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Title: 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{sup −2} (oxygen ions) and H{sup +} (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/cm{sup 2}, 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.
Authors:
 [1] ;  [2] ; ; ; ; ; ; ; ;  [1] ;  [3] ;  [4] ;  [5] ;  [1] ;  [6] ;  [7] ;  [6]
  1. Department of Physics, COMSATS Institute of Information Technology, Lahore 54000 (Pakistan)
  2. (Sweden)
  3. Department of Chemistry, COMSATS Institute of Information Technology, Abbotabad 22060 (Pakistan)
  4. Sustainable Energy Technologies (SET) center, College of Engineering, King Saud University, PO-BOX 800, Riyadh 11421 (Saudi Arabia)
  5. Department of Physics, Lahore College for Women University, Lahore, 54000 (Pakistan)
  6. (China)
  7. Department of Energy Technology, Royal Institute of Technology, KTH, Stockholm 10044 (Sweden)
Publication Date:
OSTI Identifier:
22486023
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 18; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ELECTROLYTES; HYDROGEN IONS 1 PLUS; OXIDES; OXYGEN IONS; PROTON CONDUCTIVITY; PROTONS; SCANNING ELECTRON MICROSCOPY; SOLID OXIDE FUEL CELLS; SPECTROSCOPY; TEMPERATURE RANGE 0400-1000 K; X-RAY DIFFRACTION