Mitigating volume expansion in alloy-type anodes for potassium-ion batteries: mechanistic insights and material engineering strategies

Key Points

• This review aims to explore the mechanisms and engineering strategies for improving alloy-type anodes in potassium-ion batteries.
• Reviewed advances in alloy-type anodes for potassium-ion batteries.
• Outlined mechanisms involved in multi-electron reactions and capacity performance.
• Suggested future guidelines for material engineering.
• Identified critical challenges related to volume expansion in alloy-type anodes.
• Proposed mechanistic insights that can inform synthetic strategies.
• Developed a roadmap for future research in potassium-ion battery technology.