A mesoporous antimony-based nanocomposite for advanced sodium ion batteries

被引:84
作者
Ma, Wensheng [1 ]
Wang, Jiawei [2 ]
Gao, Hui [1 ]
Niu, Jiazheng [1 ]
Luo, Fakui [1 ]
Peng, Zhangquan [2 ]
Zhang, Zhonghua [1 ]
机构
[1] Shandong Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Jingshi Rd 17923, Jinan 250061, Shandong, Peoples R China
[2] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Jilin, Peoples R China
基金
中国国家自然科学基金;
关键词
Sodium ion batteries; Operando X-ray diffraction; Mesoporous structure; Anode material; Dealloying; HIGH-CAPACITY ANODE; GRAPHENE OXIDE COMPOSITE; SUPERIOR RATE CAPABILITY; LONG-CYCLE LIFE; NA-ION; ELECTROCHEMICAL PERFORMANCE; CARBON NANOFIBERS; SB; STORAGE; INSERTION;
D O I
10.1016/j.ensm.2018.01.016
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Developing advanced electrode materials and understanding the electrochemistry of electrode reactions are two main issues to be addressed for high-performance sodium ion batteries (SIBs). Through a one-step dealloying strategy which simultaneously incorporates the nanoarchitecture, mesoporous structure and nanocomposite of electrode materials, here we synthesized novel Sb2O3@Sb nanocomposite with an ultrafine bicontinuous mesoporous structure. When being used as an anode for SIBs, the Sb2O3@Sb nanocomposite exhibits ultrahigh specific capacity (659 mA h g(-1)), overwhelming rate capability (200 mA h g(-1) at 29.7 A g(-1)) and excellent cycling stability (capacity retention of 99.8% after 200 cycles at 0.2 A g(-1)). Coupled by a Na3V2(PO4)(3) cathode and a Sb2O3@Sb anode, a full cell was further constructed and delivers excellent performance (reversible capacity, cycling stability and rate capability). Most importantly, the sodium storage mechanisms of the Sb2O3@Sb nanocomposite were unveiled by operando X-ray diffraction and Raman techniques.
引用
收藏
页码:247 / 256
页数:10
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