Investigation of factors affecting the performance of a single-layer nanocomposite fuel cell
| Autor: | Muhammad Asghar, Sami Jouttijärvi, Peter Lund |
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| Přispěvatelé: | New Energy Technologies, Department of Applied Physics, Aalto-yliopisto, Aalto University |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Varying composition
Materials science Nanocomposite Doping Oxide Ionic bonding chemistry.chemical_element 02 engineering and technology General Chemistry LNZ 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Catalysis 0104 chemical sciences Amorphous solid chemistry.chemical_compound chemistry Chemical engineering Ionic conductivity Lithium 0210 nano-technology Porosity Single-layer fuel cell |
| Popis: | A large set of single-layer fuel cells utilizing lithium nickel zinc oxide (LNZ) as semiconducting material and doped ceria -based ionic conductors with varying composition were fabricated and characterized by both microscopic and macroscopic methods. Microstructural analysis showed that LiNiO, LiZnO and doped ceria formed crystalline phases, whereas alkali carbonates were in amorphous state. The ionic conductivity of the cell was found to be the most crucial performance-limiting factor. Using of catalytically active current collector improved the cell performance if the ionic conductivity through the cell was suitable. Controlling the porosity and optimizing the mass ratio of semiconductor and ionic conductor affected the cell performance as well. An optimized device achieved a power density of 300 mW/cm2 at 600 °C. |
| Databáze: | OpenAIRE |
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