Preparation and electrochemical lithium intercalation of V2O5 porous lump with large surface area
この論文をさがす
説明
Abstract A porous V2O5 lump with a very large surface area could be prepared by removal of B2O3 from a melt quenched V2O5–B2O3 binary mixture of 4:1 molar ratio. The surface area reached 34.75 m2 g−1 and a very interesting gathering texture of V2O5 tiny needle crystals was observed with a lot of vacant space for electrolyte solvent to soak in. A lithium rechargeable cell using the porous V2O5 showed superior electrochemical performances with current drain ∼400 μA cm−2 and discharge capacity ∼114 mA hr g−1. Several cycles were carried out between 2 to 4 V limits using the porous samples. However this was not possible when commercially available and only melt quenched V2O5 samples were used. A porous sample was discharged to around x=0.8 in LixV2O5 through α- to e-phases and cycled in the latter range.
収録刊行物
-
- Solid State Ionics
-
Solid State Ionics 99 53-60, 1997-08-01
Elsevier BV