Improving the Thermal Stability of NMC 622 Li-Ion Battery Cathodes through Doping During Coprecipitation

• DOI: 10.1021/acsami.0c01448
• Publication Date: 2020-04-02T17:43:45Z
• Authors: Albert L. Lipson; Jessica L. Durham; Michael LeResche; Ismael Abu-Baker; Michael J. Murphy; Timothy T. Fister; Lixin Wang; Fu Zhou; Lei Liu; Kitae Kim; Derek Johnson
• Keywords: Coprecipitation; Thermal Stability

Increasing the Ni content of LiNixMnyCo1-x-yO2 (NMC) cathodes can increase capacity, but additional stability is needed to improve safety and longevity characteristics. In order achieve this improved stability, Mg Zr were added during coprecipitation uniformly dope final cathode material. These dopants reduced capacity material some extent, depending on concentration calcination temperature. However, these impart substantial stabilization. It was found that degree stabilization strongly dependent temperature addition, we used synchrotron X-ray diffraction thermal breakdown better understand why different impact confirm effects dopants.