Suitability of Pr2–xCaxNiO4+δ as cathode materials for electrochemical devices based on oxygen ion and proton conducting solid state electrolytes
| Autor: | E. Pikalova, A.A. Kolchugin, S. V. Plaksin, Maxim V. Ananyev, Andrey S. Farlenkov, Dmitry Medvedev, N. M. Bogdanovich, L.B. Vedmid, J. Lyagaeva |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Energy Engineering and Power Technology Sintering chemistry.chemical_element 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrochemistry 01 natural sciences Oxygen Cathode 0104 chemical sciences law.invention Fuel Technology Chemical engineering chemistry law Electrode Solid oxide fuel cell 0210 nano-technology Chemical composition |
| Zdroj: | International Journal of Hydrogen Energy. 45:13612-13624 |
| ISSN: | 0360-3199 |
| Popis: | In order to develop economically competitive solid oxide fuel cell (SOFC) systems it is necessary to design new functional materials with the purpose of enhancing their performance, extending operational lifetime and reducing the cost. The present work focuses on the study of Pr2-xCaxNiO4+δ cathode materials prepared by a simple and cheap conventional solid state reaction method. The structure, oxygen nonstoichiometry, electrical properties and chemical compatibility of the materials with a number of well-known oxygen ion and proton conducting electrolytes were systematically investigated. Chemical composition (Ca content) and technological factors (powders pre-history, electrodes' sintering temperature), as well as external parameters (temperature, air humidity) were correlated with the electrochemical performance of the electrodes to determine the optimal compositions and conditions. Based on this study and testing results of the single anode-supported cell with BaCe0.89Gd0.1Cu0.01O3-δ electrolyte, the Pr1.7Ca0.3NiO4+δ-based electrode compositions are proposed for preferred usage in SOFCs in place of Pr2NiO4+δ electrode. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect