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Boron-Doped, Carbon-Coated SnO2/Graphene Nanosheets for Enhanced Lithium Storage.
- Source :
- Chemistry - A European Journal; Mar2015, Vol. 21 Issue 14, p5617-5622, 6p
- Publication Year :
- 2015
-
Abstract
- Heteroatom doping is an effective method to adjust the electrochemical behavior of carbonaceous materials. In this work, boron-doped, carbon-coated SnO<subscript>2</subscript>/graphene hybrids (BCTGs) were fabricated by hydrothermal carbonization of sucrose in the presence of SnO<subscript>2</subscript>/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<superscript>−1</superscript> at 0.1 A g<superscript>−1</superscript> after 360 cycles and an excellent rate capability of 600 mA h g<superscript>−1</superscript> at 3.2 A g<superscript>−1</superscript>, and thus outperforms most of the previously reported SnO<subscript>2</subscript>-based anode materials. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09476539
- Volume :
- 21
- Issue :
- 14
- Database :
- Complementary Index
- Journal :
- Chemistry - A European Journal
- Publication Type :
- Academic Journal
- Accession number :
- 101623383
- Full Text :
- https://doi.org/10.1002/chem.201406029