Preparation of silica-based proton conductors for intermediate temperature fuel cells

Dongho Seo; Sangsun Park; Yong Gun Shul

doi:10.1007/s11814-009-0169-8

Preparation of silica-based proton conductors for intermediate temperature fuel cells

Dongho Seo, Sangsun Park, Yong Gun Shul

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

The ternary system SiO₂-P₂O₅-ZrO₂ electrolyte and phosphotungstic acid (PWA) doped SiO₂-P₂O₅-ZrO₂ electrolyte were prepared for intermediate temperature fuel cell by using sol-gel technique. These silica-based proton conductors were confirmed to be non-crystalline structure without phase separation and good thermal stability by XRD and TG/DTA analysis. The doped PWA was found to be stabilized within the silica matrix and to enhance the proton conductivity. The proton conductivities of SiO₂-P₂O₅-ZrO₂ and SiO₂-P₂O₅-ZrO₂-PWA electrolytes showed 3.3×^-5 and 1.8×10^-3 S/cm at 90 °C, respectively, and the cell performance of SiO₂-P₂O₅-ZrO₂-PWA electrolyte was obtained as 0.02-0.25 mA/cm² at 300 °C under humid condition.

Original language	English
Pages (from-to)	1016-1021
Number of pages	6
Journal	Korean Journal of Chemical Engineering
Volume	26
Issue number	4
DOIs	https://doi.org/10.1007/s11814-009-0169-8
Publication status	Published - 2009

Bibliographical note

Funding Information:
This work was supported by Brain Korea 21 project and the fostering project of the Specialized Graduate School of Hydrogen & Fuel Cell supported financially by the Ministry of Commerce, Industry and Energy (MOCIE).

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)

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@article{076347575811408895acfea2fec32e53,

title = "Preparation of silica-based proton conductors for intermediate temperature fuel cells",

abstract = "The ternary system SiO2-P2O5-ZrO2 electrolyte and phosphotungstic acid (PWA) doped SiO2-P2O5-ZrO2 electrolyte were prepared for intermediate temperature fuel cell by using sol-gel technique. These silica-based proton conductors were confirmed to be non-crystalline structure without phase separation and good thermal stability by XRD and TG/DTA analysis. The doped PWA was found to be stabilized within the silica matrix and to enhance the proton conductivity. The proton conductivities of SiO2-P2O5-ZrO2 and SiO2-P2O5-ZrO2-PWA electrolytes showed 3.3×-5 and 1.8×10-3 S/cm at 90 °C, respectively, and the cell performance of SiO2-P2O5-ZrO2-PWA electrolyte was obtained as 0.02-0.25 mA/cm2 at 300 °C under humid condition.",

author = "Dongho Seo and Sangsun Park and Shul, {Yong Gun}",

note = "Funding Information: This work was supported by Brain Korea 21 project and the fostering project of the Specialized Graduate School of Hydrogen & Fuel Cell supported financially by the Ministry of Commerce, Industry and Energy (MOCIE).",

year = "2009",

doi = "10.1007/s11814-009-0169-8",

language = "English",

volume = "26",

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journal = "Korean Journal of Chemical Engineering",

issn = "0256-1115",

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TY - JOUR

T1 - Preparation of silica-based proton conductors for intermediate temperature fuel cells

AU - Seo, Dongho

AU - Park, Sangsun

AU - Shul, Yong Gun

N1 - Funding Information: This work was supported by Brain Korea 21 project and the fostering project of the Specialized Graduate School of Hydrogen & Fuel Cell supported financially by the Ministry of Commerce, Industry and Energy (MOCIE).

PY - 2009

Y1 - 2009

N2 - The ternary system SiO2-P2O5-ZrO2 electrolyte and phosphotungstic acid (PWA) doped SiO2-P2O5-ZrO2 electrolyte were prepared for intermediate temperature fuel cell by using sol-gel technique. These silica-based proton conductors were confirmed to be non-crystalline structure without phase separation and good thermal stability by XRD and TG/DTA analysis. The doped PWA was found to be stabilized within the silica matrix and to enhance the proton conductivity. The proton conductivities of SiO2-P2O5-ZrO2 and SiO2-P2O5-ZrO2-PWA electrolytes showed 3.3×-5 and 1.8×10-3 S/cm at 90 °C, respectively, and the cell performance of SiO2-P2O5-ZrO2-PWA electrolyte was obtained as 0.02-0.25 mA/cm2 at 300 °C under humid condition.

AB - The ternary system SiO2-P2O5-ZrO2 electrolyte and phosphotungstic acid (PWA) doped SiO2-P2O5-ZrO2 electrolyte were prepared for intermediate temperature fuel cell by using sol-gel technique. These silica-based proton conductors were confirmed to be non-crystalline structure without phase separation and good thermal stability by XRD and TG/DTA analysis. The doped PWA was found to be stabilized within the silica matrix and to enhance the proton conductivity. The proton conductivities of SiO2-P2O5-ZrO2 and SiO2-P2O5-ZrO2-PWA electrolytes showed 3.3×-5 and 1.8×10-3 S/cm at 90 °C, respectively, and the cell performance of SiO2-P2O5-ZrO2-PWA electrolyte was obtained as 0.02-0.25 mA/cm2 at 300 °C under humid condition.

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U2 - 10.1007/s11814-009-0169-8

DO - 10.1007/s11814-009-0169-8

M3 - Article

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SN - 0256-1115

VL - 26

SP - 1016

EP - 1021

JO - Korean Journal of Chemical Engineering

JF - Korean Journal of Chemical Engineering

IS - 4

ER -

Preparation of silica-based proton conductors for intermediate temperature fuel cells

Abstract

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