Role of Reaction Intermediate Diffusion on the Performance of Platinum Electrodes in Solid Acid Fuel Cells
Abstract
:1. Introduction
2. Results
2.1. Structural Characterization
2.2. Electrochemical Characterization
2.2.1. Hydrogen Oxidation Reaction (HOR)
2.2.2. Oxygen Reduction Reaction (ORR)
2.2.3. Electrochemical Stability
3. Discussion
Tafel step: H2 ⇄ 2 Had | (1) |
Heyrovsky step: H2 ⇄ Had + e− + H+ | (2) |
Volmer step: Had ⇄ H+ + e− | (3) |
4. Materials and Methods
4.1. Electrode and Cell Fabrication
4.2. Physical and Electrochemical Characterization
5. Conclusions
Supplementary Materials
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Deposition Rate (nm min−1) | Film Thickness (nm) | Pt Loading (µg cm−2) | Grain Size (nm) | |
---|---|---|---|---|
Dense (0.5 Pa) | 25.9 ± 1.5 | 63 ± 4 | 136 ± 2 | 15.3 ± 2.7 |
Open-structured (5 Pa) | 34.5 ± 2.4 | 58 ± 4 | 67 ± 1 | 8.0 ± 1.7 |
Electrode Architecture | Pt Loading (µg cm−2) | ANR (mΩ cm2) | MNA (S mg−1) | Pt Utilization (g kW−1) |
---|---|---|---|---|
60 nm Ptopen-structured@CP (this work) | 67 ± 1 | 104 ± 3 | 144 ± 5 | 2.0 ± 0.1 |
60 nm Ptdense@CP (this work) | 136 ± 2 | 144 ± 1 | 51 ± 1 | 9.8 ± 0.2 |
7.5 nm PtdcMS@CDP19 | 17 | 3100 | 19 | |
PtALD@CDP14 | 1000 | 50 | 20 | <10 |
PtMOCVD@CDP13 | 1750 | 6.5 | ||
PtMOCVD@CNTs8 | 410 | 50 | 49 | 11.7 |
30 nm PtdcMS@CDPSpray20 | 64 | 745 | 21 | 2.0 |
PtImpregnation@CNTs11 | 14 | 1200 | 61 |
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Lorenz, O.; Kühne, A.; Rudolph, M.; Diyatmika, W.; Prager, A.; Gerlach, J.W.; Griebel, J.; Winkler, S.; Lotnyk, A.; Anders, A.; et al. Role of Reaction Intermediate Diffusion on the Performance of Platinum Electrodes in Solid Acid Fuel Cells. Catalysts 2021, 11, 1065. https://doi.org/10.3390/catal11091065
Lorenz O, Kühne A, Rudolph M, Diyatmika W, Prager A, Gerlach JW, Griebel J, Winkler S, Lotnyk A, Anders A, et al. Role of Reaction Intermediate Diffusion on the Performance of Platinum Electrodes in Solid Acid Fuel Cells. Catalysts. 2021; 11(9):1065. https://doi.org/10.3390/catal11091065
Chicago/Turabian StyleLorenz, Oliver, Alexander Kühne, Martin Rudolph, Wahyu Diyatmika, Andrea Prager, Jürgen W. Gerlach, Jan Griebel, Sara Winkler, Andriy Lotnyk, André Anders, and et al. 2021. "Role of Reaction Intermediate Diffusion on the Performance of Platinum Electrodes in Solid Acid Fuel Cells" Catalysts 11, no. 9: 1065. https://doi.org/10.3390/catal11091065