O3-type layered Ni-rich cathode: synthesis and electrochemical characterization
DOI:
https://doi.org/10.51316/jca.2021.123Keywords:
Cathode material, diffusion coefficient, Na-ion batteries, Ni-rich, O3-typeAbstract
Ni-rich layered oxides are currently the state-of-the-art material of Lithium-ion batteries due to the balance between the cost, power and energy density. In this work, Ni-rich O3-type NaxNi0.76Mn0.14Co0.10O2.04 (NMC) material was synthesized by the conventional solid-state reaction and investigated as a cathode material for sodium-ion batteries. Rietveld refinement shows that the material is high purity O3-type layered oxide of >91%. In the charge/discharge test, the material was provided the reversible capacity of 156 mAh.g-1 initially at 0.1 C with 50% capacity retention after 50 cycles in the voltage range of 2.0 – 4.2 V. In addition, this material also demonstrates great rate-capability with the discharge capacity of 50 mAh.g-1 even at 5 C. Therefore, NMC material could be a promising candidate for high energy sodium-ion batteries.
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Viet Nam National University Ho Chi Minh City
Grant numbers B2020-18-06
