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采用Sol-gel技术及溶剂替换工艺,以工业V2O5粉末为原料,通过过氧化法在常压下制备出新型纳米结构V10O24·12H2O材料,对其结构和交流阻抗特性进行了研究.结果表明,V10O24·12H2O材料同时存在V5+和V4+,具有层状结构,呈非晶态.提出样品电极的等效电路并进行拟合,拟合值与实验值较吻合.系统分析了相关参数的物理意义及引起参数变化的可能原因,结果表明,电池内阻较小,有利于大电流放电.该制备方法操作简单、反应条件温和且原料价格便宜;V10O24·12H2O材料良好的电化学特性将有可能成为理想的新能源材料.

参考文献

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