Self-wrinkled graphene as a mechanical buffer: A rational design to boost the K-ion storage performance of Sb2Se3 nanoparticles

Abstract Design a strategy to relieve the huge volume expansion of high-capacity anode materials for alkali ion batteries is still a challenge. Herein, the self-wrinkled reduced graphene oxide (RGO) sheets are employed as a mechanical buffer to release the mechanical stress and retard the volume expansion of Sb2Se3-based anode material for K-ion storage. By using hydrothermal reaction and followed selenylation process, the Sb2Se3 nanoparticles (