摘要
Developing high-performance anode materials for potassium-ion batteries is significantly urgent. We here demonstrate Sb_2S_3 nanoparticles(~20 nm) homogeneously dispersed in porous S,N-codoped graphene framework(Sb_2S_3-SNG) as a self-supported anode material for potassium-ion batteries. The rational structure design of integrating Sb_2S_3 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 Sb_2S_3-SNG/KVPO_4 F-C full cell to ~166.3 W h kg^(-1).
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 ofa Sb2S3-SNG/KVPO4F-C full cell to -166.3 W h kg- 1.
基金
supported by the National Natural Science Foundation of China (21231005, 51231003)
the Program of Introducing Talents of Discipline to Universities of China (B12015)
