Browsing by Author "LHR TP 9627"

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    Development of Efficient Electrolyte for Semiconductor Ionic Membrane Fuel Cell
    (Library Information Services, COMSATS University Islamabad, Lahore Campus, 2024) Muhammad Danish; CIIT/SP23-RPH-006/LHR; Prof. Dr. M Ashfaq Ahmad; LHR TP 9627
    In this study, electrolyte was fabricated for semiconductor ionic membrane fuel cells. Barium and Bismuth doping with ceria electrolyte for semiconductor ionic membrane fuel cell was prepared successfully. All of these samples were prepared by co- precipitation method. These synthesized electrolyte materials give better results and beneficial for more oxygen ions vacancies which oxidation reduction reaction enhanced. The synthesized material characterized by using FTIR Spectroscopy, Raman Spectroscopy, UV-Vis spectroscopy, X-ray diffraction and Electrochemical Impedance Spectroscopy. Raman spectra show vibration modes and the structure of materials particles. Raman analysis of samples was done from 700- 900 °C. These results showed the strong peak of cerium oxide in range of 450 to 470nm and the weak intense peak representing oxygen ion vacancies. It indicates the kind of shifting that is taking place in the prepared material. Blue shifting and a decreasing wavelength are seen in all produced materials, indicating a decrease in particle size. In UV-Vis spectroscopy result demonstrated the band gap values which ranges from 3.28 eV for BaCeO2, 3.39 eV for BiCeO2, and 3.3 eV for co doped BaBiCeO2. With the help of XRD compositions and structure was confirmed, which is found to be cubic. EIS tells about the ionic and electronic behavior of materials. The maximum OCV of 888V for BaCeO, 550V for BiCeO and 732V for BaBiCeO at 550°C. The maximum current density of 309mA/cm2 for BaCeO, 202mA/cm2 for BiCeO and 123mA/cm2 for BaBiCeO at 550°C. The maximum power density of 93.3mW/cm2 for BaCeO, 33.27mW/cm2 for BiCeO and 31.6mW/cm2 for BaBiCeO at 550°C.