Fabrication and Characterisation of Nanoscale Ni-CGO Electrode from Nano-Composite Powders
| Autor: | Jawwad A. Darr, Mengzheng Ouyang, Jingyi Chen, Alan Atkinson, Nigel P. Brandon, Paul Boldrin, Xinhua Liu |
|---|---|
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | ECS Transactions. 91:1799-1805 |
| ISSN: | 1938-5862 1938-6737 |
| Popis: | Incorporating nanoparticles into SOC electrode is a viable method to improve the electrochemical performance. In this work, nanoparticles of NiO and gadolinia-doped ceria (CGO) approximately 10 nm in diameter fabricated using a continuous hydrothermal flow synthesis are made into nano-structured SOC fuel electrodes via mixing and co-sintering. Both the Ni and CGO are of 50-100 nm in diameter in the final electrode. FIB-SEM 3-D tomography is carried out on the nanoscale Ni-CGO electrode which has been aged for 70 h, showing a high active triple phase boundary density of 3 µm-2 and a high active double phase boundary density of 2 µm-1. The total polarisation resistance of the electrode is stable at 0.20 Ω cm2 under open circuit conditions at 800 °C annealing in humidified 5% H2-N2. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|