A high-performance reversible protonic ceramic electrochemical cell based on a novel Sm-doped BaCe0.7Zr0.1Y0.2O3-δ electrolyte

Meng, Yuqing; Gao, Jun; Huang, Hua; Zou, Minda; Duffy, Jack; Tong, Jianhua; Brinkman, Kyle S.

doi:10.1016/j.jpowsour.2019.227093

Title: A high-performance reversible protonic ceramic electrochemical cell based on a novel Sm-doped BaCe_0.7Zr_0.1Y_0.2O_3-δ electrolyte

Journal Article · Fri Nov 01 00:00:00 EDT 2019 · Journal of Power Sources

DOI:https://doi.org/10.1016/j.jpowsour.2019.227093· OSTI ID:1574666

Meng, Yuqing ^[1]; Gao, Jun ^[1]; Huang, Hua ^[1]; Zou, Minda ^[1]; Duffy, Jack ^[1];

^[1];

^[1]

Clemson Univ., SC (United States)

The present work describes a doping strategy to improve the electrochemical performance of BaCe(Zr)O₃-based reversible protonic ceramic electrochemical cells (RePCECs). BaCe_0.7Zr_0.1Y_0.2-xSm_xO_3-δ (0 ≤ x 0 ≤.2) synthesized by a solid-state reactive sintering method. Enhanced sintering with Sm-doping is observed with a significant increase of grain size as compared to un-doped samples. The improvement of the proton conductivity by proper Sm-doping is also achieved. This work fabricates and tests an electrochemical cell with a 25 μm thick electrolyte in both protonic ceramic fuel cell (PCFC) and protonic ceramic electrolysis cell (PCEC) operation modes. At the intermediate temperature of 600°C, a maximum power density of 410 mWcm^-2 is observed in PCFC mode under Air/H2 gradient, while a current density of 370 mAcm^-2 is obtained with an applied voltage of 1.3 V in PCEC mode using 12 vol% H₂O humidified air as feed gas and 5% H₂ as sweep gas

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Research Organization:: Clemson Univ., SC (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Hydrogen Fuel Cell Technologies Office (HFTO)

Grant/Contract Number:: EE0008428

OSTI ID:: 1574666

Alternate ID(s):: OSTI ID: 1564274

Journal Information:: Journal of Power Sources, Vol. 439, Issue C; ISSN 0378-7753

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 35 works

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References (35)

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Title: A high-performance reversible protonic ceramic electrochemical cell based on a novel Sm-doped BaCe0.7Zr0.1Y0.2O3-δ electrolyte

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Title: A high-performance reversible protonic ceramic electrochemical cell based on a novel Sm-doped BaCe_0.7Zr_0.1Y_0.2O_3-δ electrolyte