Fig. 5: Electrochemical performance of Ru NPs/TiN in AEM electrolyzers. | Nature Communications

Fig. 5: Electrochemical performance of Ru NPs/TiN in AEM electrolyzers.

From: Rationally designed Ru catalysts supported on TiN for highly efficient and stable hydrogen evolution in alkaline conditions

Fig. 5

a Schematics of the AEM electrolyzer. b J–V curves of the AEM electrolyzer using Ru NPs/TiN, commercial Pt/C (20%) and Ru/C (5%) as the cathode catalyst and NiMoFeOx NF as the anode catalyst, measured at 25 °C and 1 bar. Geometric area of the electrode: 1 cm2; electrolyte: 30% KOH; scan rate: 1 mV s−1. c LSV curves of the Ru NPs/TiN | |FAAM-20 | |NiMoFeOx NF AEM electrolyzer measured at different temperatures. Geometric area of the electrode: 1 cm2; electrolyte: 30% KOH; scan rate: 1 mV s−1. d Energy efficiency of Ru NPs/TiN | |FAAM-20 | |NiMoFeOx NF AEM electrolyzer under different current densities. e EIS of the AEM electrolyzer (Rs: 89 ± 3.92 mΩ, 89 is the average of the values of four tests, and 3.92 is the standard deviation). f Polarization curves of Ru NPs/TiN | |FAAM-20 | |NiMoFeOx NF in the AEM electrolyzer measured before and after the stability test. g Chronopotentiometry test of Ru NPs/TiN | |FAAM-20 | |NiMoFeOx NF at 1, 2 and 5 A cm−2 in the AEM electrolyzer, measured at 80 °C and ambient pressure. Geometric area of the electrode: 1 cm2; electrolyte: 30% KOH.

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