摘要
Li[Ni0.6Co0.2Mn0.2]O2(NCM622)is one of the best commercialized cathodes in the battery field.However,poor cyclability at relatively high temperature hinders its multiple usages.Here,operando tests were performed to investigate the phase transitions and electron/ion transfer process of lavered NCM622 at 25 and 55℃.The identified spinel structure resulting in the poor cyclability at 55℃ guides the commercialization of batteries at high temperature.
基金
Supported by the Project of the Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory,China(No.XH12020-003)
the National Natural Science Foundation of China(No.51521001)
the National Key Research and Development Program of China(No.2016YFA0202603)
the Fundamental Rescarch Funds for the Central Universities of China(No.WUT:205201019)。
