New Strategy for Boosting Cathodic Performance of Protonic Ceramic Fuel Cells Through Incorporating a Superior Hydronation Second Phase

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外文摘要：For protonic ceramic fuel cells,it is key to develop material with high intrinsic activity for oxygen activation and bulk proton conductivity enabling water formation at entire electrode surface.However,a higher water content which benefitting for the increasing proton conductivity will not only dilute the oxygen in the gas,but also suppress the O2 adsorption on the electrode surface.Herein,a new electrode design concept is proposed,that may overcome this dilemma.By introducing a second phase with high-hydrating capability into a conventional cobalt-free perovskite to form a unique nanocomposite electrode,high proton conductivity/concentration can be reached at low water content in atmosphere.In addition,the hydronation creates additional fast proton transport channel along the two-phase interface.As a result,high protonic conductivity is reached,leading to a new breakthrough in performance for proton ceramic fuel cells and electrolysis cells devices among available air electrodes.

外文关键词：

cathodehigh-hydrating capabilityproton conductivityprotonic ceramic fuel cells

作者：

Chuan Zhou、Xixi Wang、Dongliang Liu、Meijuan Fei、Jie Dai、Daqin Guan、Zhiwei Hu、Linjuan Zhang、Yu Wang、Wei Wang、Ryan O'Hayre、San Ping Jiang、Wei Zhou、Meilin Liu、Zongping Shao

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作者单位：

State Key Laboratory of Materials-Oriented Chemical Engineering,College of Chemical Engineering,Nanjing Tech University,Nanjing 210009,China

Max Planck Institute for Chemical Physics of Solids,Nöthnitzer Strasse 40,Dresden 01187,Germany

Key Laboratory of Interfacial Physics and Technology,Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China

Department of Metallurgical and Materials Engineering,Colorado School of Mines,Golden CO,USA

WA School of Mines:Minerals,Energy and Chemical Engineering(WASM-MECE),Curtin University,Perth WA 6102,Australia

Suzhou Laboratory,Suzhou 215000,China

School of Materials Science and Engineering,Georgia Institute of Technology,Atlanta,GA 30332-0245,USA

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基金：

National Key R&D Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaJiangsu Funding Program for Excellent Postdoctoral TalentPriority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)Max Planck-POSTECH-Hsinchu Center for Complex Phase MaterialsFulbright Foundation Global Scholars ProgramU.S.Army Research Office

项目编号：

2022YFB40025022227820322279057number W911NF-17-540 1-0051

出版年：

2024

DOI：

10.1002/eem2.12660

能源与环境材料(英文)

ISSN：

年,卷(期)：2024.7(4)