Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : November 23, 2018 - November 25, 2018
We developed a method to identify concentration-dependent characteristics of an electrochemical reaction. Concentration and reaction rate distributions on electrode surface cannot be measured directly and a sum of the reaction rate distribution is observed as a current. Therefore, an inverse analysis approach is applied to identify the concentration-dependent characteristics. The unknown characteristics are expressed with a piecewise linear function with unknown parameters. Concentration field and velocity field are modeled with the advectiondiffusion equation and Navier-Stokes equation. These equations are solved by the finite volume method. In order to estimate the unknown parameters, a residual between the observed current and calculated current is minimized by the Nelder-Mead method. The proposed method is applied to a reduction reaction of a copper ion. The currents calculated from the identified characteristics are good agreement with the observed value. This result shows that identified characteristics approximate the true characteristics.
