摘要
本文采用溶胶-凝胶法,以柠檬酸、EDTA和草酸为络合剂制备了LiFePO4,经XRD表征证明所得产品为橄榄石型磷酸铁锂。以放电曲线、循环寿命和电化学阻抗谱研究了LiFePO4的电化学性能,发现以柠檬酸为络合剂制备的LiFePO4的电化学性能最好。
In this article,LiFePO4 was synthesized via a sol-gel method with citric acid, EDTA and oxalic acid chelator, respectively, the olivine structure lithium iron phosphate has been characterized by X-ray diffraction, and electrochemical properties were studied by discharge curves, cycle life and electrochemical impedance spectroscopy. It was found that the electrochemical properties of LiFePO4 synthesized by citric acid chelator is the best among all the synthesized material.
出处
《化学工程师》
CAS
2009年第6期24-26,44,共4页
Chemical Engineer
关键词
锂离子电池
磷酸铁锂
溶胶凝胶
柠檬酸
lithium iron batteries
lithium iron phosphate
sol-gel method
citric acid
