State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China.
ACS Appl Mater Interfaces. 2011 Nov;3(11):4315-22. doi: 10.1021/am200988q. Epub 2011 Oct 25.
A mild hydrolysis method was proposed to synthesize TiO(2) nanoparticles (NPs), in which polyoxometalate adjusted the hydrolyzation reaction rate and controlled the size of TiO(2). The resultant TiO(2) NPs were fully characterized via XRD, SEM, TEM, XPS. The electrochemical investigations demonstrated that the as-obtained TiO(2) NPs delivered higher specific capacitance than that of bulk and commercial samples in lithium-ion aqueous solution. Furthermore, the charge storage mechanism of TiO(2) NPs was also studied. More importantly, the aqueous hybrid capacitors based on activated carbon (AC) and TiO(2) were constructed and their electrochemical performance were fully investigated in aqueous solutions.
提出了一种温和的水解方法来合成 TiO(2)纳米粒子 (NPs)，其中多金属氧酸盐调节水解反应速率并控制 TiO(2)的尺寸。通过 XRD、SEM、TEM、XPS 对所得 TiO(2) NPs 进行了全面表征。电化学研究表明，与块状和商业样品相比，所获得的 TiO(2) NPs 在锂离子水溶液中具有更高的比电容。此外，还研究了 TiO(2) NPs 的电荷存储机制。更重要的是，构建了基于活性炭 (AC) 和 TiO(2) 的水系混合电容器，并在水溶液中对其电化学性能进行了全面研究。
