Al-Zr co-doped lithium cobaltate cathode material was prepared by high temperature solid phase method.The cyclic stability of lithium cobaltate cathode material at high potential and the effects of final firing temperature and final firing holding time on the morphology and electrochemical properties of the material were investigated.The morphology and electrochemical properties of the materials were characterized by scanning electron microscopy,constant current charge-discharge and AC impedance techniques.The results showed that the material prepared under the condition of 1000℃ final firing temperature and 16h holding time exhibited uniform particle dispersion with particle sizes ranging from 1 to 5μm.The specific capacity of the first coil was 187.4mAh/g at 0.1C current density,and the capacity retention rate was 91.3% after 50 cycles,with stable circulation performance and high capacity at high potential.
Zhang Jianfeng, Liu Wei, Liu Hang, Xu Zhenkai, Lin Duojia, Xia Xin
. Preparation and electrochemical properties of Al-Zr co-doped lithium cobaltate[J]. New Chemical Materials, 2023
, 51(10)
: 173
-178
.
DOI: 10.19817/j.cnki.issn1006-3536.2023.10.017
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