Effects of oxygen vacancies on the electrochemical performance of tin oxide
Na Li(Chinese Academy of Sciences), Kui Du(Chinese Academy of Sciences), Gang Liu(Chinese Academy of Sciences), Yingpeng Xie(Chinese Academy of Sciences), Guangmin Zhou(Chinese Academy of Sciences), Jing Zhu(Tsinghua University), Feng Li(Chinese Academy of Sciences), Hui–Ming Cheng(Chinese Academy of Sciences)
Cited by 156
Abstract
Using an aberration-corrected transmission electron microscope, we observed the oxygen vacancies, profiled the concentration in the SnO2−δ nanocrystals on an atomic scale, and estimated the amount of oxygen vacancies to be ca. 3.3 atom%. The SnO2−δ nanocrystals show much improved initial Coulombic efficiency, rate capability and specific capacity compared with stoichiometric SnO2 when used as an anode material for lithium ion batteries.
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