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 -based materials which need to be calcined in an oxygen-rich atmosphere. In this work, LiNi Co Mn O (NCM811) coated with electronic conductor LaNiO (LNO) crystallites is demonstrated for the first time as fast charging-discharging and high energy cathodes for Li-ion batteries. The LaNiO 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 ) and a significantly improved high rate performance (a discharge specific capacity of 130.62 mAh g 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 coating.