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

Yu Chen; Yan Chen; Dong Ding; Yong Ding; YongMan Choi; Lei Zhang; Seonyoung Yoo; Dongchang Chen; Ben Deglee; Han Xu; Qiyang Lu; Bote Zhao; Gulin Vardar; Jiayue Wang; Hendrik Bluhm; Ethan J. Crumlin; Chenghao Yang; Jiang Liu; Bilge Yildiz; Meilin Liu

doi:10.1039/c6ee03656b

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

Yu Chen, Yan Chen, Dong Ding, Yong Ding, YongMan Choi, Lei Zhang, Seonyoung Yoo, Dongchang Chen, Ben Deglee, Han Xu, Qiyang Lu, Bote Zhao, Gulin Vardar, Jiayue Wang, Hendrik Bluhm, Ethan J. Crumlin, Chenghao Yang, Jiang Liu, Bilge Yildiz, Meilin Liu

光電系統研究所

研究成果: Article › 同行評審

233 引文斯高帕斯（Scopus）

摘要

The sluggish oxygen reduction reaction (ORR) greatly reduces the energy efficiency of solid oxide fuel cells (SOFCs). Here we report our findings 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 degrees C, the hybrid catalyst-coated LSCF cathode shows a polarization resistance of B-0.022 Omega cm(2), about 1/6 of that for a bare LSCF cathode (B-0.134 Omega cm(2)). Further, anode-supported cells with the hybrid catalyst-coated LSCF cathode demonstrate remarkable peak power densities (B1.21 W cm(-2)) while maintaining excellent durability (0.7 V for B500 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, indicate 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.

原文	English
頁（從 - 到）	964-971
頁數	8
期刊	Energy and Environmental Science
卷	10
發行號	4
DOIs	https://doi.org/10.1039/c6ee03656b
出版狀態	Published - 4月 2017

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10.1039/c6ee03656b

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Chen, Y., Chen, Y., Ding, D., Ding, Y., Choi, Y., Zhang, L., Yoo, S., Chen, D., Deglee, B., Xu, H., Lu, Q., Zhao, B., Vardar, G., Wang, J., Bluhm, H., Crumlin, E. J., Yang, C., Liu, J., Yildiz, B., & Liu, M. (2017). A robust and active hybrid catalyst for facile oxygen reduction in solid oxide fuel cells. Energy and Environmental Science, 10(4), 964-971. https://doi.org/10.1039/c6ee03656b

@article{4cb97a27871048d5a53710a4aeb8482c,

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). Here we report our findings 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 degrees C, the hybrid catalyst-coated LSCF cathode shows a polarization resistance of B-0.022 Omega cm(2), about 1/6 of that for a bare LSCF cathode (B-0.134 Omega cm(2)). Further, anode-supported cells with the hybrid catalyst-coated LSCF cathode demonstrate remarkable peak power densities (B1.21 W cm(-2)) while maintaining excellent durability (0.7 V for B500 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, indicate 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.",

author = "Yu Chen and Yan Chen and Dong Ding and Yong Ding and YongMan Choi and Lei Zhang and Seonyoung Yoo and Dongchang Chen and Ben Deglee and Han Xu and Qiyang Lu and Bote Zhao and Gulin Vardar and Jiayue Wang and Hendrik Bluhm and Crumlin, {Ethan J.} and Chenghao Yang and Jiang Liu and Bilge Yildiz and Meilin Liu",

year = "2017",

month = apr,

doi = "10.1039/c6ee03656b",

language = "English",

volume = "10",

pages = "964--971",

journal = "Energy and Environmental Science",

issn = "1754-5692",

publisher = "Royal Society of Chemistry",

number = "4",

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Chen, Y, Chen, Y, Ding, D, Ding, Y, Choi, Y, Zhang, L, Yoo, S, Chen, D, Deglee, B, Xu, H, Lu, Q, Zhao, B, Vardar, G, Wang, J, Bluhm, H, Crumlin, EJ, Yang, C, Liu, J, Yildiz, B & Liu, M 2017, 'A robust and active hybrid catalyst for facile oxygen reduction in solid oxide fuel cells', Energy and Environmental Science, 卷 10, 編號 4, 頁 964-971. https://doi.org/10.1039/c6ee03656b

TY - JOUR

T1 - A robust and active hybrid catalyst for facile oxygen reduction in solid oxide fuel cells

AU - Chen, Yu

AU - Chen, Yan

AU - Ding, Dong

AU - Ding, Yong

AU - Choi, YongMan

AU - Zhang, Lei

AU - Yoo, Seonyoung

AU - Chen, Dongchang

AU - Deglee, Ben

AU - Xu, Han

AU - Lu, Qiyang

AU - Zhao, Bote

AU - Vardar, Gulin

AU - Wang, Jiayue

AU - Bluhm, Hendrik

AU - Crumlin, Ethan J.

AU - Yang, Chenghao

AU - Liu, Jiang

AU - Yildiz, Bilge

AU - Liu, Meilin

PY - 2017/4

Y1 - 2017/4

N2 - The sluggish oxygen reduction reaction (ORR) greatly reduces the energy efficiency of solid oxide fuel cells (SOFCs). Here we report our findings 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 degrees C, the hybrid catalyst-coated LSCF cathode shows a polarization resistance of B-0.022 Omega cm(2), about 1/6 of that for a bare LSCF cathode (B-0.134 Omega cm(2)). Further, anode-supported cells with the hybrid catalyst-coated LSCF cathode demonstrate remarkable peak power densities (B1.21 W cm(-2)) while maintaining excellent durability (0.7 V for B500 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, indicate 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.

AB - The sluggish oxygen reduction reaction (ORR) greatly reduces the energy efficiency of solid oxide fuel cells (SOFCs). Here we report our findings 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 degrees C, the hybrid catalyst-coated LSCF cathode shows a polarization resistance of B-0.022 Omega cm(2), about 1/6 of that for a bare LSCF cathode (B-0.134 Omega cm(2)). Further, anode-supported cells with the hybrid catalyst-coated LSCF cathode demonstrate remarkable peak power densities (B1.21 W cm(-2)) while maintaining excellent durability (0.7 V for B500 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, indicate 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.

U2 - 10.1039/c6ee03656b

DO - 10.1039/c6ee03656b

M3 - Article

SN - 1754-5692

VL - 10

SP - 964

EP - 971

JO - Energy and Environmental Science

JF - Energy and Environmental Science

IS - 4

ER -

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

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