Porous structure optimization of electrospun carbon materials

Autor:	Yu. M. Volfkovich, A. G. Buyanovskaya, D. Yu. Razorenov, Iv. I. Ponomarev, Yu. A. Volkova, K. M. Skupov, Valentin E. Sosenkin, V. N. Talanova, I. I. Ponomarev
Rok vydání:	2020
Předmět:	010405 organic chemistry Chemistry Polyacrylonitrile General Chemistry Electrolyte Porosimetry 010402 general chemistry 01 natural sciences 0104 chemical sciences Hydrophilization chemistry.chemical_compound Membrane Chemical engineering Nanofiber Specific surface area Mesoporous material
Zdroj:	Russian Chemical Bulletin. 69:1106-1113
ISSN:	1573-9171 1066-5285
Popis:	According to standard contact porosimetry data, treatment of electrospun pyropolymer mats based on pyrolyzed polyacrylonitrile and polybenzimidazole (PBI) nanofibers with a mixture of sulfuric and nitric acids causes a drastic increase in the specific surface area of macro- and mesopores and complete disappearance of micropores. Acid treatment is followed by hydrophilization of pores with radii r < 10 nm. Taken altogether, these effects lead to higher performance of the membrane-electrode assembly of a high-temperature polymer electrolyte membrane fuel cell based on PBI membrane with the cathode made of the platinized acid-treated material.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::baccf2ed6d585b7d25b362d6b388491a https://doi.org/10.1007/s11172-020-2875-7 Zobrazit plný text záznamu Full text from SpringerLink