为了寻找制备锂离子电池正极材料LiCoPO4的新方法，室温下把LiOH•H2O﹑NH4H2PO4 及Co(CH3COO)2•4H2O混合后放于研钵中研磨成均匀的粉末，将粉末在70℃的条件下干燥4h后，制得前驱体，再于5种不同焙烧温度( 500℃，550℃，600℃，650℃，700℃)下焙烧4h 进行热固相反应，即能得到正极材料LiCoPO4晶体。用X-射线衍射( XRD) 及扫描电镜( SEM) 对产物进行表征。接着按化学计量数之比为（10:10:10:1）称取LiOH•H2O﹑NH4H2PO4 ﹑Co(CH3COO)2•4H2O及氧化石墨按照固相合成法制备LiCoPO4 / C的复合正极材料,通过XRD和扫描电镜SEM对复合材料的微观结构及形貌进行分析。把所合成的正极材料及复合材料通过浆料制作、涂覆、滚压、切片等程序均组装成电池，在0.1 C倍率下,进行电化学性能的测试，结果表明，纯LiCoPO4正极材料在0.1 C倍率充放电时充电可达43.5mAh/g，放电32.5435 mAh/g，性能较差；LiCoPO4 / C复合正极材料由于制备过程中未能按设计得到包覆石墨烯的LiCoPO4材料，放电仅为1.98 mAh/g。对高电压正极材料LiCoPO4的研究有助于提升正极材料的容量，为下一代锂离子电池容量的提升奠定基础。

In order to find a new method to prepared for of lithium ion battery cathode material LiCoPO4, the LiOH • H2O, NH4H2PO4 and Co(CH3COO) 2 • 4 H2O was mixed in the mortar， which the powder under the condition of 70 ℃ maintenance 4 h, and the mixed powder was in five different calcination temperature (500 ℃, 550 ℃, 600 ℃, 650 ℃, 700 ℃) roasting 4 h under thermal solid phase reaction, Using X-ray diffraction (XRD) and scanning electron microscope (SEM) of the product were characterized. According to the mass ratio (10:10:10:1) with LiOH • H2O, NH4H2PO4, Co (CH3COO) 2 • 4 H2O and graphite oxide, the LiCoPO4 / C composite cathode material were prepared, through XRD and scanning electron microscopy, SEM analysis of microstructure and morphology of the composites. The synthesis of the anode materials and composite materials by slurry making, coating, rolling, are assembled into the battery slice, procedure, under 0.1 C ratio, the electrochemical performance of the tests, the results showed that the pure LiCoPO4 cathode material in 0.1 C ratio charge when charging and discharging of 43.5 mAh/g, discharge of 32.5435 mAh/g, poor performance; LiCoPO4 / C composite cathode material due to not according to the design in the process of preparation of coated graphene LiCoPO4 material, discharge of only 1.98 mAh/g. The research of high voltage anode material LiCoPO4 helps to enhance the capacity of the anode materials, lay a foundation for the next generation of lithium ion battery capacity of ascension.