qiao, Xuran Han, Jinghao Zhang, Hanbo Wu, Qian He, Zibo Chen, Li Shi, Yizhou Wang, Yannan Xie*, Yanwen Ma, Jin Zhao

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

Rechargeable aqueous zinc-ion batteries (ZIBs) have become one of the most potential technologies for grid-scale energy storage systems. The practical application, however, has been severely plagued by the uncontrollable dendrite growth and side reactions on ZIB anodes with planar structure, making it urgent to develop efficient strategies to stabilize Zn anodes. Herein, it is revealed that the Zn dendrite growth is strongly associated with the internal stress accumulation during Zn plating. Moreover, a Zn metal anode with patterned micro-grooves structure that can effectively release the plating-induced stress and inhibit the dendrite growth. Notably, the groove-patterned Zn anodes coupling with Nafion film coating could effectively depress the side reactions and present ultra-stable cycling over 1200 h at a high current density of 10 mA cm−2, a low electrochemical polarization for the rate performance range from 1 to 20 mA cm−2 as well as a stable voltage hysteresis in deep discharge/charge performance at 10 mA cm−2 and 10 mAh cm−2. The feasibility of the proposed strategy is further confirmed and implemented in the Zn|MnO2 flexible pouch cell which delivers an impressive capacity of 186 mAh g−1, high electrochemical stability, and outstanding mechanical flexibility. The finding of this study is expected to provide a deep insight into the design of highly reversible aqueous Zn-ion batteries.

Original languageEnglish (US)
Article number107814
JournalNano Energy
Volume103
DOIs
StatePublished - Dec 1 2022

Bibliographical note

Funding Information:
This work is jointly supported by the Project of State Key Laboratory of Organic Electronics and Information Displays, Nanjing University of Posts and Telecommunications (GZR2022010017, GDX2022010010), NSFC (91963119, 52102265, 61974071), National Key Research and Development Program of China (2021YFA1202904, 2017YFA0205302), Jiangsu Shuangchuang Talent Program, and StartUp Fund from Nanjing University of Posts and Telecommunications (NY218151, NY220069, NY220085, NY221128). China Postdoctoral Science Foundation (2020M681681), Jiangsu Provincial NSF (BK20210604), Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD, YX030003), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM).

Publisher Copyright:
© 2022

Keywords

  • Aqueous Zn batteries
  • Dendrites suppression
  • Groove structure
  • Stress releasing
  • Zn metal anodes

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • General Materials Science
  • Electrical and Electronic Engineering

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