Fig. 7: Insights of the role of Joule heating. | Nature Communications

Fig. 7: Insights of the role of Joule heating.

From: Engineering active and robust alloy-based electrocatalyst by rapid Joule-heating toward ampere-level hydrogen evolution

Fig. 7: Insights of the role of Joule heating.

a Polarization curves of RuMo@MoOx-JH with the reference of RuMo-JH@MoOx-TG (The electrode surface area was 1.0 cm × 1.0 cm, and the resistance was 1.60 ± 0.14 Ω). b EIS-derived Tafel plots of RuMo@MoOx-JH and RuMo-JH@MoOx-TG. c Plots of Cφ vs. potential. d Polarization curves of RuMo@MoOx-JH and RuMo-JH@MoOx-TG with various pH solutions and derived Tafel plots (The electrode surface area was 1.0 cm × 1.0 cm, and the resistance was provided in the Supplementary Information). e The linear plots of peak potentials vs. different scan rates. f Electron paramagnetic resonance spectra of Mo@MoOx-JH and Mo@MoOx-TG. g, i Proposed nature of hydrogen spillover phenomenon in RuMo@MoOx-JH and RuMo-JH@MoOx-TG. h Calculated free energy diagram for alkaline HER on RuMo@MoOx-JH and RuMo-JH@MoOx-TG. Source data for Fig. 7 are provided as a Source Data file.

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