【摘 要】
：
A W/WO3 pH electrode was prepared by a method of sol-gel. In order to study the H+ response dynamic mechanism, the electrochemical impedance spectroscopy (EIS)
【机 构】
：
College of Mechanical Engineering,School of Science,Chemistry Department
【基金项目】
：
Science Foundation of Guangdong province of China;Science Foundation of Foshan University
论文部分内容阅读
A W/WO3 pH electrode was prepared by a method of sol-gel. In order to study the H+ response dynamic mechanism, the electrochemical impedance spectroscopy (EIS) experiment was conducted. It was found that the H+ response course is controlled by the H+ diffusion from the solution to the WO3 film, based on the analysis of EIS spectra. The EIS and potential step method were used to determinate the H+ diffusion coefficient (D) in the course of H+ response of this W/WO3 electrode, and the values of D calculated by these two method correspond very well, which all are about 10-10 cm2/s.The imposed different potential steps make little effect on the calculation of H+ diffusion coefficient, and it was found that the limiting Cottrell equation of short elapsed time fits well to the current transient caused by a potential step, based on the analysis of the time constant.
其他文献
Firstly, the cross large deflection equation of circular thin plate with variable thickness in rectangular coordinates system was transformed into unsymmetrical
Reliable turbulent channel flow databases at several Reynolds numbers have been established by large eddy simulation (LES), with two of them validated by compar
A multisensor image fusion algorithm is described using 2-dimensional nonseparable wavelet frame (NWF) transform. The source multisensor images are first decomp
主要对一般情形、含无风险资产和含外生负债三种情况下的TSF模型用直观解法求解,并对其最优解、可行解的存在性条件进行详细讨论,另外还提出一些值得进一步研究的问题.
With the help of an electromagnetic stirring device, alloy melt quenching and EBSD (electron back scatter diffraction)analysis technology, the microstructure of
The austenite medium Mn steel modified with controlled additions of Ca, Y, Si were directionally solidified using the vertical Bridgman method to study the effe
SrBi2.2Ta2O9(SBT) thin film with thickness of 2 μm was successfully prepared by sol-gel method, using strontium acetate semihydrate [Sr(CH3COO)2·1/2H2O] and b
Ce-Zr compounds such as Ce0.68Zr0.32O2 solid solution, Ce/Zr nitrate and CeO2/ZrO2 were added into γ-alumina-based slurries, which were then loaded on FeCrAl f
提出了求解度约束最小生成树问题的单亲遗传算法.该算法首先利用Prufer数对生成树进行编码;然后精心地设计了一个随机地产生初始种群的方法,用这种方法产生的初始种群,不会
The time sequence of longitudinal velocity component at different vertical locations in turbulent boundary layer was finely measured in a wind tunnel. The conce