Ultrafine Sulfur Nanoparticles in Conducting Polymer Shell as Cathode Materials for High Performance Lithium/Sulfur Batteries

被引:203
作者
Chen, Hongwei [1 ,2 ]
Dong, Weiling [1 ,3 ]
Ge, Jun [1 ]
Wang, Changhong [1 ,4 ]
Wu, Xiaodong [1 ]
Lu, Wei [1 ]
Chen, Liwei [1 ]
机构
[1] Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion SINANO, i LAB, Suzhou 215123, Peoples R China
[2] Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China
[3] Chinese Acad Sci, Inst Semicond, Beijing 100083, Peoples R China
[4] Univ Sci & Technol China, Nano Sci & Technol Inst, Suzhou 215123, Peoples R China
来源
SCIENTIFIC REPORTS | 2013年 / 3卷
基金
中国国家自然科学基金;
关键词
ELECTROCHEMICAL PROPERTIES; RATE CAPABILITY; HIGH-CAPACITY; COMPOSITE; PARTICLES; NANOTUBES;
D O I
10.1038/srep01910
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
We report the synthesis of ultrafine S nanoparticles with diameter 10 similar to 20 nm via a membrane-assisted precipitation technique. The S nanoparticles were then coated with conducting poly (3,4-ethylenedioxythiophene) (PEDOT) to form S/PEDOT core/shell nanoparticles. The ultrasmall size of S nanoparticles facilitates the electrical conduction and improves sulfur utilization. The encapsulation of conducting PEDOT shell restricts the polysulfides diffusion, alleviates self-discharging and the shuttle effect, and thus enhances the cycling stability. The resulting S/PEDOT core/shell nanoparticles show initial discharge capacity of 1117 mAh g(-1) and a stable capacity of 930 mAh g(-1) after 50 cycles.
引用
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页数:6
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