锂离子电池正极材料磷酸锰锂研究进展

摘要

锂离子电池正极材料磷酸锰锂(LiMnPO4)具有结构稳定、能量密度高、成本低以及环境友好等特点,是一种十分具有应用前景的锂离子电池正极材料.然而,该材料电子电导率低且离子扩散慢,导致其电化学活性较差,制约了磷酸锰锂材料及其电池的发展.对近年来改进锂离子电池正极材料磷酸锰锂电化学性能的研究,包括磷酸锰锂正极材料的改性研究及与其他材料复合/混合研究进行了综述.%Lithium manganese phosphate (LiMnPO4) is one of the most promising cathode materials for rechargeable lithium batteries due to its stable structure,high energy density,low cost and environmental friendly.However,the low electronic conductivity and slow diffusion of lithium ions in LiMnPO4 lead to its poor electrochemical activity.The research progress to improve the performance of LiMnPO4 cathode materials for Li-ion batteries,including modification research and compounding/blending with other cathodes was reviewed.