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SnO 2 Quantum Dots@Graphene Oxide as a High‐Rate and Long‐Life Anode Material for Lithium‐Ion Batteries
Author(s) -
Zhao Kangning,
Zhang Lei,
Xia Rui,
Dong Yifan,
Xu Wangwang,
Niu Chaojiang,
He Liang,
Yan Mengyu,
Qu Longbin,
Mai Liqiang
Publication year - 2016
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201502183
Subject(s) - graphene , materials science , anode , lithium (medication) , oxide , electrode , quantum dot , ion , tin , graphene oxide paper , nanotechnology , chemical engineering , chemistry , metallurgy , medicine , endocrinology , organic chemistry , engineering
Tin‐based electrode s offer high theoretical capacities in lithium ion batteries, but further commercialization is strongly hindered by the poor cycling stability. An in situ reduction method is developed to synthesize SnO 2 quantum dots@graphene oxide. This approach is achieved by the oxidation of Sn 2+ and the reduction of the graphene oxide. At 2 A g −1 , a capacity retention of 86% is obtained even after 2000 cycles.