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Published on: January 20, 2023
Silicon-based anodes for solid-state batteries: challenges, opportunities, and multiscale strategies
Zhenjun Zhang1, Xiangyong Xue1, Zuxue Mo1
1Guangxi Key Laboratory of Superhard Material, National Engineering Research Center for Special Mineral Materials, Guangxi Technology Innovation Center for Special Mineral Materials, China Nonferrous Metals (Guilin) Geology and Mining Co., Ltd Guilin 541004 PR China 179430756@qq.com.
This review explores silicon anodes for solid-state batteries (SSBs), addressing challenges like volume expansion. A synergistic design strategy is proposed for high-performance, safe energy storage solutions.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Solid-state batteries (SSBs) offer enhanced safety and energy density for next-generation energy storage.
- Silicon (Si) anodes are attractive due to high theoretical capacity and abundant resources.
Purpose of the Study:
- To systematically review challenges and opportunities for silicon-based anodes in SSBs.
- To propose a synergistic design strategy for improving silicon anode performance.
Main Methods:
- Literature review of silicon anode challenges in SSBs.
- Proposal of a multi-level synergistic design strategy.
- Analysis of electrode and electrolyte compatibility.
Main Results:
- Identified key limitations of silicon anodes: volume expansion, interface instability, and kinetics.
- Proposed a design strategy involving alloying, nano-structuring, and composite design.
- Highlighted the importance of electrode-electrolyte compatibility.
Conclusions:
- Silicon anodes hold significant potential for high-performance SSBs.
- A synergistic design approach is crucial for overcoming current limitations.
- Future research should focus on commercialization and scientific advancements.
