1. Regeneration of degraded LiNi0.5Co0.2Mn0.3O2 from spent lithium ion batteries
- Author
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Yuan-Cheng Cao, Guo-Hua Xu, Huiqiang Xu, Jin Guoliang, Qi Cheng, Ling-Ping Yue, Ping Lou, Shun Tang, Long Li, and Heming Deng
- Subjects
Materials science ,General Chemical Engineering ,Active particles ,General Engineering ,General Physics and Astronomy ,chemistry.chemical_element ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Electrochemistry ,01 natural sciences ,Cathode ,Energy storage ,0104 chemical sciences ,law.invention ,Ion ,chemistry ,Chemical engineering ,law ,Phase (matter) ,Degradation (geology) ,General Materials Science ,Lithium ,0210 nano-technology - Abstract
LiNi0.5Co0.2Mn0.3O2 is becoming the dominating cathode material in lithium ion batteries, which have degradation issues after cycling due to Li+ loss and phase changes. But there is no effective method to solve this problem. Here, we offer an innovative method to regenerate degraded nickel-manganese-cobalt cathode particles to obtain new active particles. The results show that the regeneration materials display the discharge capacities of 162.0 mAh/g at 0.1 C. When cycled at 1 C, a highly reversible discharge capacity of 128.6 mAh/g can be obtained after 100 cycles with capacity retention of 91.9%, which is comparable with commercial LiNi0.5Co0.2Mn0.3O2.
- Published
- 2020