Journal of Electrochemical Science and Technology

The Korean Electrochemical Society (한국전기화학회)
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The Synthesis of Na0.6Li0.6[Mn0.72Ni0.18Co0.10]O2 and its Electrochemical Performance as Cathode Materials for Li ion Batteries

  • Choi, Mansoo (Decontamination and Decommissioning Research Division, Korea Atomic Energy Research Institute) ;
  • Jo, In-Ho (Battery Research Center, Korea Electrotechnology Research Institute) ;
  • Lee, Sang-Hun (Battery Research Center, Korea Electrotechnology Research Institute) ;
  • Jung, Yang-Il (LWR Fuel Technology Division, Korea Atomic Energy Research Institute) ;
  • Moon, Jei-Kwon (Decontamination and Decommissioning Research Division, Korea Atomic Energy Research Institute) ;
  • Choi, Wang-Kyu (Decontamination and Decommissioning Research Division, Korea Atomic Energy Research Institute)
  • Received : 2015.08.17
  • Accepted : 2015.12.11
  • Published : 2016.12.31
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Abstract

The layered $Na_{0.6}Li_{0.6}[Mn_{0.72}Ni_{0.18}Co_{0.10}]O_2$ composite with well crystalized and high specific capacity is prepared by molten-salt method and using the substitution of Na for Li-ion battery. The effects of annealing temperature, time, Na contents, and electrochemical performance are investigated. In XRD analysis, the substitution of Na-ion resulted in the P2-$Na_{2/3}MO_2$ structure ($Na_{0.70}MO_{2.05}$), which co-exists in the $Na_{0.6}Li_{0.6}[Mn_{0.72}Ni_{0.18}Co_{0.10}]O_2$ composites. The discharge capacities of cathode materials exhibited $284mAhg^{-1}$ with higher initial coulombic efficiency.

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