Journal of Industrial Technology (산업기술연구)

Kangwon National University, Institute of Industrial Technology (강원대학교 산업기술연구소)
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Highly stabilized microstructure and excellent electrochemical performances of Ni-rich LiNi0.9Co0.05Mn0.05O2 cathode via La modification

La 개질을 통한 Ni-rich LiNi0.9Co0.05Mn0.05O2 양극재의 고도로 안정화된 미세구조 및 우수한 전기화학적 성능

  • Seung-Hwan, Lee (Department of Materials Science and Engineering, Kangwon National University)
  • Received : 2022.10.04
  • Accepted : 2022.11.30
  • Published : 2022.12.31
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Abstract

Although the mileage of electric vehicles can be increased based on the excellent energy density of the LiNi0.9Co0.05Mn0.05O2, it is known that the reason for limiting its use is the low lifespan and poor surface stability due to the structural deformation of the LiNi0.9Co0.05Mn0.05O2. To improve the structural stability of LiNi0.9Co0.05Mn0.05O2, electrochemical performance is improved by La coating on the surface. La-modified LiNi0.9Co0.05Mn0.05O2 shows an initial capacity of 210.6 mAh/g, a capacity retention rate of 89.9 % after 50 cycles, and a retention rate of 52.5% at 6.0 C. These are superior performances than the pristine sample, because the structural stability of the LiNi0.9Co0.05Mn0.05O2 cathode is improved by the La coating.

Keywords

Acknowledgement

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2021R1F1A1055979). Following are results of a study on the "Leaders in INdustry-university Cooperation +" Project, supported by the Ministry of Education and National Research Foundation of Korea.

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