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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).
We present that 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 significant decreases the inactive weight of the battery, resulting in a high energy density of a Sb_2S_3-SNG / KVPO_4 FC full cell to ~ 166.3 W h kg -1.