Visualization of Electrochemical Behavior under Finite Conditions using JAVA and its Application for Assisted Learning

Hidenobu SHIROISHI^a*, Tomoyo NOMURA^a, Kazunori ISHIKAWA^a, Sumio TOKITA^b and Masao KANEKO^{a, §}

(Received: January 29, 2001; Accepted for publication: February 28, 2001; Published on Web: March 24, 2001)

Electrochemical measurements in a three electrode system under finite conditions, e.g., at an electrode coated with a polymer film incorporating functional molecules have been simulated using a program written in the JAVA language. The simulation with or without a catalytic reaction by the functional molecules has been performed using the program. The shape of a cyclic voltammogram under finite conditions is different from that under infinite conditions applied to ordinary solution electrochemistry. The fraction of the functional molecules that accepted charges (R_CT) has been calculated by integrating a concentration distribution. The current under finite conditions in a potential-step measurement deviated from that under infinite conditions above R_CT 0.5. The program was introduced to a document on the electrochemistry written in HTML. It can be used by many students in an electrochemistry class without heavy loads on the server computer.

Keywords: Electrochemical measurements, Cyclic voltammogram, Charge propagation, Polymer-coated electrode, Finite condition, JAVA, Education

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