| Title |
Enhanced Energy Density of Iron-2,3diaminophenazine Complex as a Redox Couple for All Iron Redox Flow Batteries |
| Authors |
서채린(Chae-Lin Seo) ; 진창수(Chang-Soo Jin) ; 연순화(Sun-Hwa Yeon) ; 신경희(Kyung-Hee Shin) ; 신동욱(Dong-Wook Shin) |
| DOI |
https://doi.org/10.5370/KIEE.2024.73.7.1198 |
| Keywords |
AIRFB(all iron redox flow battery); Energy storage; Iron complex; Electrolytes |
| Abstract |
In this study, Fe-2,3diaminophenazine was synthesized by reacting Fe(III) ions with 2,3-diaminophenazine in a 1:3 ratio. The electrochemical properties were evaluated using cyclic voltammetry, indicating reversible reactions based on the Ip.c/Ip,a value. Flow cell charge-discharge tests were conducted on the synthesized compound. It maintained a high current efficiency of 99.6% over 50 cycles, exhibiting 77.8% of theoretical capacity in the first cycle and retaining 64% of the initial capacity after 50 cycles. These suggest that the synthesized Fe-2,3diaminophenazine is well-suited as a cathode material for aqueous redox flow batteries, highlighting its promising potential for practical applications in energy storage systems. |