Fabrication using sequence wet-chemical coating and electrochemical performance of Ni–Fe-foam-supported solid oxide electrolysis cell for hydrogen production from steam
| Autor: | T. Jiwanuruk, S. Peng-Ont, Thana Sornchamni, Nichaporn Sirimungkalakul, Pattaraporn Kim-Lohsoontorn, W. Ngampuengpis, P. Puengjinda, R. Visvanichkul |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Electrolytic cell Oxide Energy Engineering and Power Technology 02 engineering and technology Electrolyte engineering.material 010402 general chemistry Electrochemistry 01 natural sciences law.invention chemistry.chemical_compound Coating law Hydrogen production Renewable Energy Sustainability and the Environment 021001 nanoscience & nanotechnology Condensed Matter Physics Cathode 0104 chemical sciences Anode Fuel Technology Chemical engineering chemistry engineering 0210 nano-technology |
| Zdroj: | International Journal of Hydrogen Energy. 46:4903-4916 |
| ISSN: | 0360-3199 |
| Popis: | Ni–Fe-alloy-foam supported solid oxide electrolysis cell with an arrangement of nickle and Sc0.1Ce0.005Gd0.005Zr0.89O2 (Ni-SCGZ) cathode, SCGZ electrolyte and Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) anode is successfully fabricated by the sequence wet-chemical coating. The multi-layer cathode with a gradient of thermal expansion coefficient (TEC) is deposited on the alloy-foam support. Two-step firing processes are applied including cathode pre-firing (1373 K, 2 h) and electrolyte sintering (1623 K, 4 h) using slow heating rate enhanced with compressive loading. The fabricated cell shows current density of −0.95 Acm−2 at 1.1 V with H2O:H2 = 70:30 and 1073 K, providing hydrogen production rate at 4.95 × 10−6 mol s−1. However, performance degradation was observed with the rate of 0.08 V h−1, which can be ascribed to the delamination of BSCF anode under operating at high current density. |
| Databáze: | OpenAIRE |
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