Core-Shell-Structured Li[Ni0.87Co0.08Al0.05]O2 Cathode Material for Enhanced Electrochemical Performance and Thermal Stability of Lithium-Ion Batteries

Shin, Ji-Woong; Son, Jong‐Tae

doi:10.3938/jkps.74.53

Cited by 5 publications

(1 citation statement)

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“…In particular, aluminum (Al)-doped LiCMA has a high price competitiveness and discharge capacity and has recently been in the spotlight as a cathode material for mid- to large-sized secondary batteries [ 21 ]. However, LiCMA cathode materials have disadvantages, such as thermal instability due to the collapse of the layered structure during overcharging, low lifespan and rate characteristics, and an increase in the internal impedance as the cycle progresses [ 22 ]. Many ongoing studies have aimed to overcome these limitations, and metal doping or surface coating is the most promising method [ 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Performance of Layer-Structured Ni0.8Co0.1Mn0.1O2 Cathode Active Materials Synthesized by Carbonate Co-Precipitation

et al. 2022

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The layered Ni-rich NiCoMn (NCM)-based cathode active material Li[NixCo(1-x)/2Mn(1-x)/2]O2 (x ≥ 0.6) has the advantages of high energy density and price competitiveness over an LiCoO2-based material. Additionally, NCM is beneficial in terms of its increasing reversible discharge capacity with the increase in Ni content; however, stable electrochemical performance has not been readily achieved because of the cation mixing that occurs during its synthesis. In this study, various layer-structured Li1.0[Ni0.8Co0.1Mn0.1]O2 materials were synthesized, and their electrochemical performances were investigated. A NiCoMnCO3 precursor, prepared using carbonate co-precipitation with Li2CO3 as the lithium source and having a sintering temperature of 850 °C, sintering time of 25 h, and metal to Li molar ratio of 1.00–1.05 were found to be the optimal parameters/conditions for the preparation of Li1.0[Ni0.8Co0.1Mn0.1]O2. The material exhibited a discharge capacity of 160 mAhg−1 and capacity recovery rate of 95.56% (from a 5.0–0.1 C-rate).

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