Browsing by Author "Muhammad Amir"

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    Boosting the Electrochemical Activity of BSMO Cathode by Compositing (Sm0.20Ce0.50Bi0.30)2O3+δ for Low Temperature Solid Oxide Fuel Cell
    (Library Information Services, COMSATS University Islamabad, Lahore Campus, 2025) Muhammad Amir; CIIT/SP24-RPH-006/LHR; Dr. Ghazanfar Abbas; LHR TP 10120
    Among energy conversion devices solid oxide fuel cells (SOFCs)are promising candidates due to their fuel flexibility and highly efficient; though, but their commercial application is limited due the high temperature. In this research work barium and strontium based low temperature solid oxide fuel cells (LT-SOFCs) were fabricated and characterized as cathode material for LT-SOFCs. Solid state method was adopted to synthesize barium strontium manganese oxide (Ba₀.₇₅Sr₀.₂₅MnO)₃−δ (BSMO) and (Sm₀.₂₀Ce₀.₅₀Bi₀.₃₀)₂O₃+δ (SCBO) was synthesized via the reverse co-precipitation route. The crystallographic crystal of the synthesized material was analyzed by employing XRD and all the samples shows highly crystalline structure. The characteristic vibrational modes of Sm-O, Ba–O, Ce-O, and Mn–O were confirmed from Raman spectroscopy. The BSMO, SCBO and BSMO/SCBO composite were fabricated via solid state mixing and electrochemical impedance spectroscopy (EIS) spectroscopy measurements were recorded with in the temperature range 400oC-700oC and enhanced electrochemical characteristics of the SCBO material was observed. It was observed that the BSMO/SCBO composite exhibited lower polarization resistance compared to pristine BSMO and SCBO within the temperature range of 550°C –650 °C, that results the improved ionic–electronic conductivity balance and enhanced charge transfer. DC conductivity measurements showed the semiconducting behavior of BSMO material and reduce and stable conductivity for SCBO, and intermediate conductivity value of conductivity for the composite material. All samples show the high open circuit voltage value (1.05 V) at 650 °C. The Fourier transfer Infrared (FTIR) spectroscopy was employed to study the functional groups. The results shows that the synthesized novel BSMO, SCBO and their composites can be the efficient materials for the future low temperature SOFCs applications.
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    Online Computer and Parts Purchasing
    (Library Information Services, COMSATS University Islamabad, Lahore Campus., 2020-11-20) Muhammad Amir; CIIT/SP16- BCS- 180/LHR; Abdul Karim Shahid; LHR TP 6304
    In our final year project, we are aiming to develop an online shopping system that allows customers online order submission for computers and their hardware components on web store. The proposed system focuses on providing the users/customers access to available products in local markets sitting home, and let suppliers to display their products or unique items, inter-acting many potential customers on website at same time. This system provides a medium of interaction to both users/customers and suppliers/vendors. Customers/client can search for a computer or laptop with desired specifications. If they want to buy multiple items, they will add those items in cart until they are finished. After confirming the order, purchased items will be delivered to authorized customer/client within a small span of time. After confirming the order, customer/client can print the copy of transaction. Customers/clients will pay for order on delivery; they don’t need to pay in advance. Supplier/vendors can add their products they wanted to sell, can observe buyers feedback upon their products and quality.