1. Boron-Doped, Carbon-Coated SnO2/Graphene Nanosheets for Enhanced Lithium Storage.
- Author
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Liu, Yuxin, Liu, Ping, Wu, Dongqing, Huang, Yanshan, Tang, Yanping, Su, Yuezeng, Zhang, Fan, and Feng, Xinliang
- Subjects
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DOPING agents (Chemistry) , *ELECTROCHEMICAL analysis , *ELECTRIC properties of graphene , *STANNIC oxide , *LITHIUM-ion batteries , *NANOFABRICATION , *HYDROTHERMAL carbonization - Abstract
Heteroatom doping is an effective method to adjust the electrochemical behavior of carbonaceous materials. In this work, boron-doped, carbon-coated SnO2/graphene hybrids (BCTGs) were fabricated by hydrothermal carbonization of sucrose in the presence of SnO2/graphene nanosheets and phenylboronic acid or boric acid as dopant source and subsequent thermal treatment. Owing to their unique 2D core-shell architecture and B-doped carbon shells, BCTGs have enhanced conductivity and extra active sites for lithium storage. With phenylboronic acid as B source, the resulting hybrid shows outstanding electrochemical performance as the anode in lithium-ion batteries with a highly stable capacity of 1165 mA h g−1 at 0.1 A g−1 after 360 cycles and an excellent rate capability of 600 mA h g−1 at 3.2 A g−1, and thus outperforms most of the previously reported SnO2-based anode materials. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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