Influence of 1-D Nano rod structure β-MnO ₂ on electrochemical properties of lithium iron phosphate

Nano structure β-MnO ₂ is successfully prepared via hydrothermal method, and dopes with LiFePO ₄/C composite compounds. The presence of the β-MnO ₂ doping is ascertained with the pine needle liked nano rods mixed with LiFePO ₄/C particles by scanning electron microscopy (SEM). The doped β-MnO ₂ does not affect the crystal structure of the LiFePO ₄ core, as determined by X-ray diffraction (XRD). The β-MnO ₂ doping can remarkably improve the interfacial resistance and the electrochemical performance of the cell. The β-MnO ₂ doping LiFePO ₄/C has a high discharge capacity of 165 mAh g ^-1 at C/10. This improvement may be due to the amelioration of the electrochemical dynamics on the LiFePO ₄ electrode/electrolyte interface resulting from the effects of the 1-D nano rod structure β-MnO ₂.