Enhancing SOEC system lifetime by controlling inlet gas composition

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In a method for enhancing the lifetime of a solid oxide electrolysis cell system by counteracting nitridation of the threads of the in-line electrical heaters of the system, the start-up, shut-down and trip operations are done in a humidified nitrogen atmosphere on the fuel side to achieve a dew point between -70 DEG C and 23 DEG C, and in air or in carbon dioxide on the oxygen side, securing that sufficiently oxidizing conditions are always present across the whole surface of the cells on the oxygen side in the stack.

Original languageEnglish
IPCH01M 8/ 12 A N
Patent numberEP2933357
Filing date21/10/2015
Priority date14/04/2014
Priority numberEP20140164564
Publication statusPublished - 21 Oct 2015

Bibliographical note

Also published as: TW201545402 (A) WO2015158617 (A1)

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