High‐performance protonic ceramic fuel cells with electrode‐electrolyte composite cathode functional layers

2021 ◽  
Author(s):  
Sung Jea Yang ◽  
Wanhyuk Chang ◽  
Heon Jun Jeong ◽  
Dong Hwan Kim ◽  
Joon Hyung Shim
Keyword(s):  
Fuel Cells ◽  
High Performance ◽  
Composite Cathode ◽  
Ceramic Fuel ◽  
Ceramic Fuel Cells

scholarly journals High-Performance La0.5Ba0.5Co1/3Mn1/3Fe1/3O3−δ-BaZr1−zYzO3−δ Cathode Composites via an Exsolution Mechanism for Protonic Ceramic Fuel Cells

Inorganics ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 83 ◽  
Author(s):  
Laura Rioja-Monllor ◽  
Sandrine Ricote ◽  
Carlos Bernuy-Lopez ◽  
Tor Grande ◽  
Ryan O’Hayre ◽  
...  
Keyword(s):  
Fuel Cells ◽  
High Performance ◽  
Single Phase ◽  
Composite Cathode ◽  
Nominal Composition ◽  
Composite Cathodes ◽  
Phase Precursor ◽  
Ceramic Fuel ◽  
Two Phases ◽  
Ceramic Fuel Cells

A novel exsolution process was used to fabricate complex all-oxide nanocomposite cathodes for Protonic Ceramic Fuel Cells (PCFCs). The nanocomposite cathodes with La0.5Ba0.5Co1/3Mn1/3Fe1/3O3−δ-BaZr1−zYzO3−δ nominal composition were prepared from a single-phase precursor via an oxidation-driven exsolution mechanism. The exsolution process results in a highly nanostructured and intimately interconnected percolating network of the two final phases, one proton conducting (BaZr1−zYzO3−δ) and one mixed oxygen ion and electron conducting (La0.5Ba0.5Co1/3Mn1/3Fe1/3O3−δ), yielding excellent cathode performance. The cathode powder is synthesized as a single-phase cubic precursor by a modified Pechini route followed by annealing at 700 °C in N2. The precursor phase is exsolved into two cubic perovskite phases by further heat treatment in air. The phase composition and chemical composition of the two phases were confirmed by Rietveld refinement. The electrical conductivity of the composites was measured and the electrochemical performance was determined by impedance spectroscopy of symmetrical cells using BaZr0.9Y0.1O2.95 as electrolyte. Our results establish the potential of this exsolution method where a large number of different cations can be used to design composite cathodes. The La0.5Ba0.5Co1/3Mn1/3Fe1/3O3−δ-BaZr0.9Y0.1O2.95 composite cathode shows the best performance of 0.44 Ω∙cm2 at 600 °C in 3% moist synthetic air.

Probing novel triple phase conducting composite cathode for high performance protonic ceramic fuel cells

2016 ◽  
Vol 41 (9) ◽  
pp. 5074-5083 ◽  
Author(s):  
Geng Li ◽  
Yanxiang Zhang ◽  
Yihan Ling ◽  
Beibei He ◽  
Jianmei Xu ◽  
...  
Keyword(s):  
Fuel Cells ◽  
High Performance ◽  
Composite Cathode ◽  
Conducting Composite ◽  
Ceramic Fuel ◽  
Ceramic Fuel Cells

Influence of Cathode Porosity on High Performance Protonic Ceramic Fuel Cells with PrBa0.5Sr0.5Co1.5Fe0.5O5-δ Cathode

2018 ◽  
Vol 165 (13) ◽  
pp. F1098-F1102 ◽  
Author(s):  
Arim Seong ◽  
Junyoung Kim ◽  
Jeongwon Kim ◽  
Seona Kim ◽  
Sivaprakash Sengodan ◽  
...  
Keyword(s):  
Fuel Cells ◽  
High Performance ◽  
Ceramic Fuel ◽  
Ceramic Fuel Cells

Erratum: Influence of Cathode Porosity on High Performance Protonic Ceramic Fuel Cells with PrBa0.5Sr0.5Co1.5Fe0.5O5+δ Cathode [J. Electrochem. Soc., 165, F1098 (2018)]

2018 ◽  
Vol 165 (13) ◽  
pp. X16-X16
Author(s):  
Arim Seong ◽  
Junyoung Kim ◽  
Jeongwon Kim ◽  
Seona Kim ◽  
Sivaprakash Sengodan ◽  
...  
Keyword(s):  
Fuel Cells ◽  
High Performance ◽  
Ceramic Fuel ◽  
Ceramic Fuel Cells

Electrochemical analysis of high-performance protonic ceramic fuel cells based on a columnar-structured thin electrolyte

2019 ◽  
Vol 233-234 ◽  
pp. 29-36 ◽  
Author(s):  
Sung Min Choi ◽  
Hyegsoon An ◽  
Kyung Joong Yoon ◽  
Byung-Kook Kim ◽  
Hae-Weon Lee ◽  
...  
Keyword(s):  
Fuel Cells ◽  
High Performance ◽  
Electrochemical Analysis ◽  
Ceramic Fuel ◽  
Ceramic Fuel Cells
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