| 摘要 |
<p>A rechargeable electrochemical device composed of a negative electrode (4) which comprises an alkali metal as an active material, a non-aqueous electrolyte (6), and a positive electrode (1). The positive electrode (1) is composed of an oxide of chromium and vanadium represented by the general formula CrxV2(1-x)O¿5-(2+y)x? (wherein, 0.2<=x<=0.9, 0.1<=y<=1.0). The rechargeable electrochemical device offers a high discharge voltage, a large discharge capacity, linear discharge voltage, and the capacity to withstand over-charging.</p> |
