Dan Wang, Qun Ma, Kang-hui Tian, Chan-qin Duan, Zhi-yuan Wang, and Yan-guo Liu, Ultrafine nano-scale Cu2Sb alloy confined in three-dimension porous carbon as anode for sodium-ion and potassium-ion batteries, Int. J. Miner. Metall. Mater. https://doi.org/10.1007/s12613-021-2286-2
Cite this article as:
Dan Wang, Qun Ma, Kang-hui Tian, Chan-qin Duan, Zhi-yuan Wang, and Yan-guo Liu, Ultrafine nano-scale Cu2Sb alloy confined in three-dimension porous carbon as anode for sodium-ion and potassium-ion batteries, Int. J. Miner. Metall. Mater. https://doi.org/10.1007/s12613-021-2286-2
Research Article

Ultrafine nano-scale Cu2Sb alloy confined in three-dimension porous carbon as anode for sodium-ion and potassium-ion batteries

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  • Received: 31 December 2020Revised: 25 March 2021Accepted: 26 March 2021Available online: 27 March 2021
  • Ultrafine nano-scale Cu2Sb alloy confined in three-dimension porous carbon is synthesized through NaCl template-assisted vacuum freeze-drying followed by high temperature sintering process and is evaluated as anode for sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs). It exerts excellent cycling durability (the capacity can be maintained at 328.3 mAh g-1 after 100 cycles for SIBs and 260 mAh g-1 for PIBs) and rate capability (199 mAh g−1 at 5 A g−1 for SIBs and 148 mAh g−1 at 5 A g−1 for PIBs) due to smooth electron transport path and fast Na/K ion diffusion rate as well as restricted volume changes owning to the synergistic effect of three-dimensional porous carbon networks and ultrafine bimetallic nanoalloy. This study provides an ingenious design route and simple preparation method towards exploring high-property electrode for K-ion and Na-ion batteries, and it also opens up broad application prospects in other electrochemical applications.
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