Performance and Durability of Solid Oxide Electrolysis Cells for Syngas Production

Xiufu Sun, Ming Chen, Per Hjalmarsson, Sune Dalgaard Ebbesen, Søren Højgaard Jensen, Mogens Bjerg Mogensen, Peter Vang Hendriksen

Research output: Contribution to journalConference articleResearchpeer-review


Performance and durability of Ni/YSZ based solid oxide electrolysis cells (SOECs) for co-electrolysis of H2O and CO2 at high current density were investigated. The cells consist of a Ni/YSZ support, a Ni/YSZ fuel electrode, a YSZ electrolyte, and a LSM-YSZ oxygen electrode. The cell durability was examined at 800°C and electrolysis current density of -1 or -1.5 A/cm2 with 60% reactant (H2O+CO2) utilization. The cell voltage degradation showed a strong dependence on the electrolysis current density, with an overall cell voltage degradation rate of 0.24 mV/h at -1 A/cm2 and of 0.82 mV/h at -1.5 A/cm2. Electrochemical characterization of the cells showed that the degradation was mainly related to the LSM/YSZ electrode when operated at -1 A/cm2, whereas at increased current density (-1.5 A/cm2), both the Ni/YSZ and LSM/YSZ electrodes showed degradation.
Original languageEnglish
JournalE C S Transactions
Issue number33
Pages (from-to)77-85
Publication statusPublished - 2012
Event220th ECS Meeting - Boston, MA, United States
Duration: 9 Oct 201114 Oct 2011
Conference number: 220


Conference220th ECS Meeting
Country/TerritoryUnited States
CityBoston, MA
Internet address


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