Ultrafine nano-scale Cu<sub>2</sub>Sb alloy confined in three-dimensional porous carbon as an anode for sodium-ion and potassium-ion batteries

Dan Wang; Qun Ma; Kang-hui Tian; Chan-Qin Duan; Zhi-yuan Wang; Yan-guo Liu

doi:10.1007/s12613-021-2286-2

Volume 28 Issue 10

Sep. 2021

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International Journal of Minerals, Metallurgy and Materials > 2021 > 28(10): 1666-1674. > DOI: 10.1007/s12613-021-2286-2

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-dimensional porous carbon as an anode for sodium-ion and potassium-ion batteries, Int. J. Miner. Metall. Mater., 28(2021), No. 10, pp.1666-1674. https://dx.doi.org/10.1007/s12613-021-2286-2

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Research Article

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

Dan Wang^{1, 2, 3)},
Qun Ma¹⁾,
Kang-hui Tian¹⁾,
Chan-Qin Duan¹⁾,
Zhi-yuan Wang^{1, 2, 3), ,} and
Yan-guo Liu^{1, 2, 3), ,}

Author Affilications

1)
School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China
2)
School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China
3)
Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province, Qinhuangdao 066004, China

Funds: This study was financially supported by the National Natural Science Foundation of China (Nos. 51871046, 51902046, 52071073, 51874079, 51571054, 51771046, and 51674068), the Natural Science Foundation of Liaoning Province, China (No. 201602257), Natural Science Foundation of Hebei Province, China (Nos. E2019501097, E2018501091, E2020501004), the Science and Technology Project of Hebei Province, China (No. 15271302D), and the Fundamental Research Funds for the Central Universities, China (Nos. N182304017, N182304015, N172302001, N172304044)

Corresponding author:
Zhi-yuan Wan E-mail: zhiyuanwang@neuq.edu.cn

Yan-guo Liu E-mail: lyg@neuq.edu.cn
Received: 30 December 2020; Revised: 24 March 2021; Accepted: 25 March 2021; Available Online: 26 March 2021

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Abstract

Abstract

Ultrafine nano-scale Cu₂Sb alloy confined in a three-dimensional porous carbon was synthesized using NaCl template-assisted vacuum freeze-drying followed by high-temperature sintering and was evaluated as an anode for sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs). The alloy exerts excellent cycling durability (the capacity can be maintained at 328.3 mA·h·g⁻¹ after 100 cycles for SIBs and 260 mA·h·g⁻¹ for PIBs) and rate capability (199 mA·h·g⁻¹ at 5 A·g⁻¹ for SIBs and 148 mA·h·g⁻¹ at 5 A·g⁻¹ for PIBs) because of the smooth electron transport path, fast Na/K ion diffusion rate, and restricted volume changes from the synergistic effect of three-dimensional porous carbon networks and the ultrafine bimetallic nanoalloy. This study provides an ingenious design route and a simple preparation method toward exploring a high-property electrode for K-ion and Na-ion batteries, and it also introduces broad application prospects for other electrochemical applications.
- copper–antimony alloy,
- anode,
- porous carbon,
- potassium-ion batteries,
- sodium-ion batteries

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