Articles written in Bulletin of Materials Science

    • Enhanced electrochemistry of AlPO$_4$ nano-layer-wrapped LiMn$_2$O$_4$ cathode material for an aqueous rechargeable lithium-ion battery


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      Cubic spinel LiMn$_2$O$_4$ (LMO) nanomaterial was synthesized by the solid-state method via double-step calcinations process, and AlPO$_4$ (AlP) nano-layer is used to modify the spinel LiMn$_2$O$_4$ (LMO) electrode material, which was manufactured using a chemical deposition solution process. The cubic spinel crystal structure of LiMn$_2$O$_4$ wrapped by the AlPO$_4$ layer was verified by structural analysis (XRD) and morphological analysis (FESEM and HRTEM). TEM result indicates that the AlPO$_4$ nano-layer does not affect the bulk structure of pristine LiMn$_2$O$_4$ material. The electrochemical results demonstrated that the AlPO$_4$-wrapped LiMn$_2$O$_4$ (AlP-LMO) cathode can still deliver its initial discharge capacity of 147.6 mAh g$^{-1}$, whereas the pristine LiMn$_2$O$_4$ cathode has an initial discharge capacity of 116.4 mAh g$^{-1}$ at 0.5 C rate. AlPO$_4$ nano coating can effectively prevent the increase of the charge transfer resistance during charge–discharge process and improve the electrochemical performance of AlP-LMO electrode due to the protective nature of AlPO$_4$ nano-layer.

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