Jeong Gyoung Hwa, Lee Hae-Min, Kang Ji-goo, Lee Heewoong, Kim Chang-Koo, Lee Jae-Hyeok, Kim Jae-Ho, Kim Sang-Wook
Center of Molecular Science and Technology, ⊥Division of Energy Systems Research, and §Department of Molecular Science and Technology, Ajou University , Suwon 443-749, Korea.
ACS Appl Mater Interfaces. 2014 Nov 26;6(22):20171-8. doi: 10.1021/am505747w. Epub 2014 Nov 12.
We report on the first synthesis of porous ZrO2-SiO2 sheets with well-defined ultrasmall WO3 nanoparticles for energy storage performance. In our system, for improving the surface deterioration of electrode, we use the ZrO2-SiO2 sheets using graphene oxide as a template to access electrode substrate. The synthesized electrode with about 20 nm thickness and about 10 nm pores, has a maximum value of 313 F/g at current density of 1 A/g and a minimum value of 160 F/g at current density of 30 A/g in the specific capacitance. In addition, over 90% of its initial specific capacitance is retained when they are cycled up to 2500 cycles.
我们报道了首次合成具有明确的超小WO₃纳米颗粒的多孔ZrO₂-SiO₂片材及其储能性能。在我们的体系中，为改善电极的表面劣化，我们使用以氧化石墨烯为模板的ZrO₂-SiO₂片材来接触电极基底。合成的电极厚度约为20 nm，孔径约为10 nm，在1 A/g的电流密度下比电容最大值为313 F/g，在30 A/g的电流密度下比电容最小值为160 F/g。此外，当它们循环至2500次时，其初始比电容保留超过90%。
