通过加热回流-喷雾干燥-高温煅烧三步法制备了包覆碳的纯相Li2MnSiO4锂离子电池正极材料,研究了回流时间对材料性能的影响.通过XRD、SEM、TEM和电化学测试对Li2MnSiO4材料的结构、形貌及电化学性能进行了测试和表征.结果表明,当电流密度为30mA/g时,所制备的材料首次放电容量达189.1mAh/g；当电流密度为300mA/g时,首次放电容量达132.9mAh/g,经过40次循环,保持了首次放电容量的55.6％.
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