摘要
以钛酸异丙酯为钛源,通过溶胶-凝胶法合成TiO_2作为混合型锂离子电容器阳极材料。通过X射线衍射(XRD)测试和扫描电子显微镜(SEM)测试,结果表明:TiO_2材料的晶型锐钛矿,微观形貌为具有单分散性,直径为300nm的球体。将其作为阳极材料,活性炭为阴极材料组组装为混合型锂离子电容器。电化学性能测试表明:该设备同时具有离子的吸附/脱附和离子的嵌入/脱出两种不同的储能方式且性能在同类器件中较为优异;在功率密度为225W·kg^(-1)时,能量密度可高达42.94Wh·kg^(-1)。即使其功率密度高达4.45 kW·kg^(-1)时,能量密度仍可高达10.85 Wh·kg^(-1)。
With titanium source of isopropyl titanate, TiO2 anode material of hybrid Li-ion capacitor was syn- thesized by sol-gel method. The morphology and morphology of TiO2 anode material was characterized by X-ray diffraction（XRD） and scanning electron microscope（SEM） .The results showed that the microstructure of TiO2 material has a single dispersity and a diameter of 300 nm. the hybrid li-ion capacitor with TiO2 as anode material and activated carbon as cathode materialwas assembled . Electrochemical performance test showed that the device has two different kinds of energy storage and excellent performance in the same device.When the power density is 225 W·kg-1, the energy density can be as high as 42.94 Wh·kg-1.Even if its power density is as high as 4.45 kW·kg-1, the energy density can be as high as 10.85 Wh·kg-1.
作者
周国江
王倩倩
ZHOU Guo-jiang;WANG Qian-qian(School of Environment ＆ Chemical Engineering,Heilongjiang University of Science ＆ Technology,Harbin 15522,China)
出处
《化学工程师》
CAS
2018年第10期63-66,共4页
Chemical Engineer
