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Colloidal Shaping of 8 mol% Y ttria‐Stabilized Zirconia Electrolyte Honeycomb Structures by Microwave‐Assisted Thermal Gelation of Methyl Cellulose

Eight mol% ttria‐stabilized zirconia, the most commonly employed electrolyte material for solid oxide fuel cells (), was shaped into honeycomb structures by thermally induced gelation of aqueous zirconia slurry containing methyl cellulose using microwave irradiation. The green honeycomb samples were... Full description

Journal Title: International Journal of Applied Ceramic Technology January 2014, Vol.11(1), pp.154-163
Main Author: Rajeswari, Kotikalapudi
Other Authors: Biswas, Papiya , Suresh, Madireddy Buchi , Hareesh, Unnikrishnan Saraswathy , Johnson, Roy , Das, Dibakar
Format: Electronic Article Electronic Article
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ID: ISSN: 1546-542X ; E-ISSN: 1744-7402 ; DOI: 10.1111/j.1744-7402.2012.02852.x
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recordid: wj10.1111/j.1744-7402.2012.02852.x
title: Colloidal Shaping of 8 mol% Y ttria‐Stabilized Zirconia Electrolyte Honeycomb Structures by Microwave‐Assisted Thermal Gelation of Methyl Cellulose
format: Article
creator:
  • Rajeswari, Kotikalapudi
  • Biswas, Papiya
  • Suresh, Madireddy Buchi
  • Hareesh, Unnikrishnan Saraswathy
  • Johnson, Roy
  • Das, Dibakar
subjects:
  • Engineering
ispartof: International Journal of Applied Ceramic Technology, January 2014, Vol.11(1), pp.154-163
description: Eight mol% ttria‐stabilized zirconia, the most commonly employed electrolyte material for solid oxide fuel cells (), was shaped into honeycomb structures by thermally induced gelation of aqueous zirconia slurry containing methyl cellulose using microwave irradiation. The green honeycomb samples were subjected to green density and green compressive strength measurements revealing a uniform gelation and hence a relatively higher strength for microwave irradiated samples. The green honeycomb samples were further sintered to crack‐free dense honeycombs (>99% ) at 1525°C for 1 h. Honeycomb samples were characterized for their physical, cellular, and electrical properties. A relatively high ionic conductivity value of 0.07 S/cm at 800°C and corresponding low activation energy of 0.61 eV in the temperature range 700–800°C provide opportunities to explore the development of novel designs for application.
language:
source:
identifier: ISSN: 1546-542X ; E-ISSN: 1744-7402 ; DOI: 10.1111/j.1744-7402.2012.02852.x
fulltext: fulltext
issn:
  • 1546-542X
  • 1546542X
  • 1744-7402
  • 17447402
url: Link


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titleColloidal Shaping of 8 mol% Y ttria‐Stabilized Zirconia Electrolyte Honeycomb Structures by Microwave‐Assisted Thermal Gelation of Methyl Cellulose
creatorRajeswari, Kotikalapudi ; Biswas, Papiya ; Suresh, Madireddy Buchi ; Hareesh, Unnikrishnan Saraswathy ; Johnson, Roy ; Das, Dibakar
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descriptionEight mol% ttria‐stabilized zirconia, the most commonly employed electrolyte material for solid oxide fuel cells (), was shaped into honeycomb structures by thermally induced gelation of aqueous zirconia slurry containing methyl cellulose using microwave irradiation. The green honeycomb samples were subjected to green density and green compressive strength measurements revealing a uniform gelation and hence a relatively higher strength for microwave irradiated samples. The green honeycomb samples were further sintered to crack‐free dense honeycombs (>99% ) at 1525°C for 1 h. Honeycomb samples were characterized for their physical, cellular, and electrical properties. A relatively high ionic conductivity value of 0.07 S/cm at 800°C and corresponding low activation energy of 0.61 eV in the temperature range 700–800°C provide opportunities to explore the development of novel designs for application.
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titleColloidal Shaping of 8 mol% Y ttria‐Stabilized Zirconia Electrolyte Honeycomb Structures by Microwave‐Assisted Thermal Gelation of Methyl Cellulose
descriptionEight mol% ttria‐stabilized zirconia, the most commonly employed electrolyte material for solid oxide fuel cells (), was shaped into honeycomb structures by thermally induced gelation of aqueous zirconia slurry containing methyl cellulose using microwave irradiation. The green honeycomb samples were subjected to green density and green compressive strength measurements revealing a uniform gelation and hence a relatively higher strength for microwave irradiated samples. The green honeycomb samples were further sintered to crack‐free dense honeycombs (>99% ) at 1525°C for 1 h. Honeycomb samples were characterized for their physical, cellular, and electrical properties. A relatively high ionic conductivity value of 0.07 S/cm at 800°C and corresponding low activation energy of 0.61 eV in the temperature range 700–800°C provide opportunities to explore the development of novel designs for application.
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titleColloidal Shaping of 8 mol% Y ttria‐Stabilized Zirconia Electrolyte Honeycomb Structures by Microwave‐Assisted Thermal Gelation of Methyl Cellulose
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abstractEight mol% ttria‐stabilized zirconia, the most commonly employed electrolyte material for solid oxide fuel cells (), was shaped into honeycomb structures by thermally induced gelation of aqueous zirconia slurry containing methyl cellulose using microwave irradiation. The green honeycomb samples were subjected to green density and green compressive strength measurements revealing a uniform gelation and hence a relatively higher strength for microwave irradiated samples. The green honeycomb samples were further sintered to crack‐free dense honeycombs (>99% ) at 1525°C for 1 h. Honeycomb samples were characterized for their physical, cellular, and electrical properties. A relatively high ionic conductivity value of 0.07 S/cm at 800°C and corresponding low activation energy of 0.61 eV in the temperature range 700–800°C provide opportunities to explore the development of novel designs for application.
doi10.1111/j.1744-7402.2012.02852.x
pages154-163
date2014-01