Kim, H. Ahn, K. Kim, B. Lee, J. Chung, Y.-C. Kim, H.-R. Lee, J.-H. 2024-01-20T13:34:43Z 2024-01-20T13:34:43Z 2021-08-31 2012-11 1229-7801 https://pubs.kist.re.kr/handle/201004/128750 Hybridization of dense ceramic membranes for hydrogen separation with an electronically conductive metallic phase is normally utilized to enhance the hydrogen permeation flux and thereby to increase the production efficiency of hydrogen. In this study, we developed a nickel and proton conducting oxide (BaCe0.9Y0.1O3-δ: BCY) based cermet (ceramic-metal composites) membrane. Focused on the general criteria in that the hydrogen permeation properties of a cermet membrane depend on its microstructural features, such as the grain size and the homogeneity of the mix, we tried to optimize the microstructure of Ni-BCY cermets by controlling the fabrication condition. The Ni-BCY composite powder was synthesized via a solid-state reaction using 2NiCO3·3Ni(OH)2· 4H2O, BaCeO3, CeO2 and Y2O 3 as a starting material. To optimize the mixing scale and homogeneity of the composite powder, we employed a high-energy milling process. With this high-energy milled composite powder, we could fabricate a fine-grained dense membrane with an excellent level of mixing homogeneity. This controlled Ni-BCY cermet membrane showed higher hydrogen permeability compared to uncontrolled Ni-BCY cermets created with a conventionally ball-milled composite powder. Korean Ball-milled Ceramic metal composites Cermet membranes Composite powders Dense ceramic membrane Dense membrane Grain size High energy High-energy milling process Hydrogen permeability Hydrogen permeation Hydrogen permeation flux Hydrogen separation Metallic phase Microstructural features Microstructural homogeneity Ni-BCY Production efficiency Proton-conducting oxides Ceramic membranes Electric conductivity Membranes Microstructural evolution Milling (machining) Mixing Nickel Optimization Permeation Powder metals Solid state reactions Cermets Improved microstructural homogeneity of Ni-BCY cermets membrane via high-energy milling Article 10.4191/kcers.2012.49.6.648 1 Journal of the Korean Ceramic Society, v.49, no.6, pp.648 - 653 Journal of the Korean Ceramic Society 49 6 648 653 scopus kci ART001714176 2-s2.0-84872009074 Article Ball-milled Ceramic metal composites Cermet membranes Composite powders Dense ceramic membrane Dense membrane Grain size High energy High-energy milling process Hydrogen permeability Hydrogen permeation Hydrogen permeation flux Hydrogen separation Metallic phase Microstructural features Microstructural homogeneity Ni-BCY Production efficiency Proton-conducting oxides Ceramic membranes Electric conductivity Membranes Microstructural evolution Milling (machining) Mixing Nickel Optimization Permeation Powder metals Solid state reactions Cermets Cermets Hydrogen permeation Membrane Ni-BCY