Research on Modification of Ni-rich Lithium Ion Battery by MgO

Rich Nickel transition metal oxides with layered structure are promising cathode materials for LIBs. However, their poor cycling performance limits the expansion of their applications. In my article MgO was used to modify the Ni-rich materials. The crystal structure of the Rich Nickel materials was studied by X-Ray Diffraction(XRD) and Scanning Electron Microscope(SEM). The electro-chemical performance was studied by charge-discharge test. Our results showed that, in the charge/discharge measurement, the electrochemical performance of MgO modified sample is better than unmodified sample. As well as when the MgO radio was 2%, the sample showed the optimum properties. The initial discharge capacity was 184 mAh/g and 155 mAh/g at 0.1C and at 1C, respectively. After 100cycles at 1C, the discharge capacity kept 90% at 1C. (paper)