The influence of ionic liquids cation on the properties of sulfonated poly (ether ether ketone)/polybenzimidazole blends applied in PEMFC
| Autor: | Michèle Oberson de Souza, Letícia Guerreiro da Trindade, Emilse M.A. Martini, Rapher Donizete Moreira Santos, Pedro Carvalho Martins, Robert da Silva Paiva, Edson A. Ticianelli, Katiúscia M.N. Borba, Lilian A.F. Vermeersch, Letícia Zanchet |
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| Přispěvatelé: | Universidade Federal do Rio Grande do Sul, Universidade Estadual Paulista (Unesp), Universidade de São Paulo (USP), Universidade Federal de São Carlos (UFSCar) |
| Rok vydání: | 2019 |
| Předmět: |
Ketone
Polymers and Plastics Proton exchange membrane fuel cell Ether 02 engineering and technology Conductivity Ionic liquid 010402 general chemistry 01 natural sciences chemistry.chemical_compound Materials Chemistry chemistry.chemical_classification Hydrogen bond Organic Chemistry CÉLULAS A COMBUSTÍVEL 021001 nanoscience & nanotechnology Polybenzimidazole 0104 chemical sciences Membrane Sulfonated poly (ether ether ketone) chemistry Chemical engineering Amine gas treating 0210 nano-technology |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| Popis: | Made available in DSpace on 2019-10-06T15:53:56Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-09-28 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Blends modified with ionic liquid (IL) can have their conductivity improved at elevated temperatures and low relative humidity (RH) making them suitable for proton exchange membrane fuel cells (PEMFCs) applications. This study explores the synthesis and characterization of sulfonated poly (ether ether ketone)/polybenzimidazole/3-triethylammonium hydrogen sulfate (TEA-PS.HSO4) or 1-butylimidazole hydrogen sulfate (BImH.HSO4) ionic liquids blends to be applied as a novel proton exchange membranes (PEM). The oxidative stability augments with the increase of PBI content, and the membrane conductivity enhances with the increase of the IL content. Additionally, the H bond formed between the acid proton of the IL cation and the amine group of PBI avoids the IL leaching. In the PEMFC applications, the best results were obtained using the SP10/TEA5 membrane (10 and 5 wt% of PBI and TEA-PS.HSO4 respectively) at 100 °C. A high Open Circuit Potential (OCP) value was achieved (0.97 V) and an increase of 126% of the density current (1.83 A cm−2) when compared with a pure SPEEK membrane (0.81 A cm−2). These results indicate that these composite membranes have a high potential for PEMFC applications. LRC - Institute of Chemistry Universidade Federal do Rio Grande do Sul, P.O. Box 15003 Department of Chemistry Universidade Estadual Paulista – Unesp, P.O. Box 473 São Carlos Institute of Chemistry University of São Paulo, P.O. Box 780 Chemistry Dept. Federal University of São Carlos, C.P. 676 Department of Chemistry Universidade Estadual Paulista – Unesp, P.O. Box 473 FAPESP: 2013/07296-2 FAPESP: 2013/16930-7 |
| Databáze: | OpenAIRE |
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