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电化学  2012 

脉冲激光沉积LiNi0.5Mn0.5O2薄膜正极性能

, PP. 279-285

Keywords: 脉冲激光沉积,LiNi0.5Mn0.5O2,薄膜锂离子电池

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Abstract:

高能量密度、功率密度和温度稳定性的全固态薄膜锂离子电池是微电子器件的理想电源.开发新型的大比容量正极薄膜材料是解决问题的关键之一.与LiCoO2正极相比,层状结构的LiNi0.5Mn0.5O2有更高的可逆比容量和结构稳定性.本文应用脉冲激光沉积法制备LiNi0.5Mn0.5O2沉积薄膜,研究了衬底材料、温度对薄膜的微观结构、表面形貌及组分的影响.由LiNi0.5Mn0.5O2电极组装半电池,研究了薄膜的电化学性能与晶体结构、表面形貌及组分间的关系,表征了LiNi0.5Mn0.5O2沉积薄膜不同充电截止电压的循环稳定性及倍率性能,讨论了LiNi0.5Mn0.5O2薄膜的结构特点.

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