| 摘要 |
A method for synthesizing a mixture of epsil-SVO (Ag2V4O11) and gamma-SVO (Ag1.6V4O10.8) by a two-step raw materials mixing process, is described. gamma-SVO is the preferred SVO in terms of electrochemical performance, such as reduced Rdc growth and reduced or eliminated voltage delay. On the other hand, epsil-SVO has slightly higher volumetric capacity than y-SVO. AgVO3 is an undesirable component in Li/SVO cell cathodes because it causes increased Rdc growth and larger voltage delay in comparison to the pure product materials. According to the present invention, a mixture of epsil-SVO (0-100%)+gamma-SVO (100-0%) as a cathode active material in lithium cells is preferred.
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