Characterization of Carbon Fiber Electrode for Vanadium-Based Redox Flow Batteries

Electrochemical properties of vanadium-based redox flow batteries (RFB) depend on many factors, such as redox chemical species, electromotive force, concentration of active materials, viscosity of electrolyte solution, electrode materials, electrode characteristics, and so on. One of the most important factors that regulate the RFB performance is the properties of electrodes.

  In the case of actual vanadium-based RFB, carbon felt/fiber electrodes were used. Electrochemical performance of such carbon felt/fiber electrodes was treated in average. To evaluate RFB properties quantitatively, we adopted carbon single fiber electrode.

　Carbon single fiber electrodes were prepared from carbon electrodes for vanadium RFB to examine the relationship between the carbon electrode and battery performance. Carbon single fiber electrodes were evaluated electrochemically. Statistical analysis was applied for about 10 carbon single fiber electrodes. Electrochemical responses of carbon fiber electrodes were compared with the previous results [1].

References:

[1] H. Kaneko, K. Nozaki, Y. Wada, T. Aoki, A. Negishi, and M. Kamimoto, Electrochim. Acta, 36, 1191 (1991).