Robust self-supported anode by integrating Sb2S3 nanoparticles with S,N-codoped graphene to enhance K-storage performance

• 来源期刊: 中国科学:化学（英文版）
• 年，卷（期）: 2017,（12）
• 页码范围: 1533-1539
• 页数: 7页
• 语种: 英文
• DOI: 10.1007/s11426-017-9166-0

摘要

Developing high-performance anode materials for potassium-ion batteries is significantly urgent.We here demonstrate Sb2S3 nanoparticles (～20 nm) homogeneously dispersed in porous S,N-codoped graphene framework (Sb2S3-SNG) as a self-supported anode material for potassium-ion batteries.The rational structure design of integrating Sb2S3 nanoparticles with S,N-codoped graphene contributes to high reactivity,strong affinity,good electric conductivity,and robust stability of the composite,enabling superior K-storage performance.Moreover,the self-supported architecture significantly decreases the inactive weight of the battery,resulting in a high energy density of a Sb2S3-SNG/KVPO4F-C full cell to ～166.3 W h kg-1.