A facile method to enhance electrochemical performance of high-nickel cathode material Li(Ni0.8Co0.1Mn0.1)O-2 via Ti doping

作者：Li, Jiawei; Li, Ying^*; Guo, Yongnan; Lv, Jiale; Yi, Wentao; Ma, Peihua

来源：Journal of Materials Science: Materials in Electronics , 2018, 29(13): 10702-10708.

DOI：10.1007/s10854-018-9093-1

• LITHIUM ION BATTERIES
• CYCLING STABILITY
• LINI1/3CO1/3MN1/3O2
• LINI0.8CO0.15AL0.05O2
• LINI0.8CO0.1MN0.1O2
• IMPROVEMENT
• NANOSCALE
• PARTICLES
• STORAGE

The cycle stability of Li(Ni0.8Co0.1Mn0.1)O-2 is enhanced obviously by titanium doping via a facile solid-state method. The property of crystal structure is evaluated by XRD, which illustrates the samples possessed a layered alpha-NaFeO2 structure with R-3m space group. According to the charge/discharge studies, the capacity retention of pristine sample is around 51% after 125 cycles at 5 C, and the sample with Ti dopant displays a good cyclic stability, after 125 cycles, the capacity retention increases to 75% under 5 C, suggesting it could be possibly applied in fast charge Lithium-ion battery area. The superb electrochemical performance might be attributed to the Ti4+ occupy the layer structure to broaden the Lithium-ion channel, which is benefit to lithium intercalation and deintercalation during cycling.

• 出版日期2018-7
• 单位枣庄学院; 东北大学; 湖南大学