Gradient-morph LiCoO2 single crystals with stabilized energy density above 3400 W h L−1

作者：Zhi Zhu; Daiwei Yu; Zhe Shi; Rui Gao; Xianghui Xiao; Iradwikanari Waluyo; Mingyuan Ge; Yanhao Dong; Weijiang Xue; Guiyin Xu; Wah-Keat Lee; Adrian Hunt; Ju Li

来源：Energy & Environmental Science, 2020, 13(6): 1865-1878.

DOI：10.1039/D0EE00231C

The cycling stability of LiCoO2 under high voltages (>5 V) was plagued by hybrid anion- and cation-redox (HACR) induced oxygen escape and uncontrolled phase collapse. With DEMS and in situ XANES mapping at the NSLS-II, we demonstrate that oxygen escape triggers irreversible transformations into “bad” surfa

• 单位
  Brookhaven National Laboratory