Fig. 2: n-Co3S4@NF SOR performance. | Nature Communications

Fig. 2: n-Co3S4@NF SOR performance.

From: Energy-saving hydrogen production by seawater electrolysis coupling tip-enhanced electric field promoted electrocatalytic sulfion oxidation

Fig. 2

a The digital image of an H-type cell. b Comparing the SOR and OER polarization curves (with iR compensation) of n-Co3S4@NF with a loading mass of approximately 3.6 mg cm−2 and a charge transfer resistance (Rct) of about 0.82 Ω. c LSV curves (with iR compensation), (d) Tafel plots, and (e) Nyquist plots for SOR in 1 M NaOH containing 1 M Na2S (pH ≈ 14.1). f Durability test of n-Co3S4@NF for SOR (replacing fresh electrolyte every 24 h). g XRD patterns of the n-Co3S4@NF before and after 240 h SOR durability test. Three-dimensional X-ray tomography images of the electrodes: h before and (i) after 24 h SOR stability test for blank NF; (j) before and (k) after 24 h SOR stability test for n-Co3S4@NF. l Chronoamperometric responses of n-Co3S4@NF for SOR at different potentials (inset: digital images of the electrolyte after electrolysis). m UV-vis spectra of the electrolyte after 3600 s SOR of n-Co3S4@NF at different potentials. n XRD pattern of the sulfur powder and the corresponding photograph.

Back to article page