Synthesis and characterization of BaGa2O4 and Ba3Co2O6(CO3)0.6 compounds in the search of alternative materials for Proton Ceramic Fuel Cell (PCFC) |
| |
| Institution: | 1. Universidad Industrial de Santander, INTERFASE, Bucaramanga, Colombia;2. Universidad de la República, Facultad de Química, Cryssmat-Lab/DETEMA, Montevideo, Uruguay;3. Universidad de los Andes, Departamento de Química, Bogotá, Colombia;4. Université. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France;5. AGH University of Science and Technology, Faculty of Energy and Fuels, Krakow, Poland;6. Centro Atómico Bariloche, Instituto Balseiro, Comisión Nacional de Energía Atómica, Av. Bustillo 9500, 8400 S. C. de Bariloche, Argentina;1. Universidad Industrial de Santander, INTERFASE, Bucaramanga, Colombia;2. Universidad de la Republica, Facultad de Química, Cryssmat-Lab/Cátedra de Física/DETEMA, Montevideo, Uruguay;3. Université de Lille, CNRS UMR 8181, Unité de Catalyse et Chimie du Solide (UCCS), ENSCL, F-59000 Lille, France;4. AGH University of Science and Technology, Faculty of Energy and Fuels, al. A. Mickiewicza 30, 30-059 Krakow, Poland |
| |
| Abstract: | BaGa2O4 and Ba3Co2O6(CO3)0.6 compounds were studied as electrolyte and cathode materials for Proton Ceramic Fuel Cells (PCFC), respectively. Not only BaGa2O4 rapidly reacts with atmospheric H2O and CO2 and leads to a progressive material decomposition, but it does not present real hydration properties in normal conditions of pressure. On the other hand, the basic cobalt oxocarbonate Ba3Co2O6(CO3)0.6 exhibits an interesting tendency for weight uptake and formation of hydrogencarbonate groups in moist heating/cooling conditions. This material was therefore considered for complementary studies in order to confirm its potential use as mixed proton-electron conductor, taking into account the ordered intergrowth of carbonates and face sharing Co-octahedra columns forming a pseudo-one-dimensional structure. Some preliminary results concerning electrochemical properties of the barium cobalt oxocarbonate as a PCFC cathode are also described and show at the moment modest performance, possibly related to a hydrated/carbonated surface layer contribution and/or the lack of electron percolation within the electrode layer. |
| |
| Keywords: | Fuel cell Ceramic Proton conductor Electrolyte Cathode |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
