Fig. 4. Temperature coefficient of the redox reaction for the I⁻/I₃⁻+ 2 wt % MC + 0.3 M KCl electrolyte.

(A) Schematic of the three-electrode configuration for isothermal CV measurements. (B) CV curves in the temperature range from 25° to 52°C. (C) Open-circuit voltages under different temperatures. (D) Temperature dependence of the open-circuit voltage. The slope of the linear fitting curve gives the temperature coefficient of the redox reaction.