Composite electrolyte with proton conductivity for low-temperature solid oxide fuel cell

In the present work, cost-effective nanocomposite electrolyte (Ba-SDC) oxide is developed for efficient low-temperature solid oxide fuel cells (LTSOFCs). Analysis has shown that dual phase conduction of O−2 (oxygen ions) and H+ (protons) plays a significant role in the development of advanced LTSOFC...

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Bibliographic Details
Published in:Applied physics letters 2015-11, Vol.107 (18)
Main Authors: Raza, Rizwan, Ahmed, Akhlaq, Akram, Nadeem, Saleem, Muhammad, Niaz Akhtar, Majid, Sherazi, Tauqir A., Ajmal Khan, M., Abbas, Ghazanfar, Shakir, Imran, Mohsin, Munazza, Alvi, Farah, Javed, Muhammad Sufyan, Yasir Rafique, M., Zhu, Bin
Format: Article
Language:English
Subjects:
Applied physics
Conductivity
Electrochemical impedance spectroscopy
ELECTROLYTES
Electrolytic cells
HYDROGEN IONS 1 PLUS
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
Low temperature
Nanocomposites
OXIDES
OXYGEN IONS
PROTON CONDUCTIVITY
PROTONS
SCANNING ELECTRON MICROSCOPY
SOLID OXIDE FUEL CELLS
SPECTROSCOPY
Structural analysis
Sustainable development
TEMPERATURE RANGE 0400-1000 K
X-RAY DIFFRACTION
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Summary:In the present work, cost-effective nanocomposite electrolyte (Ba-SDC) oxide is developed for efficient low-temperature solid oxide fuel cells (LTSOFCs). Analysis has shown that dual phase conduction of O−2 (oxygen ions) and H+ (protons) plays a significant role in the development of advanced LTSOFCs. Comparatively high proton ion conductivity (0.19 s/cm) for LTSOFCs was achieved at low temperature (460 °C). In this article, the ionic conduction behaviour of LTSOFCs is explained by carrying out electrochemical impedance spectroscopy measurements. Further, the phase and structure analysis are investigated by X-ray diffraction and scanning electron microscopy techniques. Finally, we achieved an ionic transport number of the composite electrolyte for LTSOFCs as high as 0.95 and energy and power density of 90% and 550 mW/cm2, respectively, after sintering the composite electrolyte at 800 °C for 4 h, which is promising. Our current effort toward the development of an efficient, green, low-temperature solid oxide fuel cell with the incorporation of high proton conductivity composite electrolyte may open frontiers in the fields of energy and fuel cell technology.
ISSN:0003-6951
1077-3118
1077-3118
DOI:10.1063/1.4934940