A Highly Efficient Multi-phase Catalyst Dramatically Enhances the Rate of Oxygen Reduction

Chen, Yu; Choi, YongMan; Yoo, Seonyoung; Ding, Yong; Yan, Ruiqiang; Pei, Kai; Qu, Chong; Zhang, Lei; Chang, Ikwhang; Zhao, Bote; Zhang, Yanxiang; Chen, Huijun; Chen, Yan; Yang, Chenghao; deGlee, Ben; Murphy, Ryan; Liu, Jiang; Liu, Meilin

doi:10.1016/j.joule.2018.02.008

Title: A Highly Efficient Multi-phase Catalyst Dramatically Enhances the Rate of Oxygen Reduction

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Abstract

This work demonstrates that a multi-phase catalyst coating (~30 nm thick), composed of BaCoO_3–x (BCO) and PrCoO_3–x (PCO) nanoparticles (NPs) and a conformal PrBa_0.8Ca_0.2Co₂O_5+δ (PBCC) thin film, has dramatically enhanced the rate of oxygen reduction reaction (ORR). When applied to a state-of-the-art La_0.6Sr_0.4Co_0.2Fe_0.8O₃ (LSCF) cathode in a solid oxide fuel cell (SOFC), the catalyst coating reduced the cathodic polarization resistance from 2.57 to 0.312 Ω cm² at 600°C. Oxygen molecules adsorb and dissociate rapidly on the NPs due to enriched surface oxygen vacancies and then quickly transport through the PBCC film, as confirmed by density functional theory-based computations. Here, the synergistic combination of the distinctive properties of the two separate phases dramatically enhances the ORR kinetics, which is attractive not only for intermediate-temperature SOFCs but also for other types of energy conversion and storage systems, including electrolysis cells and membrane reactors for synthesis of clean fuels.

Authors:: Chen, Yu; Choi, YongMan; Yoo, Seonyoung; Ding, Yong; Yan, Ruiqiang; Pei, Kai; Qu, Chong; Zhang, Lei; Chang, Ikwhang; Zhao, Bote; Zhang, Yanxiang; Chen, Huijun; Chen, Yan; Yang, Chenghao; deGlee, Ben; Murphy, Ryan; Liu, Jiang; Liu, Meilin

Publication Date:: Tue May 01 00:00:00 EDT 2018

Research Org.:: Georgia Institute of Technology, Atlanta, GA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division

OSTI Identifier:: 1580451

Alternate Identifier(s):: OSTI ID: 1877391

Grant/Contract Number:: FC FE0026106; FE0031201; AC02-05CH11231

Resource Type:: Published Article

Journal Name:: Joule

Additional Journal Information:: Journal Name: Joule Journal Volume: 2 Journal Issue: 5; Journal ID: ISSN 2542-4351

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 25 ENERGY STORAGE; oxygen reduction; ORR; surface coating; solid oxide fuel cell; cathode

Citation Formats


                    Chen, Yu, Choi, YongMan, Yoo, Seonyoung, Ding, Yong, Yan, Ruiqiang, Pei, Kai, Qu, Chong, Zhang, Lei, Chang, Ikwhang, Zhao, Bote, Zhang, Yanxiang, Chen, Huijun, Chen, Yan, Yang, Chenghao, deGlee, Ben, Murphy, Ryan, Liu, Jiang, and Liu, Meilin. A Highly Efficient Multi-phase Catalyst Dramatically Enhances the Rate of Oxygen Reduction.  United States: N. p., 2018. 
Web.  doi:10.1016/j.joule.2018.02.008.

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                    Chen, Yu, Choi, YongMan, Yoo, Seonyoung, Ding, Yong, Yan, Ruiqiang, Pei, Kai, Qu, Chong, Zhang, Lei, Chang, Ikwhang, Zhao, Bote, Zhang, Yanxiang, Chen, Huijun, Chen, Yan, Yang, Chenghao, deGlee, Ben, Murphy, Ryan, Liu, Jiang, & Liu, Meilin. A Highly Efficient Multi-phase Catalyst Dramatically Enhances the Rate of Oxygen Reduction.  United States.  https://doi.org/10.1016/j.joule.2018.02.008

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                    Chen, Yu, Choi, YongMan, Yoo, Seonyoung, Ding, Yong, Yan, Ruiqiang, Pei, Kai, Qu, Chong, Zhang, Lei, Chang, Ikwhang, Zhao, Bote, Zhang, Yanxiang, Chen, Huijun, Chen, Yan, Yang, Chenghao, deGlee, Ben, Murphy, Ryan, Liu, Jiang, and Liu, Meilin. Tue .  
"A Highly Efficient Multi-phase Catalyst Dramatically Enhances the Rate of Oxygen Reduction".  United States.  https://doi.org/10.1016/j.joule.2018.02.008.

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@article{osti_1580451,

  title        = {A Highly Efficient Multi-phase Catalyst Dramatically Enhances the Rate of Oxygen Reduction},

  author       = {Chen, Yu and Choi, YongMan and Yoo, Seonyoung and Ding, Yong and Yan, Ruiqiang and Pei, Kai and Qu, Chong and Zhang, Lei and Chang, Ikwhang and Zhao, Bote and Zhang, Yanxiang and Chen, Huijun and Chen, Yan and Yang, Chenghao and deGlee, Ben and Murphy, Ryan and Liu, Jiang and Liu, Meilin},

  abstractNote = {This work demonstrates that a multi-phase catalyst coating (~30 nm thick), composed of BaCoO3–x (BCO) and PrCoO3–x (PCO) nanoparticles (NPs) and a conformal PrBa0.8Ca0.2Co2O5+δ (PBCC) thin film, has dramatically enhanced the rate of oxygen reduction reaction (ORR). When applied to a state-of-the-art La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) cathode in a solid oxide fuel cell (SOFC), the catalyst coating reduced the cathodic polarization resistance from 2.57 to 0.312 Ω cm2 at 600°C. Oxygen molecules adsorb and dissociate rapidly on the NPs due to enriched surface oxygen vacancies and then quickly transport through the PBCC film, as confirmed by density functional theory-based computations. Here, the synergistic combination of the distinctive properties of the two separate phases dramatically enhances the ORR kinetics, which is attractive not only for intermediate-temperature SOFCs but also for other types of energy conversion and storage systems, including electrolysis cells and membrane reactors for synthesis of clean fuels.},

  doi          = {10.1016/j.joule.2018.02.008},

  journal      = {Joule},

  number       = 5,

  volume       = 2,

  place        = {United States},

  year         = {Tue May 01 00:00:00 EDT 2018},

  month        = {Tue May 01 00:00:00 EDT 2018}

}

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