摘要
通过熔盐法制备出粒径较小,尺寸均匀的铁酸镧钙钛矿纳米材料作为锂离子电池负极。电化学测试结果表明循环性能稳定,在200 mA·g^(-1)电流密度下首圈可达700 mAh·g^(-1)左右的比容量,且从5~100圈的过程中保持250 mAh·g^(-1)左右的比容量并且没有下降趋势。倍率性能测试时经过不同电流密度运行10圈最后回到初始电流密度时比容量仍有较大的回复,说明LaFeO3具有较高的化学可逆性。
Preparation of small and uniformly sized lanthanum ferrite perovskite nanomaterials were prepared as negative electrodes for lithium-ion batteries by molten salt method.The electrochemical test results showed that the cycling performance was stable,with a specific capacity of about 700 mAh·g^(-1) in the first cycle at a current density of 200 mA·g^(-1),and a specific capacity of about 250 mAh·g^(-1) was maintained from 5 to 100 cycles without any downward trend.During the rate performance test,after running for 10 cycles at different current densities and finally returning to the initial current density,there was still a significant recovery in specific capacity,indicating that LaFeO_(3) has high chemical reversibility.
作者
张正威
娄正松
ZHANG Zhengwei;LOU Zhengsong(College of Chemistry and Chemical Engineering,Jiangsu University of Technology,Jiangsu Changzhou 231001,China)
出处
《广州化工》
2025年第12期61-64,共4页
GuangZhou Chemical Industry
关键词
铁酸镧
熔盐法
锂离子电池
纳米材料
lanthanum ferrite
molten salt method
lithium ion batteries
nanomaterials
