Abstract
Rechargeable magnesium batteries have attracted attention for use in the nextgeneration power storage applications. V2O5 xerogel, which has a high capacity, is expected to be an active cathode material for magnesium rechargeable batteries. However, it faces the problem of degradation due to desorption of structural water. A vanadium pentoxide xerogel containing sulfur (S-V2O5 gel) was prepared by a new composition process and evaluated by structural analysis, and its electrode performance was analyzed. Structural analysis by X-ray diffraction, differential thermal analysis, and scanning electron microscopy showed that the bulk S-V2O5 gel adopted a V2O5 xerogel-like structure with a layer structure in a stable planar direction with added sulfur, and that the surface was a reformed hard amorphous structure due to treatment with a low-temperature plasma generated using carbon felt (CF-MWP). Charge-discharge tests revealed a specific capacity of 450 mAh g-1, and cyclic voltammetry was almost perfectly stabilized after the second cycle. Keywords: Cathode Material, microwave, rechargeable magnesium battery, sulfur doped, vanadium pentoxide, xerogel.
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