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Design Strategies toward High-Performance Zn Metal Anode
Wei Nie1, Hongwei Cheng1, Qiangchao Sun1
1State Key Laboratory of Advanced Special Steel & School of Materials Science and Engineering, Shanghai University, Shanghai, 200444, China.
Small Methods
|February 25, 2023
Summary
Rechargeable aqueous zinc-ion batteries show promise, but zinc anodes face dendrite and corrosion issues. This review outlines failure mechanisms and strategies for stable zinc anodes, enabling grid-scale energy storage.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Rechargeable aqueous zinc-ion batteries (AZIBs) are attractive energy storage solutions due to cost, resource availability, safety, and environmental benefits.
- Zinc metal anodes in AZIBs suffer from critical issues like dendrite formation, hydrogen evolution, corrosion, and passivation.
- These anode challenges are interconnected, hindering the development of high-performance AZIBs.
Purpose of the Study:
- To comprehensively review the failure mechanisms of zinc anodes in AZIBs.
- To summarize recent advancements and strategies for improving zinc anode stability.
- To provide insights and a roadmap for developing stable zinc anodes and advancing AZIB technology.
Main Methods:
- Literature review and analysis of failure mechanisms in zinc anodes.
- Categorization of strategies for enhancing zinc anode stability.
- Discussion of impacts of various approaches on anode performance.
Main Results:
- Detailed outline of zinc anode failure modes and their consequences.
- Summary of progress in structurally designed zinc anodes, zinc alloy anodes, surface modification, electrolyte optimization, and separator design.
- Identification of key areas for future research and development.
Conclusions:
- Addressing zinc anode instability is crucial for realizing the potential of AZIBs.
- Multiple strategies, including material design and electrolyte engineering, are being explored to improve anode performance.
- This review offers perspectives to promote the large-scale application of AZIBs in grid-scale energy storage systems.
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