CAJ | 학술논문

与LiFePO4相比,单斜结构的磷酸钒锂（Li3V2（PO4）3）具有更高的Li^＋扩散系数和更高的放电电压、能量密度和高的比容量,已成为锂离子电池正极材料的研究热点之一,且被认为是新一代的高容量产业化电池材料。综述了近年来Li3V2（PO4）3的主要合成方法、充放电机理及其改性的研究现状,并且对Li3V2（PO4）3的发展趋势进行了展望。采用球磨辅助碳热还原法制备锂离子正极材料Li3V2（PO4）3,并通过金属离子掺杂技术对Li3V2（PO4）3进行改性。实验结果表明：掺杂少量的Fe后,材料放电容量增大且循环性能更好。
여LiFePO4상비,단사결구적린산범리（Li3V2（PO4）3）구유경고적Li^＋확산계수화경고적방전전압、능량밀도화고적비용량,이성위리리자전지정겁재료적연구열점지일,차피인위시신일대적고용양산업화전지재료。종술료근년래Li3V2（PO4）3적주요합성방법、충방전궤리급기개성적연구현상,병차대Li3V2（PO4）3적발전추세진행료전망。채용구마보조탄열환원법제비리리자정겁재료Li3V2（PO4）3,병통과금속리자참잡기술대Li3V2（PO4）3진행개성。실험결과표명：참잡소량적Fe후,재료방전용량증대차순배성능경호。
Compared with LiFePO4, lithium vanadium phosphate with monoclinic structure （Li3V2（PO4）3） has a higher Li ＋ diffusion coefficient and a higher discharge voltage, energy density and specific capacity. It has be-come one of the hot cathode materials for lithiumion batteries, and is considered to be a new high-capacity in-dustrial battery materials. This paper discusses the synthesis methods of Li3V2 （PO4）3, charging and discharging mechanism, and its recent research status and modification, and the research trends of Li3V2 （PO4）3 cathode mate-rial was also prospected. Ball milling assisted carbothermal reduction method of lithium ion cathode material Li 3V2 （PO4）3 is applied and Li3V2 （PO4）3 was modified by a metal ion doping. The results show that with a small amount of Fe doped, the material discharge capacity and cycle performance increases.