采用水热法制备层状LiMnO2,并对其进行Ti掺杂制备出LiMn1-xTixO2(x=0.01,0.02,0.03).用XRD和电化学方法研究了Ti掺杂对LiMnO2的结构及电化学性能的影响.结果表明,掺杂Ti4+在降低材料结晶度的同时,依旧保持了LiMnO2的层状结构.在室温下以0.1C放电,当LiMn1-xTix O2,x=0.02,时,该材料具有最大放电比容量184.52 mA·h/g且20次循环后容量保持率为93.7％.循环伏安和交流阻抗测试显示材料LiMn0.98Ti0.02O2在2.0～4.5 V下充放电的可逆性优于LiMnO2,极化电阻明显小于未掺杂样品.
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