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Introducing an Efficient and Eco-Friendly Spray-Drying Process for the Synthesis of NCM Precursor for Lithium-ion Batteries

  • Hye-Jin Park (Battery Research Division, Korea Electrotechnology Research Institute (KERI)) ;
  • Seong-Ju Sim (Battery Research Division, Korea Electrotechnology Research Institute (KERI)) ;
  • Bong-Soo Jin (Battery Research Division, Korea Electrotechnology Research Institute (KERI)) ;
  • Hyun-Soo Kim (Battery Research Division, Korea Electrotechnology Research Institute (KERI))
  • 투고 : 2023.08.22
  • 심사 : 2024.10.09
  • 발행 : 2024.02.29

초록

Ni-rich cathode is one of the promising candidates for high-energy lithium-ion battery applications. Due to its specific capacity, easy industrialization, and good circulation ability, Ni-rich cathode materials have been widely used for lithium-ion batteries. However, due to the limitation of the co-precipitation method, including sewage pollution, and the instability of the long production cycles, developing a new efficient and environmentally friendly synthetic approach is critical. In this study, the Ni0.91Co0.06Mn0.03CO3 precursor powder was successfully synthesized by an efficient spray-drying method using carbonate compounds as a raw material. This Ni0.91Co0.06Mn0.03CO3 precursor was calcined by mixing with LiOH·H2O (5 wt% excess) at 480℃ for 5 hours and then sintered at two different temperatures (780℃/800℃) for 15 hours under an oxygen atmosphere to complete the cathode active material preparation, which is a key component of lithium-ion batteries. As a result, LiNi0.91Co0.06Mn0.03O2 cathode active material powders were obtained successfully via a simple sintering process on the Ni0.91Co0.06Mn0.03CO3 precursor powder. Furthermore, the obtained LiNi0.91Co0.06Mn0.03O2 cathode active material powders were characterized. Overall, the material sintered at 780℃ shows superior electrochemical performance by delivering a discharge capacity of 190.76 mAh/g at 1st cycle (0.1 C) and excellent capacity retention of 66.80% even after 50 cycles.

키워드

과제정보

This work was supported by the Development Program [20015809, Development of particle shape controlled nickel-based cathode material with high capacity and long cycle life], [20011379, Development of advanced charge acceptance technology for charging power improvement of xEV battery system] funded by the Ministry of Trade, Industry and Energy (MOTIE), Korea.

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