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Boron‐Doped, Carbon‐Coated SnO 2 /Graphene Nanosheets for Enhanced Lithium Storage
Author(s) -
Liu Yuxin,
Liu Ping,
Wu Dongqing,
Huang Yanshan,
Tang Yanping,
Su Yuezeng,
Zhang Fan,
Feng Xinliang
Publication year - 2015
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201406029
Subject(s) - graphene , materials science , anode , boric acid , lithium (medication) , boron , dopant , carbon fibers , chemical engineering , electrochemistry , phenylboronic acid , carbonization , doping , inorganic chemistry , nanotechnology , composite number , chemistry , electrode , composite material , catalysis , organic chemistry , optoelectronics , scanning electron microscope , medicine , endocrinology , engineering
Abstract Heteroatom doping is an effective method to adjust the electrochemical behavior of carbonaceous materials. In this work, boron‐doped, carbon‐coated SnO 2 /graphene hybrids (BCTGs) were fabricated by hydrothermal carbonization of sucrose in the presence of SnO 2 /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 SnO 2 ‐based anode materials.