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Official PDF TranslationSCIENCE CHINA Materials

Germanium-Based Key Materials for Potassium-Ion Batteries: Storage Mechanisms, Performance Enhancement, and Advanced Design Strategies

Authors: Jingxian Yu; Fanglan Mo; Hongyan Li

DOI: 10.1007/s40843-026-4344-5Status: Verified Translated Edition
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Key Findings in This Report

• • Ge-based anodes exhibit a theoretical capacity of 369 mAh g-1, but practical application is limited by volume expansion and unstable SEI films, necessitating advanced engineering strategies. • • Nanostructuring and composite design with conductive supports (e.g., carbon) can mitigate volume changes and enhance cycling stability, with some Ge/C composites retaining >80% capacity after 500 cycles at 0.5 A g-1. • • Electrolyte modification, such as using concentrated electrolytes or additives, improves SEI stability and coulombic efficiency, achieving >99.5% over 200 cycles. • • High-throughput computational screening combined with experimental validation accelerates discovery of optimal Ge-based compositions and electrolyte formulations, reducing development time by up to 40%.