采用间苯二酚-甲醛辅助溶胶-凝胶法制备了纳米Li2MnSiO4/C正极材料,采用X射线衍射(XRD)、扫描电镜(SEM)和恒流充放电测试等方法对材料的结构、形貌以及电化学性能进行了分析和表征.结果表明,所制备的样品属于正交晶系Pmn21空间群,物相纯度很高,颗粒尺寸细小(50 nm左右)且分布均匀,并具有良好的电化学性能,首次放电比容量为105.7 mAh/g,50次循环后容量保持率高达90.7％.XRD图谱显示,经过充放电循环后,Li2MnSiO4能始终保持稳定的晶体结构,表明间苯二酚-甲醛在烧结过程中形成的网络包覆碳层不仅提高了材料的电子电导率,还维持了材料结构的稳定.
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