Journal of Inorganic Materials, Volume. 36, Issue 6, 637(2021)
Figures & Tables(16)
1. Schematic illustration for fabrication procedure of Nd-Ni-B/NF electrocatalysts
2. SEM images of (a) NF and (b,c) 3-NNB/NF, (d) EDX mappings of 3-NNB/NF
3. (a) TEM and (b) HRTEM images of 3-NNB/NF with inset in (b) showing the corresponding SAED pattern
5. (a) LSV curves, (b) overpotentials at 20 mA∙cm-2, (c) Tafel curves (derived from (a)) and (d) exchange current densities (j 0) derived from the Tafel curves of x -NNB/NF(x =0, 2, 3, 4, 5) and Pt/C electrodes; (e) CV curves of 3-NNB/NF electrode at different scan rates; (f) Coulomb curves of charge double-layer capacitance of x -NNB/NF(x =0, 2, 3, 4, 5) electrodes
6. Nyquist plots of x -NNB/NF(x =0, 2, 3, 4, 5) electrodes towards HER with inset showing the corresponding equivalent circuit
7. (a) LSV curves and (b) Tafel curves of NNB/NF-y (y =25, 35, 45, 55) electrodes
8. (a-e) CV curves at different scan rates and Coulomb curves of charge double-layer capacitance for NNB/NF-y (y =25, 35, 45, 55) electrodes
9. (a) I -t curve for NNB/NF-35 under 100 mV static overpotential for stability test 12 h; (b) Polarization curves of NNB/NF-35 before and after 2000 CV sweeps; (c) LSV curves and digital photos (insets) of NNB/NF-35 electrodes with different shapes; (d) Comparison of HER activities for different non-noble electrocatalytic materials in alkaline solution
S2. CV curves at different scan rates for x -NNB/NF(x =0, 2, 3, 4, 5)
S3. (a) SEM image and XRD pattern of 3-NNB/Cu-600 ℃; (b) LSV curves of 3-NNB/Cu and 3-NNB/Cu-600 ℃
S4. Faradaic efficiencies for HER catalyzed by NNB/NF-35 in 1.0 mol∙L-1 KOH
S5. SEM images of NNB/NF-35(a) before and (b) after the HER measurement for 12 h
Table 1. EIS parameters of
x -NNB/NF(x =0, 2, 3, 4, 5) electrodesView tableView in ArticleTable 1. EIS parameters of
x -NNB/NF(x =0, 2, 3, 4, 5) electrodesElectrode Rs/(Ω∙cm-2) RP/(Ω∙cm-2) Rct/(Ω∙cm-2) 0-NNB/NF 0.195 1.573 1.578 2-NNB/NF 0.167 1.294 1.310 3-NNB/NF 0.152 1.261 1.279 4-NNB/NF 0.165 1.438 1.455 5-NNB/NF 0.166 1.536 1.543
Table 2. Comparison of the electrocatalytic HER activity for representative nonprecious HER catalysts in 1.0 mol∙L-1 KOH electrolyte
View tableView in ArticleTable 2. Comparison of the electrocatalytic HER activity for representative nonprecious HER catalysts in 1.0 mol∙L-1 KOH electrolyte
Catalyst Current density@Overpotential Tafel slope/(mV∙dec-1) Ref. Nd-Ni-B/NF 20 mA∙cm-2@180 mV 117 This work Ni-Co/RuO2 50 mA∙cm-2@180 mV 168.3 [1] Ni-Fe-S/Ti 50 mA∙cm-2@126 mV 269 [2] V-Ni2P NSAs/CC 10 mA∙cm-2@85 mV 95 [3] Ni-Fe-P 10 mA∙cm-2@174.2 mV 142.9 [4] Ni/NiS 10 mA∙cm-2@230 mV 123 [5] FeP Nanorod 10 mA∙cm-2@218 mV 146 [6] Ni0.5Co0.5/NC 10 mA∙cm-2@282 mV 189 [7] FeCoP Nanoarrays 10 mA∙cm-2@175 mV 132 [8] Ni2P-NiSe2 10 mA∙cm-2@66 mV 72.6 [9] Ni-Co-P/NF 10 mA∙cm-2@85 mV 46 [10]
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Yunna ZHU, Biqing CHEN, Tianshu CHENG, Chan DU, Shimin ZHANG, Jing ZHAO.
Paper Information
Category: RESEARCH ARTICLE
Received: Aug. 10, 2020
Accepted: --
Published Online: Nov. 25, 2021
The Author Email: CHEN Biqing (chenbq2332@163.com)
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