LaScO3-based electrolyte for protonic ceramic fuel cells: Influence of sintering additives on the transport properties and electrochemical performance
| Autor: | Maxim V. Ananyev, S. M. Beresnev, D.A. Osinkin, A. Yu. Stroeva, M. S. Plekhanov, A.S. Lesnichyova, V.A. Vorotnikov, E.S. Tropin, A.V. Kuzmin, D.M. Solodyankina, Andrey S. Farlenkov, S. A. Belyakov |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Supporting electrolyte Energy Engineering and Power Technology Sintering 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology Microstructure 01 natural sciences Slip (ceramics) 0104 chemical sciences Chemical engineering visual_art Hydrogen fuel visual_art.visual_art_medium Relative density Ceramic Electrical and Electronic Engineering Physical and Theoretical Chemistry 0210 nano-technology |
| Zdroj: | Journal of Power Sources. 466:228255 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2020.228255 |
| Popis: | In this work, the effect of the content of CuO, ZnO, Al2O3, NiO, Fe2O3, Co3O4 and MoO3 additives on the sinterability, microstructure, and electrical properties of La0.9Sr0.1ScO3-α proton-conducting oxide in a form of tubes produced by slip casting is studied. It is shown that the relative density of La0.9Sr0.1ScO3-α tubes without sintering aids is ~86%. The introduction of 1.0 wt % ZnO, Al2O3, NiO or 0.5 ÷ 1.0 wt % Co3O4 leads to a relative density of ceramics higher than 95%. Among dense ceramic tubes, LSS +0.5 wt % Co3O4 has the highest electrical conductivity. The introduction of 1 wt % Fe2O3 additive does not affect the sinterability of the LSS, and 1 wt % CuO and MoO3 inhibits LSS sintering. Single protonic ceramic fuel cells based on LSS +0.5 wt % Co3O4 and LSS +1.0 wt % NiO supporting electrolyte tubes with a thickness of 300 μm are studied. The maximum power density of about 30 mW/cm2 at 800 °C was obtained for a cell based on LSS +0.5 wt % Co3O4 using wet hydrogen as fuel and air as an oxidizing gas. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect