CAJ | 학술논문

通过球磨CuF_2和MoO_3的混合物,制成CuF_2/MoO_3复合材料.通过X射线衍射(XRD)、扫描电镜(SEM)和电化学测试等研究CuF_2/MoO_3复合材料的结构和电化学性能.结果表明:MoO_3晶粒均匀地附着在CuF_2的表面,形成均匀的导电网,从而使制备的CuF_2/MoO_3复合材料具有高导电性,可作为锂一次电池正极活性材料.以0.1C倍率放电,截止电压为1.5 V,CuF_2/MoO_3复合材料放电比容量高达483mA·h/g,放电电位平台为2.5 V,明显高于CuF_2正极材料的278 mA·h/g,接近其理论容量528 mA·h/g.
통과구마CuF_2화MoO_3적혼합물,제성CuF_2/MoO_3복합재료.통과X사선연사(XRD)、소묘전경(SEM)화전화학측시등연구CuF_2/MoO_3복합재료적결구화전화학성능.결과표명:MoO_3정립균균지부착재CuF_2적표면,형성균균적도전망,종이사제비적CuF_2/MoO_3복합재료구유고도전성,가작위리일차전지정겁활성재료.이0.1C배솔방전,절지전압위1.5 V,CuF_2/MoO_3복합재료방전비용량고체483mA·h/g,방전전위평태위2.5 V,명현고우CuF_2정겁재료적278 mA·h/g,접근기이론용량528 mA·h/g.
The CuF_2/MoO_3 composite was prepared by milling the mixture of CuF_2 and MoO_3. The structural and electrochemical properties of the CuF_2/MoO_3 composite were investigated by X-ray diffraction (XRD), scanning electron microscope (SEM) and electrochemical experiments. The results indicate that the MoO_3 grains homogeneously coat on the surface of CuF_2 and then form a high conductive matrix, which can be used for cathode material of lithium primary batteries. The specific discharge capacity of CuF_2/MoO_3 composite is as high as 483 mA·h/g at a rate of 0.1C and the cutoff of 1.5 V, which is apparently higher than that of the lithium primary battery using pure CuF_2 (278 mA·h/g) as cathode active material and close to the theoretical specific capacity of CuF_2 (528 mA·h/g).