利用碳球作为模板,通过与异丙醇氧钒的溶剂热反应制备了五氧化二钒(V2O5)空心球.采用扫描电子显微镜(SEM)和透射电子显微镜(TEM)等技术手段对V2O5空心球进行了表征.实验结果表明,V2O5空心球的直径约为1.5 μm,壁厚约100 nm.将V2O5空心球作为镁二次电池的正极,在0.2C充放电条件下,材料的首次放电比容量达140 mA·h/g,经20次循环后容量为110 mA·h/g.
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