Ultrafine nano-scale Cu_(2)Sb alloy confined in three-dimensional porous carbon as an anode for sodium-ion and potassium-ion batteries

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

作者机构：School of Materials Science and EngineeringNortheastern UniversityShenyang 110819China School of Resources and MaterialsNortheastern University at QinhuangdaoQinhuangdao 066004China Key Laboratory of Dielectric and Electrolyte Functional Material Hebei ProvinceQinhuangdao 066004China 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2021年第28卷第10期

页      面：1666-1674页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：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) the Fundamental Research Funds for the Central Universities,China(Nos.N182304017,N182304015,N172302001,N172304044) 

主　　题：copper-antimony alloy anode porous carbon potassium-ion batteries sodium-ion batteries 

摘      要：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 *** 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.