Fig. 3: Electrochemical performances of 1,5-DHAQ and Cys-DHAQ. | Nature Communications

Fig. 3: Electrochemical performances of 1,5-DHAQ and Cys-DHAQ.

From: An amphoteric and hydrogen-bond-rich artificial α-amino acid for highly durable aqueous redox flow batteries

Fig. 3

Polarization and power density curves of (a) 0.1 M 1,5-DHAQ||K4[Fe(CN)6] and (b) 0.1 M Cys-DHAQ||K4[Fe(CN)6] AORFBs collected at SOCs of 20%, 50%, and 100%. c Coulombic efficiencies, energy efficiencies, and specific capacities of 1,5-DHAQ||K4[Fe(CN)6] and Cys-DHAQ||K4[Fe(CN)6] AORFBs evaluated by galvanostatic charge/discharge at various current densities of 20, 40, 80, 100, and 150 mA cm−2. d Coulombic efficiency, energy efficiency, and capacity utilization ratio of the Cys-DHAQ||K4[Fe(CN)6] AORFB at various current densities. Charge/discharge profiles of (e) 1,5-DHAQ||K4[Fe(CN)6] and (f) Cys-DHAQ||K4[Fe(CN)6] AORFBs at the 10th, 500th, and 1000th cycles, respectively. g Cycling performances of 1,5-DHAQ||K4[Fe(CN)6] and Cys-DHAQ||K4[Fe(CN)6] AORFBs upon galvanostatic-potentiostatic cycling at a current density of 100 mA cm−2 ranging from 1.5 to 0.5 V.

Back to article page