Solid oxide fuel cell (SOFC) is the most efficient energy conversion technology of alltime
in producing electricity from fuels. However, temperature-driven premature
degradation is one of the biggest problems that impedes the widespread use of this
technology. Understanding the temperature distribution of an operating SOFC is central
to mitigate such degradations as well as to further enhance the performance.
The published efforts on SOFC temperature sensing, except small button cells, are mainly
confined to measure temperature only from the gas channels (fuel/ air) with relatively low
spatial resolution. However, the electrodes’ temperature distribution measured with an
adequate spatial resolution is more desirable than the gas temperature to investigate a
cells’ behaviour and its correlation to a stack’s performance. The insufficiency of
technology to in situ monitor the cell surface temperature distribution with an adequate
spatial resolution was identified as a crucial research gap in the SOFC development cycle.
Therefore, this research is aimed at developing a sensing technology to monitor in situ the
cell surface temperature distribution of an operating SOFC with an adequately high
spatial resolution and applying that technology to get a better insight into SOFC operation. [Continues.]
A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy of Loughborough University.