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High-performance micro-solid oxide fuel cells fabricated on nanoporous anodic aluminum oxide templates

Abstract

Micro-solid oxide fuel cells ({mu}-SOFCs) are fabricated on nanoporous anodic aluminum oxide (AAO) templates with a cell structure composed of a 600-nm-thick AAO free-standing membrane embedded on a Si substrate, sputter-deposited Pt electrodes (cathode and anode) and an yttria-stabilized zirconia (YSZ) electrolyte deposited by pulsed laser deposition (PLD). Initially, the open circuit voltages (OCVs) of the AAO-supported {mu}-SOFCs are in the range of 0.05 V to 0.78 V, which is much lower than the ideal value, depending on the average pore size of the AAO template and the thickness of the YSZ electrolyte. Transmission electron microscopy (TEM) analysis reveals the formation of pinholes in the electrolyte layer that originate from the porous nature of the underlying AAO membrane. In order to clog these pinholes, a 20-nm thick Al{sub 2}O{sub 3} layer is deposited by atomic layer deposition (ALD) on top of the 300-nm thick YSZ layer and another 600-nm thick YSZ layer is deposited after removing the top intermittent Al{sub 2}O{sub 3} layer. Fuel cell devices fabricated in this way manifest OCVs of 1.02 V, and a maximum power density of 350 mW cm{sup -2} at 500 C. (Copyright copyright 2011 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim)
Authors:
Kwon, Chang-Woo; Kim, Hyun-Mi; Kim, Ki-Bum; [1]  Son, Ji-Won; Lee, Jong-Ho; Lee, Hae-Weon [2] 
  1. WCUHybrid Materials Program, Department of Materials Science and Engineering, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul, 151-742 (Korea, Republic of)
  2. High Temperature Energy Materials Center, Korea Institute of Science and Technology, 39-1, Hawolgok-dong, Seongbuk-gu, Seoul, 136-791 (Korea, Republic of)
Publication Date:
Mar 22, 2011
Product Type:
Journal Article
Resource Relation:
Journal Name: Advanced Functional Materials; Journal Volume: 21; Journal Issue: 6; Other Information: With 5 figs., NA tabs., 27 refs.
Subject:
30 DIRECT ENERGY CONVERSION; SOLID OXIDE FUEL CELLS; THIN FILMS; POROUS MATERIALS; DEPOSITION; ALUMINIUM OXIDES; POWER DENSITY; TRANSMISSION ELECTRON MICROSCOPY
OSTI ID:
21422945
Country of Origin:
Germany
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 1616-301X; TRN: DE11G4226
Availability:
Available from: http://dx.doi.org/10.1002/adfm.201002137
Submitting Site:
DE
Size:
page(s) 1154-1159
Announcement Date:
May 02, 2011

Citation Formats

Kwon, Chang-Woo, Kim, Hyun-Mi, Kim, Ki-Bum, Son, Ji-Won, Lee, Jong-Ho, and Lee, Hae-Weon. High-performance micro-solid oxide fuel cells fabricated on nanoporous anodic aluminum oxide templates. Germany: N. p., 2011. Web. doi:10.1002/ADFM.201002137.
Kwon, Chang-Woo, Kim, Hyun-Mi, Kim, Ki-Bum, Son, Ji-Won, Lee, Jong-Ho, & Lee, Hae-Weon. High-performance micro-solid oxide fuel cells fabricated on nanoporous anodic aluminum oxide templates. Germany. https://doi.org/10.1002/ADFM.201002137
Kwon, Chang-Woo, Kim, Hyun-Mi, Kim, Ki-Bum, Son, Ji-Won, Lee, Jong-Ho, and Lee, Hae-Weon. 2011. "High-performance micro-solid oxide fuel cells fabricated on nanoporous anodic aluminum oxide templates." Germany. https://doi.org/10.1002/ADFM.201002137.
@misc{etde_21422945,
title = {High-performance micro-solid oxide fuel cells fabricated on nanoporous anodic aluminum oxide templates}
author = {Kwon, Chang-Woo, Kim, Hyun-Mi, Kim, Ki-Bum, Son, Ji-Won, Lee, Jong-Ho, and Lee, Hae-Weon}
abstractNote = {Micro-solid oxide fuel cells ({mu}-SOFCs) are fabricated on nanoporous anodic aluminum oxide (AAO) templates with a cell structure composed of a 600-nm-thick AAO free-standing membrane embedded on a Si substrate, sputter-deposited Pt electrodes (cathode and anode) and an yttria-stabilized zirconia (YSZ) electrolyte deposited by pulsed laser deposition (PLD). Initially, the open circuit voltages (OCVs) of the AAO-supported {mu}-SOFCs are in the range of 0.05 V to 0.78 V, which is much lower than the ideal value, depending on the average pore size of the AAO template and the thickness of the YSZ electrolyte. Transmission electron microscopy (TEM) analysis reveals the formation of pinholes in the electrolyte layer that originate from the porous nature of the underlying AAO membrane. In order to clog these pinholes, a 20-nm thick Al{sub 2}O{sub 3} layer is deposited by atomic layer deposition (ALD) on top of the 300-nm thick YSZ layer and another 600-nm thick YSZ layer is deposited after removing the top intermittent Al{sub 2}O{sub 3} layer. Fuel cell devices fabricated in this way manifest OCVs of 1.02 V, and a maximum power density of 350 mW cm{sup -2} at 500 C. (Copyright copyright 2011 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim)}
doi = {10.1002/ADFM.201002137}
journal = []
issue = {6}
volume = {21}
place = {Germany}
year = {2011}
month = {Mar}
}