摘要
文章考察了不同压实密度对石墨烯基磷酸铁锂电池的电化学性能的影响,特别是倍率性能影响。实验结果表明:当压实密度为2.2g/cm3时,其倍率性能最为优异,随着压实密度增大,锂电池的氧化反应的可逆性逐渐提高,电化学阻抗逐渐减小,极片电导率逐渐增大。
The effects of different compacting densities on the electrochemical properties of graphene -based LiFePO4 （lithiumiron phosphate） batteries, especially the rate performance, were investigated. The experimental results show that when the compactingdensity is 2.2 g/cm3, the rate performance is the best. With the increase of compacting density, the reversibility of oxidation reactionof lithium battery increases gradually, the electrochemical impedance decreases gradually, and the conductivity of the electrode in-creases gradually.
出处
《科技创新与应用》
2018年第30期13-14,16,共3页
Technology Innovation and Application
关键词
压实密度
石墨烯
磷酸铁锂
电化学性能
compacting density
graphene
lithium iron phosphate （LiFePO4）
electrochemical properties
