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Title: A robust and active hybrid catalyst for facile oxygen reduction in solid oxide fuel cells

Abstract

The sluggish oxygen reduction reaction (ORR) greatly reduces the energy efficiency of solid oxide fuel cells (SOFCs). In this work, we present our results in dramatically enhancing the ORR kinetics and durability of the state-of-the-art La 0.6Sr 0.4Co 0.2Fe 0.8O 3 (LSCF) cathode using a hybrid catalyst coating composed of a conformal PrNi 0.5Mn 0.5O 3 (PNM) thin film with exsoluted PrOx nanoparticles. At 750 °C, the hybrid catalyst-coated LSCF cathode shows a polarization resistance of ~0.022 Ω cm 2, about 1/6 of that for a bare LSCF cathode (~0.134 Ω cm 2). Further, anode-supported cells with the hybrid catalyst-coated LSCF cathode demonstrate remarkable peak power densities (~1.21 W cm –2) while maintaining excellent durability (0.7 V for ~500 h). Near Ambient X-ray Photoelectron Spectroscopy (XPS) and Near Edge X-Ray Absorption Fine Structure (NEXAFS) analyses, together with density functional theory (DFT) calculations, imply that the oxygen-vacancy-rich surfaces of the PrOx nanoparticles greatly accelerate the rate of electron transfer in the ORR whereas the thin PNM film facilitates rapid oxide-ion transport while drastically enhancing the surface stability of the LSCF electrode.

Authors:
ORCiD logo [1]; ORCiD logo [2];  [1];  [1];  [3];  [1]; ORCiD logo [1];  [1];  [1]; ORCiD logo [1];  [4]; ORCiD logo [5];  [4];  [4];  [6]; ORCiD logo [6];  [7];  [7];  [4]; ORCiD logo [1]
  1. Georgia Inst. of Technology, Atlanta, GA (United States)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); South China Univ. of Technology (SCUT), Guangzhou (China)
  3. SABIC Technology Center (Saudi Arabia)
  4. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  5. Materials Science and Engineering; Georgia Institute of Technology; Atlanta; USA
  6. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  7. South China Univ. of Technology (SCUT), Guangzhou (China)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Org.:
USDOE Advanced Research Projects Agency - Energy (ARPA-E); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1491027
DOE Contract Number:  
AC02-05CH11231; NT0006557; AR0000502; SC0002633
Resource Type:
Journal Article
Journal Name:
Energy & Environmental Science
Additional Journal Information:
Journal Volume: 10; Journal Issue: 4; Journal ID: ISSN 1754-5692
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English

