Synthesis of vanadium pentoxide powders with enhanced surface-area for electrochemical capacitors
- Publication Type:
- Journal Article
- Citation:
- Journal of Power Sources, 2006, 162 (2 SPEC. ISS.), pp. 1451 - 1454
- Issue Date:
- 2006-11-22
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Single-phase, chemically pure vanadium pentoxide (V2O5) powders are prepared by co-precipitation and further calcination at 300 °C. The materials obtained are agglomerated in sub-micron particles, and BET analysis shows that the as-prepared V2O5 powders have a high specific surface-area of 41 m2 g-1. V2O5 shows the highest capacitance in 2 M KCl electrolyte when compared with other electrolytes such as 2 M NaCl and 2 M LiCl. It yields a maximum specific capacitance of 262 F g-1. The higher specific surface-area may be the reason for the high capacitance compared with previously published results. © 2006 Elsevier B.V. All rights reserved.
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