Abstract
AbstractHigh‐temperature co‐electrolysis shows comparable performance to steam electrolysis. Current densities above 1 A cm−2 can be reached between 700 °C and 800 °C. Tailor‐made syngas is produced, mainly determined by the reactant ratio. The experimental results are supported by modeling. Durability tests with cathode‐supported cells show increased voltage degradation rates during electrolysis compared to fuel cell operation. Nickel depletion is found to be the main cause.
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