Effective hydrogen production by high temperature electrolysis with ceria-carbonate composite
Effective hydrogen production by high temperature electrolysis with ceria-carbonate composite
The high temperature electrolysis potentially offers an effective approach for large-scale and high purity hydrogen production. Besides, the research on the hybrid oxygen ion/proton conductive behavior is a hot field in the ceria-based composite field. In this present study, single cell assembled by SDC-carbonate electrolyte and Ni-based electrode was fabricated and operated in ceramic electrolysis cells (CECs) model. The effect of the relative humidity and temperature on the electrochemical performance was investigated by electrochemical impedance spectra (EIS) and polarization curves. Under an applied electrolysis voltage of 1.6 V, the maximum consumed current density is 1.2 Acm-2 in oxygen ionic conduction mode. The electrochemical performance in proton conduction mode is comparable to the oxygen ion conduction mode. The results here again demonstrate the hybrid ionic conduction of ceria-carbonate composite, and provide a promising materials system for high efficient hydrogen production. QS 2013 The China Scholarship Council (CSC), the Swedish Research Council (VR, Contract No. 621-2011-4983), the Swedish Agency for Innovation Systems (VINNOVA, Contract No. P36545–1), and the EC FP7 TriSOFC project (Contract No.303454)
hybrid oxygen ion and proton conduction, Nanoteknik, Geovetenskap och relaterad miljövetenskap, ceramic electrolysis cells, hydrogen production, ceria-carbonate composite electrolyte, Materialteknik, Nano Technology, Materials Engineering, Earth and Related Environmental Sciences
hybrid oxygen ion and proton conduction, Nanoteknik, Geovetenskap och relaterad miljövetenskap, ceramic electrolysis cells, hydrogen production, ceria-carbonate composite electrolyte, Materialteknik, Nano Technology, Materials Engineering, Earth and Related Environmental Sciences