High‐Performance Protonic Ceramic Fuel Cells with 1 µm Thick Y:Ba(Ce, Zr)O3 Electrolytes

This study demonstrates the effectiveness of using thin‐film electrolytes to enhance protonic ceramic fuel cells (PCFCs). The material tested in this study is yttrium‐doped barium cerate‐zirconate (BCZY), which is a representative electrolyte material of PCFCs. The thickness of the electrolyte membrane is as small as 1 µm and designed to minimize ohmic loss in proton transport pathways. Integration of this thin BCZY electrolyte is attempted on a multilayered anode comprised of two‐step supports with bulk nickel‐yttria stabilized zirconia cermet as a base and thin nickel‐BCZY as an anode functional layer atop the base. The compatibility of this support with the deposited thin electrolyte is able to be confirmed from the results of iterated tests. The power of the fabricated cell is greater than 1.1 W cm−2 at 600 °C, which is a record high for PCFCs and is reproducible. In this paper, the origin of this high power is discussed and improvements that could be made to cell performance are further suggested.

[1]  H. J. Choi,et al.  Demonstrating the potential of yttrium-doped barium zirconate electrolyte for high-performance fuel cells , 2017, Nature Communications.

[2]  G. Taillades,et al.  High performance anode-supported proton ceramic fuel cell elaborated by wet powder spraying , 2016 .

[3]  Hyoungchul Kim,et al.  High-performance thin-film protonic ceramic fuel cells fabricated on anode supports with a non-proton-conducting ceramic matrix , 2016 .

[4]  Juergen Fleig,et al.  The Superior Properties of La0.6Ba0.4CoO3-δ Thin Film Electrodes for Oxygen Exchange in Comparison to La0.6Sr0.4CoO3-δ , 2016 .

[5]  Ali Almansoori,et al.  Readily processed protonic ceramic fuel cells with high performance at low temperatures , 2015, Science.

[6]  P. Tsiakaras,et al.  Thermal expansion of materials in the barium cerate-zirconate system , 2015 .

[7]  K. Yoon,et al.  Determination of proton transference number of Ba(Zr0.84Y0.15Cu0.01)O3−δ via electrochemical concentration cell test , 2013, Journal of Solid State Electrochemistry.

[8]  Ji-won Son,et al.  Three dimensional representations of partial ionic and electronic conductivity based on defect structure analysis of BaZr0.85Y0.15O3−δ , 2011 .

[9]  Young Beom Kim,et al.  Crater patterned 3-D proton conducting ceramic fuel cell architecture with ultra thin Y:BaZrO3 electrolyte , 2011 .

[10]  N. Bonanos,et al.  Conductivity, transport number measurements and hydration thermodynamics of BaCe0.2Zr0.7Y(0.1 − ξ)NiξO(3 − δ) , 2011 .

[11]  Ji-won Son,et al.  Transmission Electron Microscopy Study on Microstructure and Interfacial Property of Thin Film Electrolyte SOFC , 2011 .

[12]  E. Traversa,et al.  Chemically Stable Pr and Y Co‐Doped Barium Zirconate Electrolytes with High Proton Conductivity for Intermediate‐Temperature Solid Oxide Fuel Cells , 2011 .

[13]  Donglin Han,et al.  Synthesis of La1 − xSrxSc1 − yFeyO3 − δ (LSSF) and measurement of water content in LSSF, LSCF and LSC hydrated in wet artificial air at 300 °C , 2010 .

[14]  Emiliana Fabbri,et al.  Materials challenges toward proton-conducting oxide fuel cells: a critical review. , 2010, Chemical Society reviews.

[15]  Sun-Ju Song,et al.  Partial conductivities of mixed conducting BaCe0.65Zr0.2Y0.15O3–δ , 2010 .

[16]  Allan J. Jacobson,et al.  Materials for Solid Oxide Fuel Cells , 2010 .

[17]  G. Meng,et al.  Characterization and evaluation of NdBaCo2O5+δ cathode for proton-conducting solid oxide fuel cells , 2010 .

[18]  F. Prinz,et al.  Intermediate-Temperature Ceramic Fuel Cells with Thin Film Yttrium-Doped Barium Zirconate Electrolytes , 2009 .

[19]  Meilin Liu,et al.  A Novel Composite Cathode for Low‐Temperature SOFCs Based on Oxide Proton Conductors , 2008 .

[20]  S. Licoccia,et al.  Tailoring the chemical stability of Ba(Ce0.8−xZrx)Y0.2O3−δ protonic conductors for Intermediate Temperature Solid Oxide Fuel Cells (IT-SOFCs) , 2008 .

[21]  F. Prinz,et al.  Proton conduction in thin film yttrium-doped barium zirconate , 2008 .

[22]  J. M. Serra,et al.  Thin-film proton BaZr0.85Y0.15O3 conducting electrolytes : Toward an intermediate-temperature solid oxide fuel cell alternative , 2007 .

[23]  K. Kreuer.  First published online as a Review in Advance on April 9, 2003 PROTON-CONDUCTING OXIDES , 2022 .