Advancing direct ethanol fuel cell operation at intermediate temperature by combining Nafion-hybrid electrolyte and well-alloyed PtSn/C electrocatalyst
| Autor: | Marcelo Linardi, Elisabete I. Santiago, Mauro André Dresch, Bruno R. Matos, Hebe M. Villullas, Denis Ricardo Martins de Godoi, Fabio C. Fonseca |
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| Přispěvatelé: | IPEN/CNEN-SP, Universidade Estadual Paulista (Unesp) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Energy Engineering and Power Technology 02 engineering and technology Electrolyte 010402 general chemistry Electrocatalyst Electrochemistry 01 natural sciences chemistry.chemical_compound Nafion Proton transport IT-DEFC Renewable Energy Sustainability and the Environment Hybrid electrolyte Nafion-SiO2 021001 nanoscience & nanotechnology Condensed Matter Physics Direct-ethanol fuel cell 0104 chemical sciences Fuel Technology Membrane chemistry Chemical engineering Direct ethanol fuel cell PtSn/C 0210 nano-technology Triple phase boundary |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| Popis: | Made available in DSpace on 2021-06-25T11:12:13Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-04-06 The advancement of direct ethanol fuel cell (DEFC) represents a real challenge to electrochemical science because ethanol changes significantly the triple phase boundary properties such as the redox reactions and the proton transport. Ethanol molecules promote poor fuel cell performance due to their slow oxidation rate, reduction of the proton transport due to high affinity of ethanol by the membrane, and due to mixed potential when the ethanol molecules reach the cathode by crossover. DEFC performance has been improved by advances in the membranes, e.g., low ethanol crossover polymer composites, or electrode materials, e.g., binary/ternary catalysts. Herein, high temperature (130 °C) DEFC tests were systematically investigated by using optimized electrode and electrolyte materials: Nafion-SiO2 hybrid electrolyte and well-alloyed PtSn/C electrocatalyst. By optimizing both the electrode and the electrolyte in conjunction, DEFCs operating at 130 °C exhibited a threefold increase on performance as compared to standard commercially available materials. Instituto de Pesquisas Energéticas e Nucleares IPEN/CNEN-SP, Av. Prof. Lineu Prestes, 2242 Instituto de Química Universidade Estadual Paulista UNESP, Rua Prof. Francisco Degni, 55 Instituto de Química Universidade Estadual Paulista UNESP, Rua Prof. Francisco Degni, 55 |
| Databáze: | OpenAIRE |
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