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- W2790277072 abstract "Ni-rich layered oxides (LiNi1-xMxO2, M = Co, Mn, Al, etc., x < 0.5) are demonstrated as practical cathode materials for high-energy and high-power lithium ion batteries. However, various synthetic factors affect the degree of the structural ordering of layered LiNi1-xMxO2 oxides and their electrochemical lithium storage performances. Herein, we intentionally evaluate the transition metal precursor effects on manipulating the structural ordering and associated electrochemical performances of the Ni-rich LiNi0.8Co0.2O2 cathode material. The transition metal precursor in a special phase of carbonate hydroxide hydrate, i.e., Ni0.8Co0.2(CO3)1-a(OH)2a·bH2O together with a tridimensional network structure is demonstrated as the desirable precursor as compared with different contrasts. The resulting LiNi0.8Co0.2O2 cathode material shows significantly enhanced ordered layered structure and reveals remarkable high-rate capability along with excellent cycling stability. The LiNi0.8Co0.2O2 cathodes can deliver 195, 148 and 128 mAh g−1 at 0.1, 1 and 5 C rates (1 C = 200 mA g−1) and retain 95% of the initial discharge capacity after 100 electrochemical cycles at 1 C and 72% after 500 cycles at 5 C, respectively. This work sheds lights on understanding transition metal precursor effects on the synthetic control and maximizing electrochemical performances of Ni-rich layered cathode materials for high-rate lithium ion batteries." @default.
- W2790277072 created "2018-03-29" @default.
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- W2790277072 date "2018-03-01" @default.
- W2790277072 modified "2023-10-12" @default.
- W2790277072 title "Precursor effects on structural ordering and electrochemical performances of Ni-rich layered LiNi0.8Co0.2O2 cathode materials for high-rate lithium ion batteries" @default.
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- W2790277072 doi "https://doi.org/10.1016/j.electacta.2018.02.027" @default.
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