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 language | English |
|---|---|
| Article number | 011012 |
| Journal | Journal of Fuel Cell Science and Technology |
| Volume | 8 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2011 Feb 15 |
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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
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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 journal › Article
TY - JOUR
T1 - Multicomponent proton conducting ceramics of SiO2 - TiO 2 - ZrO2 - P2O5 - Bi 2O3 for an intermediate temperature fuel cell
AU - Seo, Dongho
AU - Park, Sangsun
AU - Lim, Byeong Mu
AU - Cho, Yong Soo
AU - Shul, Yong-Gun
PY - 2011/2/15
Y1 - 2011/2/15
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=79851473197&partnerID=8YFLogxK
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U2 - 10.1115/1.4002313
DO - 10.1115/1.4002313
M3 - Article
AN - SCOPUS:79851473197
VL - 8
JO - Journal of Fuel Cell Science and Technology
JF - Journal of Fuel Cell Science and Technology
SN - 1550-624X
IS - 1
M1 - 011012
ER -