Department of Physics

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Author: search.filters.author.Dr. Rizwan RazaSubject: search.filters.subject.Fuel Cell

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    Direct Internal Reforming of Methane Fueled Solid Oxide Fuel Cell by Effective Catalyst
    (Library Information Services, COMSATS University Islamabad, Lahore Campus, 2017) MUHAMMAD UMAIR; CIIT/SP16-RPH-001/LHR; Dr. Rizwan Raza; LHR TP 6994
    Fuel cell is a device that produces power through chemical reaction without combustion. It is more effective among other source of energy. It is an environment friendly low or zero emission, high productivity, multi-fuel capacity, versatility. In this project, the work is done on the catalytic study of Solid Oxide Fuel Cell (SOFC). In SOFC, the most commonly materials are used ceramic based materials e.g. for electrolyte Yttria-Stabilized Zirconia(YSZ) but it require high working temperatures (700– 1000 °C) and can be keeping running on different fuels including natural gas. In this project, the electrode (LiNiCuZnFeO) is prepared by Solid State Reaction (SSR) method. The compatible electrolyte (LNK-SDC) is prepared by co-precipitation method. Three catalyst of different molar ratio of Barium Nickel Cobalt [Sample no.1 (Ba0.2Ni0.4CO0.4O3), Sample no.2 (Ba0.2Ni0.6CO0.2O3), Sample no.3 (Ba0.2Ni0.2CO0.8O3)] are prepared for direct internal reforming of SOFC using sol-gel method. Natural gas is used as a fuel for SOFC. The best performance of the cell is achieved at 650℃ with Sample no.2 (Ba0.2Ni0.6CO0.2O3) with maximum open circuit voltage (OCV) of 0.7V, current density of 250 mAcm-2 and power density of 64mWcm-2 with highest conductivity of 0.42 S/cm.
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    Synthesis of Catalyst for Direct Ethanol Fuel Cell and its Electrochemical Characterizations
    (Library Information Services, COMSATS University Islamabad, Lahore Campus, 2018) NAZIM ALI EJAZ; CIIT/SP16-RPH-004/LHR; Dr. Rizwan Raza; LHR TP 6910
    Fuel cell is a device which uses to generate electric current by chemical reaction without any kind of combustion and noise. It is environmental friendly and more efficient among all the other energy devices. Now the increasing interest of direct alcohol fuel cell (DAFC) is emphasized as an alternate source of clean, cheap, reliable and minimal environmental impact energy. Mostly methanol is used as a fuel but due to its toxicity, alternatively ethanol is used as a fuel due to its some advantages like nontoxic and its availability from biomass resources. In this research, a suitable catalyst for direct ethanol fuel cell (DEFC) is synthesized, which increase the rate of oxidation of ethanol into CO2. The purpose of this work is to reduce the poisoning effect which will increase the activity of electrode. The operating temperature of direct ethanol solid oxide fuel cell (DESOFC) is within the range 600-1000°C. Three samples with different molar ratio are prepared Li0.1Ni0.5Cu0.1Ce0.3 oxides, Li0.1Ni0.5Cu0.2Ce0.2 oxides and Li0.1Ni0.5Cu0.3Ce0.1 oxides by sol-gel method. The best results are shown by Li0.1Ni0.5Cu0.1Ce0.3 oxides the highest conductivity is 0.27 S/cm at 750°C and power density 20 mWcm-2 at 700°C observed.