Advisor

Wipf, David O.

Committee Member

Emerson, Joseph P.

Committee Member

Mlsna, Todd E.

Date of Degree

1-1-2018

Document Type

Graduate Thesis - Open Access

College

College of Arts and Sciences

Department

Department of Chemistry

Abstract

This thesis describes the fabrication of an induction heating apparatus and its use to directly heat small platinum and gold electrodes in electrolyte solution. The heating characteristics of the electrodes were studied via the entropic shift of redox potential with temperature and change in Faradaic current. Temperature pulse voltammetry (TPV) and cyclic voltammetry were used for temperature calibration under various heating conditions. The maximum temperature reached at a 0.25 mm diam platinum electrode surface in solution was 84 degrees C. At heated electrodes an increase in current was found to be due to convection and diffusion. TPV was performed with inductively heated gold (0.5 mm diam) and platinum electrodes, which gave complete current-potential-temperature information. Induction heated Pt electrodes were employed to investigate the kinetics and mass transfer process of oxygen reduction reaction (ORR) in acidic and alkaline media.

URI

https://hdl.handle.net/11668/21110

Share

COinS