An In Situ Formed, Dual-Phase Cathode with a Highly Active Catalyst Coating for Protonic Ceramic Fuel Cells
Abstract
Abstract Composite cathodes of solid oxide fuel cells (SOFCs) are normally fabricated by mechanical mixing of electronic‐ and ionic‐conducting phases. Here, a dual‐phase SOFC cathode, composed of perovskite PrNi 0.5 Mn 0.5 O 3 (PNM) and exsoluted fluorite PrO x particles, produced in situ through a glycine–nitrate solution combustion process, is reported. When applied as the cathode for a BaZr 0.1 Ce 0.7 Y 0.1 Yb 0.1 O 3 ‐based protonic ceramic fuel cell, the hybrid cathode displays excellent electrocatalytic activity (area‐specific resistance of 0.052 Ω cm 2 at 700 °C) and remarkable long‐term stability when operated at a cell voltage of 0.7 V for ≈500 h using H 2 as fuel and ambient air as oxidant. The excellent performance is attributed to the proton‐conducting BaPrO 3 ‐based coating and high‐concentration oxygen vacancies of a Ba‐doped PNM surface coating, produced by the reaction between the cathode and Ba from the electrolyte (via evaporation or diffusion), as confirmed by detailed X‐ray photoelectron spectroscopy, Raman spectroscopy, and density functional theory‐based calculations.
- Authors:
-
- Georgia Institute of Technology, Atlanta, GA (United States)
- Harbin Institute of Technology (China)
- South China University of Technology (SCUT), Guangzhou (China)
- Publication Date:
- Research Org.:
- Georgia Institute of Technology, Atlanta, GA (United States)
- Sponsoring Org.:
- USDOE Office of Fossil Energy (FE)
- OSTI Identifier:
- 1537346
- Alternate Identifier(s):
- OSTI ID: 1411264
- Grant/Contract Number:
- FE0009652; FE0026106; AC02-05CH11231; FC FE0026106; FC‐FE0009652; DE‐AC02‐05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Advanced Functional Materials
- Additional Journal Information:
- Journal Volume: 28; Journal Issue: 5; Journal ID: ISSN 1616-301X
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; fuel cells; SOFC; electrode; cathode; protonic ceramics
Citation Formats
Chen, Yu, Yoo, Seonyoung, Pei, Kai, Chen, Dongchang, Zhang, Lei, deGlee, Ben, Murphy, Ryan, Zhao, Bote, Zhang, Yanxiang, Chen, Yan, and Liu, Meilin. An In Situ Formed, Dual-Phase Cathode with a Highly Active Catalyst Coating for Protonic Ceramic Fuel Cells. United States: N. p., 2017.
Web. doi:10.1002/adfm.201704907.
Chen, Yu, Yoo, Seonyoung, Pei, Kai, Chen, Dongchang, Zhang, Lei, deGlee, Ben, Murphy, Ryan, Zhao, Bote, Zhang, Yanxiang, Chen, Yan, & Liu, Meilin. An In Situ Formed, Dual-Phase Cathode with a Highly Active Catalyst Coating for Protonic Ceramic Fuel Cells. United States. https://doi.org/10.1002/adfm.201704907
Chen, Yu, Yoo, Seonyoung, Pei, Kai, Chen, Dongchang, Zhang, Lei, deGlee, Ben, Murphy, Ryan, Zhao, Bote, Zhang, Yanxiang, Chen, Yan, and Liu, Meilin. Mon .
"An In Situ Formed, Dual-Phase Cathode with a Highly Active Catalyst Coating for Protonic Ceramic Fuel Cells". United States. https://doi.org/10.1002/adfm.201704907. https://www.osti.gov/servlets/purl/1537346.
@article{osti_1537346,
title = {An In Situ Formed, Dual-Phase Cathode with a Highly Active Catalyst Coating for Protonic Ceramic Fuel Cells},
author = {Chen, Yu and Yoo, Seonyoung and Pei, Kai and Chen, Dongchang and Zhang, Lei and deGlee, Ben and Murphy, Ryan and Zhao, Bote and Zhang, Yanxiang and Chen, Yan and Liu, Meilin},
abstractNote = {Abstract Composite cathodes of solid oxide fuel cells (SOFCs) are normally fabricated by mechanical mixing of electronic‐ and ionic‐conducting phases. Here, a dual‐phase SOFC cathode, composed of perovskite PrNi 0.5 Mn 0.5 O 3 (PNM) and exsoluted fluorite PrO x particles, produced in situ through a glycine–nitrate solution combustion process, is reported. When applied as the cathode for a BaZr 0.1 Ce 0.7 Y 0.1 Yb 0.1 O 3 ‐based protonic ceramic fuel cell, the hybrid cathode displays excellent electrocatalytic activity (area‐specific resistance of 0.052 Ω cm 2 at 700 °C) and remarkable long‐term stability when operated at a cell voltage of 0.7 V for ≈500 h using H 2 as fuel and ambient air as oxidant. The excellent performance is attributed to the proton‐conducting BaPrO 3 ‐based coating and high‐concentration oxygen vacancies of a Ba‐doped PNM surface coating, produced by the reaction between the cathode and Ba from the electrolyte (via evaporation or diffusion), as confirmed by detailed X‐ray photoelectron spectroscopy, Raman spectroscopy, and density functional theory‐based calculations.},
doi = {10.1002/adfm.201704907},
journal = {Advanced Functional Materials},
number = 5,
volume = 28,
place = {United States},
year = {Mon Dec 04 00:00:00 EST 2017},
month = {Mon Dec 04 00:00:00 EST 2017}
}
Web of Science
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