| 초록 |
A thermogalvanic (TG) cell is a non-isothermal electrochemical cell, in which identical two electrodes are held in electrolytes at different temperatures. The origin of the electricity is the entropy change accompanying the redox reaction. It utilizes the temperature dependence of redox potential, which originates from the entropy change of the redox reaction. TG cell is a truly clean thermal energy conversion device that can generates electricity from ubiquitous heat sources such as industrial/residential waste water streams, cooling systems, and sun light. This study examines the TG cells based on the iodide-based redox couples (triiodide/iodide) in carbonates solutions. The effects of iodide speciation, concentration, solvent composition on the TG cell performances are addressed. Then, we analyze why power conversion efficiency and Seebeck coefficient of this system are higher than one of Fe(CN)63-/Fe(CN)64-. |
