关键词:
溶剂热合成
磷酸铁锂
二元溶剂
纳米级
电化学性能
可控
形貌
循环性能
摘要:
LiFePO4(LFP) nanobars,microplates and nanorods have been selectively synthesized via a solvothermal method in a water-ethylene glycol(EG) binary solvent with H3PO4,LiOH·H2O,and FeSO4·7H2O as starting *** morphology and size of the as-obtained LFP products can be deliberately controlled by varying the volume ratio of EG to *** formation mechanism and electrochemical properties of different LFP morphologies have been *** carbon coating,the Li-ion diffusion coefficients of LFP nanorods,nanobars and micro-plates are 2.58×10-9,2.91×10-10,and 7.22×10-10 cm2 s-1,*** the carbon-coated nanorods,excellent rate capability and cyclability were *** 5 C,the capacity was 141 mAh g-1 for the first cycle and maintained 120 mAh g-1 after 100 cycles;at 10 C,the capacity was still as high as 132 mAh g-1.