A facile eutectic mixed molten salt method for synthesizing LiNi0.5Co0.2Mn0.3O2 cathode material for lithium-ion batteries

LiNi0.5Co0.2Mn0.3O2 as a kind of layered oxide, has garnered significant interest due to its low cost and facile preparation method. Nevertheless, fast discharge capacity attenuation, poor cycle stability restricts it further application. To optimize its properties, in this paper, a novel eutectic mixed molten salt method is proposed to synthesize LiNi0.5Co0.2Mn0.3O2. The results demonstrate that the LiNi0.5Co0.2Mn0.3O2 obtained through LiOHLiNO3 as eutectic mixed molten salt exhibited exceptional electrochemical properties. It had a reversible capacity of 151.7 mAh & sdot;g 1 after 100 cycles at 0.2 C, with a capacity retention of 89.3%, the discharge capacities of 165.6, 135.8, 121.8 and 111.2 mAh & sdot;g 1 at 0.5, 1.0, 2.0 and 5.0 C, respectively. This study highlights a convenient method for preparing LiNi0.5Co0.2Mn0.3O2 and demonstrates the effectiveness of the eutectic mixed molten salt approach in enhancing electrochemical properties.