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A highly dispersed flaky LiNi0.5Mn1.5O4 has been successfully prepared using one-step filter paper assisted templated method. The phase structures of the products were investigated by X-ray powder diffraction (XRD) and infrared spectroscopy (FT-IR) techniques. The micro morphologies of the products were observed by scanning electron microscopy (SEM). The electrochemical performances were studied by galvanostatic charge-discharge testing, cyclic voltammetry(CV) and electrochemical impedance spectroscopy (EIS). The results show that both of the LiNi0.5Mn1.5O4 prepared by filter paper assisted templated method (LNMO-FP) and the non-templated LiNi0.5Mn1.5O4 (LNMO) exhibit a high degree of ordered space group. The LNMO-FP shows a thin flake micro morphology, which consists of highly dispersed and well crystallined grains. In contrast, the LNMO sample dispays a badly agglomerate morphology. Moreover, the electrochemical performances of the LNMO-FP are obviously improved compared with the LNMO including both cycling stability and rate capability. It is because that the LNMO-FP sample has higher crystallinity, larger diffusion coefficients of Li + and lower polarization.

Template Synthesis of Highly Dispersed LiNi0.5Mn1.5O4 Thin Flakes with Improved Electrochemical Performance using Filter Paper