Citation Formats

Chen, Yu, Chen, Yan, Ding, Dong, Ding, Yong, Choi, YongMan, Zhang, Lei, Yoo, Seonyoung, Chen, Dongchang, deGlee, Ben, Xu, Han, Lu, Qiyang, Zhao, Bote, Vardar, Gulin, Wang, Jiayue, Bluhm, Hendrik, Crumlin, Ethan J., Yang, Chenghao, Liu, Jiang, Yildiz, Bilge, and Liu, Meilin. A robust and active hybrid catalyst for facile oxygen reduction in solid oxide fuel cells. United States: N. p., 2017. Web. doi:10.1039/c6ee03656b.
Chen, Yu, Chen, Yan, Ding, Dong, Ding, Yong, Choi, YongMan, Zhang, Lei, Yoo, Seonyoung, Chen, Dongchang, deGlee, Ben, Xu, Han, Lu, Qiyang, Zhao, Bote, Vardar, Gulin, Wang, Jiayue, Bluhm, Hendrik, Crumlin, Ethan J., Yang, Chenghao, Liu, Jiang, Yildiz, Bilge, & Liu, Meilin. A robust and active hybrid catalyst for facile oxygen reduction in solid oxide fuel cells. United States. https://doi.org/10.1039/c6ee03656b
Chen, Yu, Chen, Yan, Ding, Dong, Ding, Yong, Choi, YongMan, Zhang, Lei, Yoo, Seonyoung, Chen, Dongchang, deGlee, Ben, Xu, Han, Lu, Qiyang, Zhao, Bote, Vardar, Gulin, Wang, Jiayue, Bluhm, Hendrik, Crumlin, Ethan J., Yang, Chenghao, Liu, Jiang, Yildiz, Bilge, and Liu, Meilin. Tue . "A robust and active hybrid catalyst for facile oxygen reduction in solid oxide fuel cells". United States. https://doi.org/10.1039/c6ee03656b.
@article{osti_1491027,
title = {A robust and active hybrid catalyst for facile oxygen reduction in solid oxide fuel cells},
author = {Chen, Yu and Chen, Yan and Ding, Dong and Ding, Yong and Choi, YongMan and Zhang, Lei and Yoo, Seonyoung and Chen, Dongchang and deGlee, Ben and Xu, Han and Lu, Qiyang and Zhao, Bote and Vardar, Gulin and Wang, Jiayue and Bluhm, Hendrik and Crumlin, Ethan J. and Yang, Chenghao and Liu, Jiang and Yildiz, Bilge and Liu, Meilin},
abstractNote = {The sluggish oxygen reduction reaction (ORR) greatly reduces the energy efficiency of solid oxide fuel cells (SOFCs). In this work, we present our results in dramatically enhancing the ORR kinetics and durability of the state-of-the-art La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) cathode using a hybrid catalyst coating composed of a conformal PrNi0.5Mn0.5O3 (PNM) thin film with exsoluted PrOx nanoparticles. At 750 °C, the hybrid catalyst-coated LSCF cathode shows a polarization resistance of ~0.022 Ω cm2, about 1/6 of that for a bare LSCF cathode (~0.134 Ω cm2). Further, anode-supported cells with the hybrid catalyst-coated LSCF cathode demonstrate remarkable peak power densities (~1.21 W cm–2) while maintaining excellent durability (0.7 V for ~500 h). Near Ambient X-ray Photoelectron Spectroscopy (XPS) and Near Edge X-Ray Absorption Fine Structure (NEXAFS) analyses, together with density functional theory (DFT) calculations, imply that the oxygen-vacancy-rich surfaces of the PrOx nanoparticles greatly accelerate the rate of electron transfer in the ORR whereas the thin PNM film facilitates rapid oxide-ion transport while drastically enhancing the surface stability of the LSCF electrode.},
doi = {10.1039/c6ee03656b},
url = {https://www.osti.gov/biblio/1491027}, journal = {Energy & Environmental Science},
issn = {1754-5692},
number = 4,
volume = 10,
place = {United States},
year = {2017},
month = {3}
}

Works referenced in this record:

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Rational design of novel cathode materials in solid oxide fuel cells using first-principles simulations
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A Highly Efficient and Robust Nanofiber Cathode for Solid Oxide Fuel Cells
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Efficient Electro-Catalysts for Enhancing Surface Activity and Stability of SOFC Cathodes
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Kinetics of Oxygen Surface Exchange on Epitaxial Ruddlesden–Popper Phases and Correlations to First-Principles Descriptors
journal, January 2016


On the band gaps and electronic structure of thin single crystalline praseodymium oxide layers on Si(111)
journal, January 2009

  • Seifarth, O.; Dabrowski, J.; Zaumseil, P.
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  • https://doi.org/10.1116/1.3021047

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Cr Poisoning Suppression in Solid Oxide Fuel Cells Using LaNi(Fe)O[sub 3] Electrodes
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Quantum-mechanics-based design principles for solid oxide fuel cell cathode materials
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A high-performance cathode for the next generation of solid-oxide fuel cells
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Surface Electronic Structure Transitions at High Temperature on Perovskite Oxides: The Case of Strained La 0.8 Sr 0.2 CoO 3 Thin Films
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Cation Size Mismatch and Charge Interactions Drive Dopant Segregation at the Surfaces of Manganite Perovskites
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Prediction of solid oxide fuel cell cathode activity with first-principles descriptors
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Effect of Boron Deposition and Poisoning on the Surface Exchange Properties of LSCF Electrode Materials of Solid Oxide Fuel Cells
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Deposition of Cr Species at (La,Sr)(Co,Fe)O[sub 3] Cathodes of Solid Oxide Fuel Cells
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Enhanced Sulfur and Coking Tolerance of a Mixed Ion Conductor for SOFCs: BaZr0.1Ce0.7Y0.2–xYbxO3–δ
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Self-regeneration of a Pd-perovskite catalyst for automotive emissions control
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    Works referencing / citing this record:

    High Performance LSC Infiltrated LSCF Oxygen Electrode for High Temperature Steam Electrolysis Application
    journal, January 2019