锂离子电池正极补锂剂研究进展

【摘要】 随着新能源汽车需求的快速增长，锂离子电池的能量密度和循环寿命成为研究的重点方向。在首次充放电过程中，锂离子在负极材料中嵌入，与电解液中的成分发生化学反应生成SEI膜（固体电解质界面膜），损失电池体系中的活性锂。补锂材料作为提高电池首次库仑效率性能的重要化合物，受到了广泛关注。综述了国内外近年来富锂三元材料、富锂二元材料、有机富锂材料等正极补锂剂的研究进展，分析比较其能量密度及稳定性，并探讨补锂剂存在的安全隐患和展望其未来发展前景。更多还原

【Abstract】 With the rapid growth of demand for new energy vehicles,the energy density and cycle life of lithium-ion batteries have become the focus of research. During the first charge and discharge process,lithium ions are embedded in the negative electrode material and chemically react with the components in the electrolyte to form SEI film(solid electrolyte interface membrane),which loses the active lithium in the battery system. As an important compound to improve the first coulomb efficiency of batteries,lithium replenishment materials have received extensive attention. The research progress of lithium-rich terpolymer,Li-rich binary material and organic Li-rich material in recent years is reviewed,and their energy density and stability are analyzed and compared. The safety hazards and future development prospects of lithium supplement are prospected.更多还原