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Title: Atomic layer deposition of ultrathin blocking layer for low-temperature solid oxide fuel cell on nanoporous substrate

An ultrathin yttria-stabilized zirconia (YSZ) blocking layer deposited by atomic layer deposition (ALD) was utilized for improving the performance and reliability of low-temperature solid oxide fuel cells (SOFCs) supported by an anodic aluminum oxide substrate. Physical vapor-deposited YSZ and gadolinia-doped ceria (GDC) electrolyte layers were deposited by a sputtering method. The ultrathin ALD YSZ blocking layer was inserted between the YSZ and GDC sputtered layers. To investigate the effects of an inserted ultrathin ALD blocking layer, SOFCs with and without an ultrathin ALD blocking layer were electrochemically characterized. The open circuit voltage (1.14 V) of the ALD blocking-layered SOFC was visibly higher than that (1.05 V) of the other cell. Furthermore, the ALD blocking layer augmented the power density and improved the reproducibility.
Authors:
; ; ; ;  [1] ;  [2] ;  [3]
  1. School of Mechanical and Aerospace Engineering, Seoul National University, San 56-1, Daehak dong, Gwanak-gu, Seoul 151-742 (Korea, Republic of)
  2. Graduate School of Convergence Science and Technology, Seoul National University, 864-1, Iui-dong, Yeongtong-gu, Suwon 443-270 (Korea, Republic of)
  3. Manufacturing Systems and Design Engineering Program, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul 139-743 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22392118
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Vacuum Science and Technology. A, Vacuum, Surfaces and Films; Journal Volume: 33; Journal Issue: 1; Other Information: (c) 2014 American Vacuum Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM OXIDES; CERIUM OXIDES; DEPLETION LAYER; DEPOSITS; DOPED MATERIALS; ELECTRIC POTENTIAL; ELECTROCHEMISTRY; ELECTROLYTES; GADOLINIUM OXIDES; PERFORMANCE; POWER DENSITY; SOLID OXIDE FUEL CELLS; SUBSTRATES; VAPOR DEPOSITED COATINGS; YTTRIUM OXIDES; ZIRCONIUM OXIDES