Improving Fast Charging-Discharging Performances of Ni-Rich LiNi(0.8)Co(0.1)Mn(0.1)O(2) Cathode Material by Electronic Conductor LaNiO(3) Crystallites

Fast charging-discharging is one of the important requirements for next-generation high-energy Li-ion batteries, nevertheless, electrons transport in the active oxide materials is limited. Thus, carbon coating of active materials is a common method to supply the routes for electron transport, but it is difficult to synthesize the oxide-carbon composite for LiNiO(2)-based materials which need to be calcined in an oxygen-rich atmosphere. In this work, LiNi(0.8)Co(0.1)Mn(0.1)O(2) (NCM811) coated with electronic conductor LaNiO(3) (LNO) crystallites is demonstrated for the first time as fast charging-discharging and high energy cathodes for Li-ion batteries. The LaNiO(3) succeeds in providing an exceptional fast charging-discharging behavior and initial coulombic efficiency in comparison with pristine NCM811. Consequently, the NCM811@3LNO electrode presents a higher capacity at 0.1 C (approximately 246 mAh g(−1)) and a significantly improved high rate performance (a discharge specific capacity of 130.62 mAh g(−1) at 10 C), twice that of pristine NCM811. Additionally, cycling stability is also improved for the composite material. This work provides a new possibility of active oxide cathodes for high energy/power Li-ion batteries by electronic conductor LaNiO(3) coating.