SET Proceedings 2978-4387 Caravel Press 10.65582/set.2008.196 2008.196 Preparation and Characterization of Cu/YSZ Composite for High Temperature Electrolysis KimJongmin jmkim@iae.re.kr KangKyoung-Hoon khkang@iae.re.kr HongHyun Seon hshong@iae.re.kr Center for Plant Engineering, Institute for Advanced Engineering, 633-2 Goan-ri, Baegam-myeon, Cheoin-gu, Yongin-si, Gyeonggi-do, 449-863, Republic of Korea 24082008 7 1 978-1-995850-08-5 1419 1423 24 August 2008 © 2008 Copyright WSSET 2008

The Cu/YSZ (Y2O3 stabilized ZrO2) composite for high temperature electrolysis (HTE) was successfully prepared by high-energy ball-milling method. Thus the synthesized Cu/YSZ composite was characterized using various analytical tools such as XRD, SEM and laser diffraction and scattering method. The Cu/YSZ cermet was composed of crystalline Cu and YSZ, in a sub-micron scale and had even distribution without aggregated particle. Electrical conductivity of sintered Cu/YSZ cermet pellet thus prepared was measured by 4-probe technique and compared with that of conventional Ni/YSZ cermet. The effect of composites composition on the electrical conductivity was investigated and the marked increase in electrical conductivity for copper contents greater than 40 vol% in the composite was explained by percolation threshold. Therefore, hydrogen production performance is expected better than Ni/YSZ cermet as result that measured a electrical conductivity.

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