The Effect of the Stabilization and Carbonization Temperatures on the Properties of Microporous Carbon Nanofiber Cathodes for Fuel Cells on Polybenzimidazole Membrane
| Autor: | Iv. I. Ponomarev, K. M. Skupov, Yu. M. Volfkovich, Valentin E. Sosenkin, I. I. Ponomarev, Alexander D. Modestov, D. Yu. Razorenov, Yu. A. Volkova |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Polymers and Plastics Carbonization Carbon nanofiber Polyacrylonitrile chemistry.chemical_element 02 engineering and technology General Chemistry Porosimetry Microporous material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound chemistry Chemical engineering Specific surface area Materials Chemistry 0210 nano-technology Platinum Pyrolysis |
| Zdroj: | Polymer Science, Series C. 62:231-237 |
| ISSN: | 1555-614X 1811-2382 |
| DOI: | 10.1134/s1811238220020149 |
| Popis: | Materials based on pyrolyzed electrospun nanofiber polyacrylonitrile were studied by the method of standard contact porosimetry. An influence of oxidation and pyrolysis temperatures on specific surface area. It was shown that an increase of oxidation temperature from 300 to 350°C and of pyrolysis temperature from 900 to 1000°C leads to a decrease of pore specific surface area and to a decrease of a part of micropore specific surface area. Platinated samples showed sufficient values of electrochemically active platinum surface area (12‒35 m2 g $$_{{{\text{Pt}}}}^{{ - 1}}$$ ) and were tested as cathodes for high temperature polymer electrolyte membrane fuel cell. An increase in power density was found when a part of electrode micropore specific surface area was decreasing. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink