Characterization of (Ni-Cu)/YSZ cermet composites fabricated using high-energy ball-milling: effect of Cu concentration on the composite performance

Title
Characterization of (Ni-Cu)/YSZ cermet composites fabricated using high-energy ball-milling: effect of Cu concentration on the composite performance
Author
이선영
Keywords
(Ni-Cu)/YSZ composite; Cermet; High-energy ball-milling; Hydrogen; Solid oxide fuel cell; HIGH-TEMPERATURE ELECTROLYSIS; HYDROGEN-PRODUCTION; STEAM ELECTROLYSIS; ANODE MATERIALS; FUEL-CELLS; HEAT
Issue Date
2015-05
Publisher
ELSEVIER SCI LTD
Citation
CERAMICS INTERNATIONAL, v. 41, Page. 6122-6126
Abstract
"Bimetallic composite materials, also known as (Ni-Cu)/YSZ cermets, were successfully fabricated using high-energy ball-milling for possible use as cathode materials in high-temperature electrolysis cells. The fabricated (Ni-Cu)/YSZ cermet was characterized using XRD, SEM and laser diffraction and scattering analyses. XRD analysis demonstrated that the (Ni-Cu)/YSZ cermet powders were bimetallic Ni-Cu composites with YSZ particles randomly dispersed over the metal surface. Increasing the Ni/Cu ratio resulted in a decrease in the (Ni-Cu)/YSZ particle size and an increase in electrical conductivity. The increase in conductivity is attributed to the improved connectivity between the (Ni-Cu)/YSZ particles caused by the decrease in particle size. For this reason, 50% Ni-10% Cu/YSZ cermet was chosen to be the HTE cathode in a self-supporting planar unit cell, and its electrochemical performance was examined. Furthermore, the effects of high-energy ball-milling parameters on the morphology and electrochemical performance of (Ni-Cu)/YSZ cermets were characterized. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved."
URI
http://www.sciencedirect.com/science/article/pii/S0272884215000140http://hdl.handle.net/20.500.11754/33942
ISSN
0272-8842; 1873-3956
DOI
10.1016/j.ceramint.2014.12.158
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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