Lithium intercalation in α′-NayV2O5 synthesized via the hydrothermal route
作者： L. Bouhedja , S. Castro-Garcia , J. Livage , C. Julien
DOI: 10.1007/BF02375950
关键词:
摘要: Vanadium bronzes NayV2O5 are synthesized via the hydrothermal route from a mixture of V2O5 and NaOH in presence reducing agent. Fine crystalline powders made needle-like particles obtained that exhibit layered structure typical α′-NayV2O5 phase (y≈1). Electron delocalization arises hopping process unpaired electrons between V4+ V5+. Alkaline cations intercalated oxide layers discharge curves show up to one Li+ ion per vanadium can be reversibly inserted [V2O5] 3.3–0.5 V range. Chemical diffusion coefficient Li ions LixNaV2O5 is found dependent on degree intercalation. D+ varies 1×10−10 5×10−10 cm2/s for 0≤×≤2.
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