Optimized electrochemical performance of Ni rich LiNi(0.91)Co(0.06)Mn(0.03)O(2) cathodes for high-energy lithium ion batteries

We report high electrochemical performances of LiNi(0.91)Co(0.06)Mn(0.03)O(2) cathode material for high-energy lithium ion batteries. LiNi(0.91)Co(0.06)Mn(0.03)O(2) is synthesized at various sintering temperatures (640~740 °C). The sintering temperatures affect crystallinity and structural stability...

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Detalles Bibliográficos
Autores principales: Lee, Seung-Hwan, Lee, Seul, Jin, Bong-Soo, Kim, Hyun-Soo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6586611/
https://www.ncbi.nlm.nih.gov/pubmed/31222121
http://dx.doi.org/10.1038/s41598-019-45531-2
Descripción
Sumario:We report high electrochemical performances of LiNi(0.91)Co(0.06)Mn(0.03)O(2) cathode material for high-energy lithium ion batteries. LiNi(0.91)Co(0.06)Mn(0.03)O(2) is synthesized at various sintering temperatures (640~740 °C). The sintering temperatures affect crystallinity and structural stability, which play an important role in electrochemical performances of LiNi(0.91)Co(0.06)Mn(0.03)O(2). The electrochemical performances are improved with increasing sintering temperature up to an optimal sintering temperature. The LiNi(0.91)Co(0.06)Mn(0.03)O(2) sintered at 660 °C shows remarkably excellent performances such as initial discharge capacity of 211.5 mAh/g at 0.1 C, cyclability of 85.3% after 70 cycles at 0.5 C and rate capability of 90.6% at 2 C as compared to 0.5 C. These results validate that LiNi(0.91)Co(0.06)Mn(0.03)O(2) sintered at 660 °C can be regarded as a next generation cathode.

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