Fig. 5: Electrocatalytic HER activity and stability for Ni/Yb2O3 electrode in 1.0 M KOH. | Nature Communications

Fig. 5: Electrocatalytic HER activity and stability for Ni/Yb2O3 electrode in 1.0 M KOH.

From: Bixbyite-type Ln2O3 as promoters of metallic Ni for alkaline electrocatalytic hydrogen evolution

Fig. 5: Electrocatalytic HER activity and stability for Ni/Yb2O3 electrode in 1.0 M KOH.The alternative text for this image may have been generated using AI.

a Polarization curves (scan rate: 5 mV s−1) of Ni/Yb2O3, Ni/CeO2, and Pt/C(20%) electrodes with a mass loading of ca. 3.5 mg cm−2. b Tafel plots derived from the curves in (a). c TOF values of Ni/Yb2O3, Ni/CeO2, and Pt/C(20%) electrodes. d Chronopotentionmetric curves of Ni/Yb2O3, Ni, and Pt/C(20%) electrodes at the overpotential of 116.0, 305.0, and 167.0 mV, respectively. e TEM image of Ni/Yb2O3 after the HER test. f Comparison of the HER activities for Ni/Yb2O3 and the reported electrocatalysts (Supplementary Table 6).

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