Fig. 6: PEM electrolyzer performance using RuMW-Mn1-xCrxO2 as anode electrocatalyst. | Nature Communications

Fig. 6: PEM electrolyzer performance using RuMW-Mn1-xCrxO2 as anode electrocatalyst.

From: Electron–phonon coupling and coherent energy superposition induce spin-sensitive orbital degeneracy for enhanced acidic water oxidation

Fig. 6

a Schematic of the stack structure and operation principle for the PEM electrolyzer. b The SEM image and corresponding elemental mapping of the MEA prepared by the CCM process. c Polarization curves of the PEM electrolyzer using RuMW-Mn1-xCrxO2 or com-RuO2 as the anodic catalyst and commercial Pt/C as the cathodic catalyst, at room temperature (RT) and 80 °C. No cell voltages were iR compensated. d Top panel: Chronopotentiometry curves of the PEM electrolyzer using RuMW-Mn1-xCrxO2 or com-RuO2 catalyst operated at 200 mA cm−2. Bottom panel: Chronopotentiometry curve of the PEM electrolyzer using RuMW-Mn1-xCrxO2 catalyst operated at 1000 mA cm−2. e Comprehensive comparison of the PEM electrolyzer using RuMW-Mn1-xCrxO2 (red line) and com-RuO2 catalysts (blue line) in terms of the W, ETH (500 mA cm−2), j (at 1.8 V), R, T, and per GGE H2 price. W, power consumption per cubic meter of hydrogen yield; ETH, electricity-to-hydrogen energy conversion efficiency; j, current density; R, hydrogen production rate; GGE, gallon of gasoline equivalent.

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