2,6-Diaminopyridine-Based Polyurea as an ORR Electrocatalyst of an Anion Exchange Membrane Fuel Cell
Abstract
:1. Introduction
2. Materials and Methods
2.1. Preparation
2.1.1. Preparation of Co-PUr (The Catalyst Precursor)
2.1.2. Preparation of Co–N–Cs
2.2. Characterization
2.2.1. Fourier-Transform Infrared (FTIR) Spectroscopy
2.2.2. Scanning Electron Microscopy (SEM)
2.2.3. High-Resolution Transmission Electron Microscopy (HR-TEM)
2.2.4. X-ray Diffraction Spectroscopy (XRD)
2.2.5. X-ray Photoelectronic Spectroscopy (XPS)
2.2.6. Raman Spectroscopy
2.2.7. Energy Dispersive X-ray Spectroscopy (EDs)
2.2.8. Brunauer–Emmett–Teller (BET) Analysis
2.2.9. Electrochemical Measurements
Current–Voltage (C–V) and Linear Sweep Voltammetry (LSV) Curves
Membrane Electrode Assembly (MEA)
Single Cell Testing
3. Results and Discussion
3.1. FTIR Spectra
3.2. SEM Micropictures
3.3. HR-TEM Micropictures
3.4. XRD Pattern
3.5. XPS
3.6. Raman Spectroscopy
3.7. EDs
3.8. BET Surface Area and Pore Size
3.9. Electrochemical Measurements
3.9.1. C–V and LSV Curves
3.9.2. Single-Cell Testing
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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CoNC- | ID/IG a |
---|---|
700A600 | 1.04 |
800A700 | 1.00 |
900A800 | 0.99 |
CoNC- | C | N | O | Co |
---|---|---|---|---|
700A600 | 67.10 | 19.80 | 12.21 | 0.80 |
800A700 | 83.80 | 8.12 | 6.85 | 1.23 |
900A800 | 83.80 | 9.30 | 5.10 | 1.80 |
Co–N–Cs | BET Surface Area (m2g−1) a | BJH Adsorption Average Pore Diameter (nm) b |
---|---|---|
700A600 | 177.74 | 4.17 |
800A700 | 369.43 | 5.24 |
900A800 | 447.81 | 6.18 |
Catalysts (Pt/C & CoNC-) | On-Set Voltage (V) a | Half-Wave Voltage (V) b | LRCD (mAcm−2) c | Tafel Slope (mVdec−1) d | # of e-Transferred e | Pmax f |
---|---|---|---|---|---|---|
700A600 | 0.78 | 0.39 | −2.58 | 164.1 | 2.5 | 35.8 |
800A700 | 0.85 | 0.41 | −3.02 | 165.9 | 3.5 | 67.0 |
900A800 | 0.88 | 0.82 | −5.10 | 66.2 | 4.0 | 227.7 |
Pt/C | 0.89 | 0.83 | −5.26 | 67.9 | - | 285.3 |
Cathode Catalyst | Cathode Loading (mgcm−2) | Anode Catalyst | Power Density (mWcm−2) | Ref. |
---|---|---|---|---|
Co–N–C | 0.8 | 20 wt% Pt/C | 228 | This work |
Pt/C | 0.8 | 20 wt% Pt/C | 285 | This work |
Co–N–C | 2.0 | 60 wt% Pt/C | 182 | [47] |
N-dopes CDC/CNT | 0.4 | 40 wt% Pt/C | 310 | [48] |
ZIF-CB-700 | 0.4 | 60 wt% Pt/C | 122 | [49] |
Co/N/MWCNT | 0.6 | 40 wt% Pt/C | 115 | [50] |
Co/N/MWCNT | 0.6 | 40 wt% Pt/C | 115 | [50] |
Co/N/CDC | 0.8 | 60 wt% Pt/C | 78 | [51] |
Co-Fe3O4/C | 0.8 | Pt/C | 114 | [52] |
Co–N–C | 0.4 | 60% Pt/C | 181 | [53] |
Co–N–CDC/CNT | 0.4 | Pt-Ru/C (wt% 50/25/25) | 577 | [47] |
FeCoNC-at | 2.0 | Pt-Ru/C (wt% 50/25/25) | 415 | [54] |
CoFe2O4 on Vulcan XC-72 | 2.4 | Pt-Ru | 670 | [55] |
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Wang, Y.-Z.; Hsieh, T.-H.; Huang, Y.-C.; Ho, K.-S. 2,6-Diaminopyridine-Based Polyurea as an ORR Electrocatalyst of an Anion Exchange Membrane Fuel Cell. Polymers 2023, 15, 915. https://doi.org/10.3390/polym15040915
Wang Y-Z, Hsieh T-H, Huang Y-C, Ho K-S. 2,6-Diaminopyridine-Based Polyurea as an ORR Electrocatalyst of an Anion Exchange Membrane Fuel Cell. Polymers. 2023; 15(4):915. https://doi.org/10.3390/polym15040915
Chicago/Turabian StyleWang, Yen-Zen, Tar-Hwa Hsieh, Yu-Chang Huang, and Ko-Shan Ho. 2023. "2,6-Diaminopyridine-Based Polyurea as an ORR Electrocatalyst of an Anion Exchange Membrane Fuel Cell" Polymers 15, no. 4: 915. https://doi.org/10.3390/polym15040915