Research based on graphene oxide composite with LiFe_0.97Ni_0.03PO₄

LiFe_0.97Ni_0.03PO₄ composited with different contents of GO were prepared as lithium-ion batteries by carbothermal reduction methods, named as LFNP/G-x (x stands for GO contents). The study investigates the impact of varying composite ratios on electrochemical performance and crystal structure. The results showed that appropriate compounding with GO had a positive effect on cycling and rate properties. This is attributed to the fact that GO composite can increase LiFe_0.97Ni_0.03PO₄ surface activity and make them more uniformly dispersed, which enhances the material’s specific surface and improves its electrical conductivity. In particular, the charge–discharge capacity of LFNP/G-0.05 is 161 mAh g⁻¹ at 0.1 C. After 100 turns, the capacity retention of materials is 93.9%. Hence, incorporating an optimal quantity of GO offers a novel approach to enhance the capability of LiFe_0.97Ni_0.03PO₄ materials.