Fig. 4: Charge and discharge cycling of the alkaline PSA RFB. | Nature Communications

Fig. 4: Charge and discharge cycling of the alkaline PSA RFB.

From: A cost-effective alkaline polysulfide-air redox flow battery enabled by a dual-membrane cell architecture

Fig. 4: Charge and discharge cycling of the alkaline PSA RFB.

a Experimental setup of single-membrane-structured PSA RFB. b Experimental setup of dual-membrane-structured PSA RFB. c Voltage profile of the PSA RFB with FAA-3-PK-130 AEM over 10 cycles. d Voltage profile of the PSA RFB with Nafion 117 CEM over 20 cycles. e Voltage profile of the PSA RFB with both FAA-3-PK-130 AEM and Nafion 117 CEM over 80 cycles. f Voltage efficiencies against cycle number of the PSA RFBs with either single or dual membranes. g Coulombic efficiencies against cycle number of the PSA RFBs with either single or dual membranes. (inset figure shows the minified scale for showing the Coulombic efficiency degradation of single-AEM cell). h Round-trip energy efficiencies against cycle number of the PSA RFBs with either single or dual membranes.

Back to article page