Carbon formation within nickel-based solid oxide fuel cell (SOFC) anodes exposed to carbonaceous fuels typically leads to reduced operational lifetimes and performance, and can eventually lead to catastrophic failure through cracking and delamination. In-situ Raman spectroscopy has been shown to be a powerful characterization tool for the investigation of the dynamics of physical processes occurring within operational SOFCs in real time. Here we investigate the dynamics of carbon formation on a variety of nickel-based SOFC anodes as a function of temperature, fuel and electrical loading using Raman spectroscopy. We show that the rate of carbon formation throughout the SOFC anode can be significantly reduced through a careful consideration of the SOFC anode material, design and operational conditions. © The Electrochemical Society.
Bibliographical noteKAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): KUK-F1-020-21
Acknowledgements: The authors would like to thank the Engineering and Physical Sciences ResearchCouncil (EPSRC) for funding, in particular the Supergen fuel cell program and a CareerAcceleration Fellowship for Gregory Offer and funding under EP/J003085/1 (RCM).This publication was also based on work supported by Award No KUK-F1-020-21, madeby King Abdullah University of Science and Technology (KAUST). Additionally, wewould like to thank Stephen Cussell and David Williams for their help in the fabricationof the experimental rig.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.