Scalable fabrication of antimony nanoparticles confined in a porous carbon framework for high-performance sodium-ion batteries

作     者：Wensheng Ma Wanfeng Yang Weimin Wang Qingguo Bai Zhonghua Zhang Wensheng Ma;Wanfeng Yang;Weimin Wang;Qingguo Bai;Zhonghua Zhang

作者机构：Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education)School of Materials Science and EngineeringShandong UniversityJinan 250061China 

出 版 物：《ChemPhysMater》 (化学物理材料（英文）)

年 卷 期：2022年第1卷第2期

页      面：112-118页

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：Taishan Scholar Founda-tion of Shandong Province and Jinan Science and Technology Bureau(2019GXRC001) 

主　　题：Pyrolysis method Antimony anodes Sodium-ion batteries Online DEMS 

摘      要：Engineering of carbon/metal nanocomposites with small metal particles is promising for the development of alloy-type ***,an Sb@C composite was developed from a commercial potassium antimony tartrate precursor using a scalable pyrolysis *** Sb nanoparticles are confined within a porous carbon framework,which substantially facilitates the diffusion of Na-ion/electrons and effectively alleviates the charg-ing/discharging induced volume *** obtained Sb@C material displays excellent electrochemical perfor-mance for Na^(+) *** Na^(+) diffusion behavior of Sb@C was comprehensively investigated using various methods,and its gas evolution during the discharge/charge was monitored via online mass ***,Sb@C was assembled into full *** discharge/charge processes,the Na_(3)V_(2)(PO_(4))_(2)F_(3)/Sb@C full cells de-livered a competitive working voltage of 2.95 V and a capacity retention of 93.4%(50 cycles@0.2 A g^(−1)).Considering its facile preparation method from a commercial precursor,the Sb@C composite can potentially realize a large-scale application of sodium-ion batteries.