Abstract
Static three-chamber ZnI2 redox batteries are designed and analyzed electrochemically. The reversibility of the zinc plating/stripping process is evaluated by monitoring the cathodic/anodic peaks in the cyclic voltammograms. The electrochemical redox process of iodide on the cathode is analyzed based on the impedance spectra. The reversibility of zinc plating/stripping is related to I2 adsorption and improving performance of three-chamber ZnI2 redox battery could be attributed to the isolation of redox ions. The multi-electrolyte battery limits the influence of I2 adsorption and delivers better performance including of the high discharging voltage and power density.
Funder
National Natural Science Foundation of China
Publisher
The Electrochemical Society