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Optimized electrochemical performance of Ni rich LiNi0.91Co0.06Mn0.03O2 cathodes for high-energy lithium ion batteries.

ABSTRACT: We report high electrochemical performances of LiNi0.91Co0.06Mn0.03O2 cathode material for high-energy lithium ion batteries. LiNi0.91Co0.06Mn0.03O2 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 LiNi0.91Co0.06Mn0.03O2. The electrochemical performances are improved with increasing sintering temperature up to an optimal sintering temperature. The LiNi0.91Co0.06Mn0.03O2 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 LiNi0.91Co0.06Mn0.03O2 sintered at 660?°C can be regarded as a next generation cathode.

SUBMITTER: Lee SH 

PROVIDER: S-EPMC6586611 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature

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Optimized electrochemical performance of Ni rich LiNi<sub>0.91</sub>Co<sub>0.06</sub>Mn<sub>0.03</sub>O<sub>2</sub> cathodes for high-energy lithium ion batteries.

Lee Seung-Hwan SH   Lee Seul S   Jin Bong-Soo BS   Kim Hyun-Soo HS  

Scientific reports 20190620 1

We report high electrochemical performances of LiNi<sub>0.91</sub>Co<sub>0.06</sub>Mn<sub>0.03</sub>O<sub>2</sub> cathode material for high-energy lithium ion batteries. LiNi<sub>0.91</sub>Co<sub>0.06</sub>Mn<sub>0.03</sub>O<sub>2</sub> 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<sub>0.91</sub>Co<sub>0.06</sub>Mn<sub>0.03</sub>O<sub>2</  ...[more]

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