Large-size carbon-coated SnO2 composite as improved anode material for lithium ion batteries

被引:10
|
作者
Xie, Wenhe [1 ]
Wang, Wenjie [1 ]
Xu, Zijun [1 ]
Zheng, Wenrui [1 ]
Yue, Hongwei [2 ,3 ]
Wang, Chunlei [4 ]
Zhang, Chao [4 ]
Sun, Haibin [4 ]
机构
[1] Xinyang Normal Univ, Key Lab Microelect & Energy Henan Prov, Xinyang 464000, Peoples R China
[2] Xuchang Univ, Key Lab Micronano Mat Energy Storage & Convers He, Xuchang 461000, Henan, Peoples R China
[3] Xuchang Univ, Coll Adv Mater & Energy, Xuchang 461000, Henan, Peoples R China
[4] Xinyang Normal Univ, Energy Saving Bldg Mat Innovat Collaborat Ctr Hen, Xinyang 464000, Peoples R China
基金
中国国家自然科学基金;
关键词
Electrospinning; SnO2@C composite; Polydopamine; Anode; CORE-SHELL STRUCTURE; ELECTROCHEMICAL PERFORMANCE; NANOFOAMS COMPOSITES; NANOFIBERS; NANOCOMPOSITE; NANOPARTICLES; FABRICATION; PARTICLES; NANOTUBES; TEMPLATE;
D O I
10.1007/s11581-020-03764-6
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
SnO(2)microbelt coating carbon composite was fabricated via electrospinning precursor, thermal treatment, and polymer adhesion process. Primarily, the solvent of electrospinning jet quickly evaporates in a relatively high-temperature environment; intermediate microtubules simultaneously form when the solute containing tin salt and binder converge on the skin of the jet; then, the microtubules collapse into flat microbelt product under the action of atmospheric pressure. Subsequently, SnO(2)microbelts can be obtained by annealing the electrospinning products. Finally, the SnO2@C microbelts are synthesized by dopamine polymerization and carbonization process. The SnO2@C microbelts present a regular strip with width similar to 1.2 mu m and thickness similar to 120 nm. Because of the synergy effect of carbon coating and SnO(2)microbelt design project, the composite shows superior lithium storage of 504 mAh g(-1)after 100 cycles at 0.2 A g(-1). The SnO2@C microbelts are expected to be competitive alternative anode material of next-generation LIBs.
引用
收藏
页码:5879 / 5887
页数:9
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