Palladium-Nickel Electrocatalysts on Nitrogen-Doped Reduced Graphene Oxide Nanosheets for Direct Hydrazine/Hydrogen Peroxide Fuel Cells
Abstract
:1. Introduction
2. Results and Discussion
2.1. Physical Characterization of Nanocatalysts
2.2. Half-Cell Measurements
2.3. Single-Cell Tests
3. Experimental
3.1. Materials
3.2. Methods
3.3. Physical and Electrochemical Characterization
3.4. DHzHPFC Measurements
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Catalyst Type | ECSA (m2 g−1) | ip (A g−1) | Onset Potential (V vs. MOE) |
---|---|---|---|
Pd/NrGO | 63.67 | 6821.22 | −0.40 |
Pd–Ni/NrGO | 166.38 | 12,360.50 | −0.45 |
N2H4 Concentration (mol L−1) | Potential (V vs. MOE) | Temperature (°C) | Rct (Ω cm2) |
---|---|---|---|
0.02 | −0.5 | 25 | 92.76 |
0.06 | −0.5 | 25 | 31.27 |
0.1 | −0.5 | 25 | 22.03 |
0.1 | −0.5 | 45 | 17.12 |
0.1 | −0.9 | 25 | 4422 |
FC Condition | MPD/(mW cm−2) | ||
---|---|---|---|
[N2H4]/(mol L−1) | [H2O2]/(mol L−1) | T/(°C) | |
2.0 | 0.5 | 25 | 101.93 |
2.0 | 1.0 | 25 | 120.50 |
2.0 | 2.0 | 25 | 152.74 |
2.0 | 3.0 | 25 | 130.25 |
0.5 | 2.0 | 25 | 136.72 |
1.0 | 2.0 | 25 | 167.38 |
1.0 | 2.0 | 45 | 187.87 |
1.0 | 2.0 | 60 | 216.71 |
Anode | Cathode | Membrane | Anolyte | Catholyte | Temperature (℃) | Maximum Power Density (mW cm−2) | Ref. |
---|---|---|---|---|---|---|---|
Pt53Cu47/C (0.5 mg cm−2) | Pt/C (20 wt.%) (1.0 mg cm−2) | Tokuyama | KOH 1.0 M + N2H4 1.0 M | O2 flow rate: 30 SCCM | 80 | 56.1 | [67] |
Ni0.6Co0.4 nanosheets (1.4 mg cm−2) | Pt/C (40.0 wt.%) | Nafion 115 | KOH 4.0 M + N2H4 20.0 wt% | H2O2 20.0% + H2SO4 0.5 M | 80 | 107.1 | [68] |
Pd/CNT (1.0 mg cm−2) | Pt/C (0.25 mg cm−2) | Nafion 117 | NaOH 1.0 M + N2H4 2.0 M | O2 flow rate: 150.0 mL min−1 | 60 | 110 | [69] |
Co–Au/C (1.0 mg cm−2) | Au/C (1.0 mg cm−2) | Nafion 117 | NaOH 2.0 M + N2H4 2.0 M | H2O2 2.0 M + H2SO4 0.5 M | 60 | 122.8 | [4] |
MoCx–NC (1.0 mg cm−2) | Pt/C (1.0 mg cm−2) | KOH-doped PBI | KOH 6.0 M + N2H4 0.5 M | O2 Flux: 0.2 slpm | 80 | 158.26 | [70] |
Ni–Pd/rGO (1.0 mg cm−2) | Pt/C (0.5 mg cm−2) | Nafion 117 | NaOH 2.0 M + N2H4 1.0 M | H2O2 2.0 M + H2SO4 0.5 M | 60 | 204.8 | [13] |
Pd–Ni/NrGO (1.0 mg cm−2) | Pt/C (0.5 mg cm−2) | Nafion 117 | N2H4 1.0 M + NaOH 2.0 M | H2O2 2.0 M + H2SO4 0.5 M | 25 60 | 187.87 216.71 | This work |
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Hosseini, M.G.; Daneshvari-Esfahlan, V.; Aghajani, H.; Wolf, S.; Hacker, V. Palladium-Nickel Electrocatalysts on Nitrogen-Doped Reduced Graphene Oxide Nanosheets for Direct Hydrazine/Hydrogen Peroxide Fuel Cells. Catalysts 2021, 11, 1372. https://doi.org/10.3390/catal11111372
Hosseini MG, Daneshvari-Esfahlan V, Aghajani H, Wolf S, Hacker V. Palladium-Nickel Electrocatalysts on Nitrogen-Doped Reduced Graphene Oxide Nanosheets for Direct Hydrazine/Hydrogen Peroxide Fuel Cells. Catalysts. 2021; 11(11):1372. https://doi.org/10.3390/catal11111372
Chicago/Turabian StyleHosseini, Mir Ghasem, Vahid Daneshvari-Esfahlan, Hossein Aghajani, Sigrid Wolf, and Viktor Hacker. 2021. "Palladium-Nickel Electrocatalysts on Nitrogen-Doped Reduced Graphene Oxide Nanosheets for Direct Hydrazine/Hydrogen Peroxide Fuel Cells" Catalysts 11, no. 11: 1372. https://doi.org/10.3390/catal11111372