Amorphous Vanadium Oxide/Carbon Composite Positive Electrode for Rechargeable Aluminum Battery.
Amorphous vanadium oxide/carbon composite (V2O5/C) was first applied to the positive electrode active material for rechargeable aluminum batteries. Electrochemical properties of V2O5/C were investigated by cyclic voltammetry and charge-discharge tests. Reversible reduction/oxidation peaks were observed for the V2O5/C electrode and the rechargeable aluminum cell showed the maximum discharge capacity over 200 mAh g(-1) in the first discharging. The XPS analyses after discharging and the following charging exhibited that the redox of vanadium ion in the V2O5/C active material occurred during discharging and charging, and the average valence of V changed between 4.14 and 4.85.
Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University , Sakai, Osaka 599-8531, Japan.
Masanobu
M
Chiku
Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University , Sakai, Osaka 599-8531, Japan.
Hiroki
H
Takeda
Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University , Sakai, Osaka 599-8531, Japan.
Shota
S
Matsumura
Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University , Sakai, Osaka 599-8531, Japan.
Eiji
E
Higuchi
Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University , Sakai, Osaka 599-8531, Japan.
Hiroshi
H
Inoue
aluminum; amorphous vanadium oxide; dipropylsulfone; multivalent cation battery; rechargeable aluminum battery; rechargeable battery; vanadium oxide