Effect of Infiltration of Barium Carbonate Nanoparticles on the Electrochemical Performance of La0.6Sr0.4Co0.2Fe0.8O3–δ Cathodes for Protonic Ceramic Fuel Cells

Gao, Jun; Meng, Yuqing; Lee, Shiwoo; Tong, Jianhua; Brinkman, Kyle S.

doi:10.1007/s11837-018-3098-3

Title: Effect of Infiltration of Barium Carbonate Nanoparticles on the Electrochemical Performance of La_0.6Sr_0.4Co_0.2Fe_0.8O_3–δ Cathodes for Protonic Ceramic Fuel Cells

Journal Article · Tue Aug 28 00:00:00 EDT 2018 · JOM. Journal of the Minerals, Metals & Materials Society

DOI:https://doi.org/10.1007/s11837-018-3098-3· OSTI ID:1631111

Gao, Jun ^[1]; Meng, Yuqing ^[1]; Lee, Shiwoo ^[2]; Tong, Jianhua ^[1];

^[3]

Clemson Univ., SC (United States)
National Energy Technology Lab. (NETL), Morgantown, WV (United States); AECOM, Morgantown, WV (United States)
Clemson Univ., SC (United States); National Energy Technology Laboratory (NETL), Morgantown, WV (United States)

In this work BaCO₃ nanoparticles were infiltrated into a La_0.6Sr_0.4Co_0.2Fe_0.8O_3–δ (LSCF) electrode as a synergistic catalyst to enhance the performance of proton conducting solid oxide fuel cells (H-SOFCs). Electrochemical impedance analysis showed that the polarization resistance was dramatically reduced by nearly 75% from 1.123 Ω cm² to 0.293 Ω cm² at 700°C after infiltration of BaCO₃ nanoparticles. The chemical stability between the BaCO₃ and LSCF electrode was investigated by running a long-term 300-h test, during which the polarization resistance exhibited only minor degradation (2.22–2.20 Ω cm²). In addition, single cells with infiltrated LSCF electrode and BaCe_0.7Zr_0.1Y_0.1Yb_0.1O_3–δ (BCZYYb) electrolyte yielded a maximum power density of 404 mW cm^–2 at 700°C, much higher than cells with a bare LSCF electrode (268 mW cm^–2 at 700°C). BaCO₃ demonstrated promising performance enhancements of LSCF electrodes for H-SOFCs and warrants further development.

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Research Organization:: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)

Sponsoring Organization:: USDOE Office of Nuclear Energy (NE), Nuclear Energy University Program (NEUP)

OSTI ID:: 1631111

Journal Information:: JOM. Journal of the Minerals, Metals & Materials Society, Vol. 71, Issue 1; ISSN 1047-4838

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 5 works

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Title: Effect of Infiltration of Barium Carbonate Nanoparticles on the Electrochemical Performance of La0.6Sr0.4Co0.2Fe0.8O3–δ Cathodes for Protonic Ceramic Fuel Cells

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Title: Effect of Infiltration of Barium Carbonate Nanoparticles on the Electrochemical Performance of La_0.6Sr_0.4Co_0.2Fe_0.8O_3–δ Cathodes for Protonic Ceramic Fuel Cells