Abstract
A typical anode for solid oxide fuel cells (SOFC) or cathode for solid oxide electrolysis cells (SOEC) is a complex porous structure of Ni and yttria-stabilized zirconia (YSZ). The porous Ni/YSZ is usually prepared from powder mixtures of NiO and YSZ, tape casted and sintered into a dense structure and finally reduced during start-up of the SOFC/SOEC in H2 at the operating temperature of the cell (ca. 800 °C). This contribution presents environmental transmission electron microscopy (ETEM) nanoscale observations of the reduction process of a NiO/YSZ powder in H2 at temperatures up to almost 1000 °C. The study focusses on the temperature dependent dynamical morphology of the NiO/YSZ and on the possible influence of YSZ on the NiO reduction.
| Original language | English |
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| Journal | ECS Transactions |
| Volume | 64 |
| Issue number | 2 |
| Pages (from-to) | 73-80 |
| Number of pages | 8 |
| ISSN | 1938-5862 |
| DOIs | |
| Publication status | Published - 2014 |
| Event | 226th Meeting of the Electrochemical Society (ECS) and 7th Meeting of the Mexico Section of the Electrochemical Society ECS and SMEQ Joint International Meeting : Joint international meeting - Cancun, Mexico Duration: 5 Oct 2014 → 9 Oct 2014 Conference number: 226 |
Conference
| Conference | 226th Meeting of the Electrochemical Society (ECS) and 7th Meeting of the Mexico Section of the Electrochemical Society ECS and SMEQ Joint International Meeting |
|---|---|
| Number | 226 |
| Country/Territory | Mexico |
| City | Cancun |
| Period | 05/10/2014 → 09/10/2014 |
Keywords
- Solid Oxide Fuel Cells