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电化学  2011 

包覆碳掺CoLiFePO4正极的电化学性能研究

, PP. 334-338

Keywords: 锂离子电池,LiFePO4,碳包覆,Co掺杂,颗粒大小

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Abstract:

应用水热法在200oC下合成了橄榄石结构LiFePO4正极材料,合成过程中添加蔗糖作为包覆用碳源,并同时掺Co.实验表明,包覆碳掺Co能更有效地改善LiFePO4电极的电化学性能.样品可后退火处理,400oC退火LiFePO4样品结晶度和颗粒尺寸均影响了其电化学性能,包覆碳掺CoLiFePO4样品可使颗粒细化,改善电极倍率性能.

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