Enhanced cycling stability of antimony anode by downsizing particle and combining carbon nanotube for high-performance sodium-ion batteries
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2020年第20期
论文作者：Chuang Liu Fanxin Zeng Li Xu Shuangyu Liu Xinping Ai Hanxi Yang Yuliang Cao
文章页码：81 - 88
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.
Chuang Liu1，Fanxin Zeng1，Li Xu2，Shuangyu Liu2，Xinping Ai1，Hanxi Yang1，Yuliang Cao1
1. College of Chemistry and Molecular Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy,Wuhan University2. State Key Laboratory of Advanced Transmission Technology, Global Energy Interconnection Research Institute Co.Ltd.
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.
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