Fig. 3: Estimation of SOEEins for SFB built with SJ-GaAs photoanode and BTMAP redox couples.
From: An efficient and stable solar flow battery enabled by a single-junction GaAs photoelectrode

a I–V performance of the GaAs photoanode at 50% SOC under solar cell mode (red line) and RFB mode (blue lines) in 0.2 M BTMAP electrolytes with the flow rate of 60 mL min−1 measured under one Sun illumination. The blue lines from light to dark represent the Ecell at 1–99% SOC of the RFB. Note that photocurrent instead of photocurrent density is plotted here. b Potential match profile of the SFB’s SOEEins as a function of Ecell, (red curve) and the state of charge (SOC, blue curve).