Multicomponent proton conducting ceramics of SiO2 - TiO 2 - ZrO2 - P2O5 - Bi 2O3 for an intermediate temperature fuel cell

Dongho Seo, Sangsun Park, Byeong Mu Lim, Yong Soo Cho, Yong-Gun Shul

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The multicomponent proton conducting ceramics SiO2-TiO 2- ZrO2-P2 O5 (STZP) and SiO 2-TiO2- ZrO2-P2 O 5-Bi2 O3 with three different compositions (STZPBi3, STZPBi10, and STZPBi15) were synthesized via a wet chemical route. These prepared materials showed good thermal stability up to around 900°C by TG/DTA analyses. Introduction of optimum quantity of bismuth as a sintering aid into the samples contributed to enhance the densification of microstructure, which is essential for the utilization of proton conducting ceramics in fuel cells operated at elevated temperature. The proton conductivity of STZP was 3.6 × 10-5 S/cm at 80°C and that of STZPBi10 was 4.6 × 10-3 S/cm at 180°C. The fuel cell performances using STZP and STZPBi10 were implemented at 80°C and up to 230°C, respectively. The maximum power density was 0.03 mW/ cm2 at 80°C for the STZP sample and 2.5 mW/ cm2 at 150°C for the STZPBi10 sample under wet hydrogen and dry oxygen. The reduction of CO poisoning on platinum catalyst was demonstrated in fuel cell operating at temperatures of 180°C, 200°C, and 230°C.

Original languageEnglish
Article number011012
JournalJournal of Fuel Cell Science and Technology
Volume8
Issue number1
DOIs
Publication statusPublished - 2011 Feb 15

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phosphorus pentoxide
Protons
Fuel cells
Catalyst poisoning
Bismuth
Proton conductivity
Carbon Monoxide
Platinum
Densification
Temperature
Differential thermal analysis
Hydrogen
Thermodynamic stability
Sintering
Oxygen
Microstructure
Catalysts
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Mechanics of Materials
  • Renewable Energy, Sustainability and the Environment
  • Electronic, Optical and Magnetic Materials
  • Energy Engineering and Power Technology

Cite this

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title = "Multicomponent proton conducting ceramics of SiO2 - TiO 2 - ZrO2 - P2O5 - Bi 2O3 for an intermediate temperature fuel cell",
abstract = "The multicomponent proton conducting ceramics SiO2-TiO 2- ZrO2-P2 O5 (STZP) and SiO 2-TiO2- ZrO2-P2 O 5-Bi2 O3 with three different compositions (STZPBi3, STZPBi10, and STZPBi15) were synthesized via a wet chemical route. These prepared materials showed good thermal stability up to around 900°C by TG/DTA analyses. Introduction of optimum quantity of bismuth as a sintering aid into the samples contributed to enhance the densification of microstructure, which is essential for the utilization of proton conducting ceramics in fuel cells operated at elevated temperature. The proton conductivity of STZP was 3.6 × 10-5 S/cm at 80°C and that of STZPBi10 was 4.6 × 10-3 S/cm at 180°C. The fuel cell performances using STZP and STZPBi10 were implemented at 80°C and up to 230°C, respectively. The maximum power density was 0.03 mW/ cm2 at 80°C for the STZP sample and 2.5 mW/ cm2 at 150°C for the STZPBi10 sample under wet hydrogen and dry oxygen. The reduction of CO poisoning on platinum catalyst was demonstrated in fuel cell operating at temperatures of 180°C, 200°C, and 230°C.",
author = "Dongho Seo and Sangsun Park and Lim, {Byeong Mu} and Cho, {Yong Soo} and Yong-Gun Shul",
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Multicomponent proton conducting ceramics of SiO2 - TiO 2 - ZrO2 - P2O5 - Bi 2O3 for an intermediate temperature fuel cell. / Seo, Dongho; Park, Sangsun; Lim, Byeong Mu; Cho, Yong Soo; Shul, Yong-Gun.

In: Journal of Fuel Cell Science and Technology, Vol. 8, No. 1, 011012, 15.02.2011.

Research output: Contribution to journalArticle

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AU - Seo, Dongho

AU - Park, Sangsun

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AU - Cho, Yong Soo

AU - Shul, Yong-Gun

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