Iron-2,3diaminophenazine 복합체를 레독스 커플로 사용한 철 레독스 흐름 전지의 에너지밀도 향상

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.