Enhanced cycling stability of antimony anode by downsizing particle and combining carbon nanotube for high-performance sodium-ion batteries  

作　　者：Chuang Liu Fanxin Zeng Li Xu Shuangyu Liu Jincheng Liu Xinping Ai Hanxi Yang Yuliang Cao 

机构地区：[1]College of Chemistry and Molecular Sciences,Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy,Wuhan University,Wuhan 430072,China [2]State Key Laboratory of Advanced Transmission Technology,Global Energy Interconnection Research Institute Co.Ltd.,Beijing 102211,China [3]EVE Energy Co.ltd.,No.36,Huifeng 7th Road,Zhongkai Hi-Tech Zone,Huizhou,China

出　　处：《Journal of Materials Science & Technology》2020年第20期81-88,共8页材料科学技术（英文版）

基　　金：This work was support by the National Nature Science Foundation of China(21673165);Science and Technology Project of State Grid Corporation of China(No.SGRIDGKJ[2017]841)and JCKY2016130B010。

摘　　要：Antimony(Sb)nanoparticles(SbNP)encapsulated in multiwalled carbon nanotubes(MWCNTs)matrix has been fabricated by a facile two-step ball milling strategy,including a sand milling process to prepare Sb nanoparticles and following high-energy ball milling to synthesize SbNP-MWCNT composite.As an anode material for sodium-ion batteries(SIBs),the SbNP-MWCNT composite with high Sb content(80%)can deliver a reversible capacity of 471.1 mA hg^(-1)at 50 mA g^(-1)with an initial coulombic efficiency of 73.5%,excellent cycling stability(94.1%capacity retention at 800 mA g^(-1))and high rate capability(210.7 mA h g^(-1)at 3200 mA g^(-1)).The excellent electrochemical performance of the SbNP-MWCNT composite results from the synergistic effect of downsizing Sb particles and combining MWCNTs.

关 键 词：ANTIMONY Nanoparticles Carbon nanotubes ANODE Sodium ion battery Mechanical ball milling 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TM912[电气工程—电力电子与电力传动]