The effect of morphological difference and hydride incorporation on the activity of Pd/C catalysts in direct alkaline formate fuel cell
| Autor: | Sujik Hong, Hongsun Hwang, Chang Hyun Lee, Jin Pyo Hwang, Jaeyoung Lee, Jin Won Kim |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Hydride
Inorganic chemistry chemistry.chemical_element 02 engineering and technology General Chemistry Borane 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Catalysis 0104 chemical sciences chemistry.chemical_compound chemistry Electronic effect Formate 0210 nano-technology Dimethylamine Palladium |
| Zdroj: | Catalysis Today. 359:28-34 |
| ISSN: | 0920-5861 |
| DOI: | 10.1016/j.cattod.2019.06.042 |
| Popis: | Palladium (Pd) on carbon support, electron-enriched by hydrogen incorporation (Pd-H/C), is synthesized via dimethylamine borane complex at multiple temperatures and used for the oxidation of formate (HCOO−). The electronic effect of H is confirmed by physicochemical and electrochemical analysis. Physicochemical analysis revealed no significant changes in the Pd-H/C structures, with changes only in the particle size and dispersion. Pd-H/C 0 °C showed the best catalytic activity for the oxidation of HCOO−, even though it possesses the less electrochemical surface area than commercial Pd/C. Its remarkable power density of 272 mW cm−2 at the nominal cell voltage of 0.5 V is recorded in single cell operation. The observed performance is attributed to the electronic effect brought by the incorporation of H in the Pd lattice. Still the electronic effect of H does not always compensate for the small ECSA caused by large particle size and severe agglomeration. |
| Databáze: | OpenAIRE |
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