Bulk Al-doping effect on structure and electrochemical performance of NCM811 cathode materials

Bulk doping of aluminum ions (Al3+) is promising to solve the problems of poor safety and short cycling life of nickel-rich cathodes. A crucial chelating agent of sodium lactate is found here to realize the best co-precipitation of Al3+ with other transition-metal ions at an atomic level for the first time. The discharge capacity of this cathode is increased by 13.17