Silver (Ag) as anode and cathode current collectors in high temperature planar solid oxide fuel cells

Planar electrolyte supported solid oxide fuel cells were operated at 900 °C with humidified H 2 for 200 h using silver mesh and paste for cathode current collection. Continuous potentiostatic tests at 0.7 V appeared to induce migration of Ag towards electrode-electrolyte interphase, while continuous...

Full description

Saved in:
Bibliographic Details
Published in:International journal of hydrogen energy 2011, Vol.36 (1), p.779-786
Main Authors: De Silva, K. Channa R., Kaseman, Brian J., Bayless, David J.
Format: Article
Language:English
Subjects:
Alternative fuels. Production and utilization
Anodes
Applied sciences
Carbon dioxide
Carbon monoxide
Cathodes
Coal syngas
Current collection
Current collectors
Energy
Exact sciences and technology
Fuels
Hydrogen
Migration
Silver
Silver (Ag)
Solid oxide fuel cells
Solid oxide fuel cells (SOFCs)
Thermo-electro migration
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Planar electrolyte supported solid oxide fuel cells were operated at 900 °C with humidified H 2 for 200 h using silver mesh and paste for cathode current collection. Continuous potentiostatic tests at 0.7 V appeared to induce migration of Ag towards electrode-electrolyte interphase, while continuous OCV tests caused no mass transport. Similar SOFCs fueled by coal syngas at 850 °C using Ag for both anode and cathode current collection indicated little, if any, Ag migration; providing the possibility of employing Ag for 100 h laboratory scale tests using coal-derived syngas. Use of high temperature steam, carbon dioxide and carbon monoxide did not result in the formation of silver carbonates.
ISSN:0360-3199
1879-3487
DOI:10.1016/j.ijhydene.2010.10.034