Abstract
Ni-rich cathode materials have high specific capacity and low cost, but they also have several drawbacks, such as high pH and poor cycle stability. In this paper, a simple dry-coat method using MnCO3 was adopted to improve the performance of LiNi0.8Co0.15Al0.05O2 (NCA), which is the first report of its kind. The modified NCA showed a capacity of 193 mAh g− 1 and capacity retention of 98.9% at 1 °C rate after 100 cycles, compared to the corresponding values (195 mAh g− 1 and 94.0%) for the pristine NCA. The pH was reduced from 12.19 to 11.69. Moreover, the storage performance in air and thermal stability in the delithiated state were also improved.
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This work was financially supported by the National Key R&D program of China (2016YFB0100500).
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Cao, C., Zhang, J., **e, X. et al. A novel method for the modification of LiNi0.8Co0.15Al0.05O2 with high cycle stability and low pH. J Solid State Electrochem 23, 1351–1358 (2019). https://doi.org/10.1007/s10008-019-04216-6
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DOI: https://doi.org/10.1007/s10008-019-04216-6