Published in
Royal Society of Chemistry, Journal of Materials Chemistry A: materials for energy and sustainability, 25(8), p. 12424-12435, 2020
DOI: 10.1039/d0ta03979a
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The origin of heavy element doping to relieve the lattice thermal vibration of layered materials for high energy density Li ion cathodes
Journal article published in 2020 by
Ruirui Zhao 
,
Jiliang Zhang,
Gi-Hyeok Lee ,
Kai Zhang,
Vincent Wing-Hei Lau ,
Jey-Jau Lee,
Igor Moudrakovski ,
Yue-Lin Yang,
Feng Zou,
Mihui Park,
I.-Ming Hung,
Yong-Mook Kang
,
Jiliang Zhang,
Gi-Hyeok Lee ,
Kai Zhang,
Vincent Wing-Hei Lau ,
Jey-Jau Lee,
Igor Moudrakovski ,
Yue-Lin Yang,
Feng Zou,
Mihui Park,
I.-Ming Hung,
Yong-Mook Kang
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Abstract
We report an effective strategy to inhibit the phase transition of LiCoO2 from hexagonal layered to cubic spinel during delithiation. The small thermal vibration amplitude of the Sn dopant helps pin the lattice vibration, stabilizing CoO6 octahedra during charge/discharge.