scholarly journals Electrical power generation with PEM FC using hydrogen supply through Mg-Ni reaction with water

Energetika ◽  
2016 ◽  
Vol 62 (1-2) ◽  
Author(s):  
Dalius Girdzevičius ◽  
Darius Milčius
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Hydrogen Production ◽  
Hydrogen Generation ◽  
Hydrogen Plasma ◽  
Electrical Power ◽  
Clean Energy ◽  
Xrd Analysis ◽  
Magnesium Hydride ◽  
Reaction With Water

Hydrogen is considered an energy vector of the future because of its potential use for clean energy generation. Portable electronic devices can be powered when hydrogen is supplied to fuel cells. In order to avoid massive equipment for hydrogen storage, direct hydrogen production can be achieved on-site during the reaction between metals/metal alloys/metal hydrides and water. Magnesium hydride offers great perspective for widespread applications as its weight yield of hydrogen reaches 6.4% according to the reaction with water and it can even increase to 15.2% if water produced in the fuel cell is used in the reaction again. In the  present work, Mg powder with the  content of Ni was synthesized under low temperature hydrogen plasma conditions changing the DC magnetron current from 0.5 to 1 A. As pure Mg powder was immersed into hydrogen plasma, the simultaneous hydrogenation process was ensured. Nickel was chosen as a catalyst capable to influence the growth of hydride. The process of electric power generation was investigated when reaction between modified Mg powder and water was applied to laboratory-built equipment consisting of a reactor for hydrogen production, gas dryer before H2 introduction to the  fuel cell, fuel cell, load and energy meter. Solutions of acetic acid and sodium chloride were used as promoters during powder-water reactions. The characterisation of predicted magnesium hydride powder was done using scanning electron microscopy, electron dispersive spectroscopy and X-ray diffraction. XRD analysis showed only Mg, MgO and Ni peaks indicating that hydrogen generation during powder-water reaction was evoked because of microgalvanic corrosion at Mg-Ni intersections.

A Highly Efficient Combined Cycle Fossil and Biomass Fuel Cell Power Generation and Hydrogen Production Plant With Zero CO2 Emission

2004 ◽  
Author(s):  
Meyer Steinberg
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Elemental Carbon ◽  
Hydrogen Plasma ◽  
Electrical Power ◽  
Rankine Cycle ◽  
Combined Cycle ◽  
Water Gas Shift ◽  
Direct Carbon Fuel Cell ◽  
Water Gas

An advanced combined cycle for fossil and biomass fuel power generation and hydrogen production is described. An electric arc hydrogen plasma black reactor (HPBR) decomposes the carbonaceous fuel (natural gas, oil, coal and biomass) to elemental carbon and hydrogen. When coal and biomass feedstocks are used, the contained oxygen converts to carbon monoxide. Any ash and sulfur present are separated and removed. The elemental carbon is fed to a molten carbonate direct carbon fuel cell (DCFC) to produce electrical power, part of which is fed back to power the hydrogen plasma. The hydrogen produced is used in a solid oxide fuel (SOFC) cell for power generation and the remaining high temperature energy in a back-end steam Rankine cycle (SRC) for additional power. Any CO formed is converted to hydrogen using a water gas shift reactor. The plasma reactor is 60% process efficient, the direct carbon fuel cell is up to 90% thermally efficient, the solid oxide fuel cell is 56% efficient and the steam Rankine cycle is 38% efficient. Depending on the feedstock, the combined cycles have efficiencies ranging from over 70% to exceeding 80% based on the higher heating value of the feedstock and are thus twice as high as conventional plants. The CO2 emissions are proportionately reduced. Since the CO2 from the direct carbon fuel cell and the water gas shift is highly concentrated, the CO2 can be sequestered to reduce emission to zero with much less energy loss than required by conventional plants. Alternatively, the combined cycle plants can produce hydrogen for the FreedomCAR program in combination with electrical power production at total thermal efficiencies greater than obtained with fossil fuel reforming and gasification plants producing hydrogen alone.

Photocatalytic Fuel Cell Using TiO2/ZnO/Zn Photoanode for Greywater and Bacteria Abatements with Power Generation Concomitantly

2019 ◽  
Vol 821 ◽  
pp. 366-371
Author(s):  
Sze Mun Lam ◽  
Joo Kheng Ooi ◽  
Ming Wei Kee ◽  
Jin Chung Sin
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Uv Light ◽  
Antibacterial Properties ◽  
Water Source ◽  
Clean Energy ◽  
Chemical Oxidation ◽  
Open Circuit ◽  
Photocatalytic Fuel Cell ◽  
Electrical Generation

Recycling of optional water source especially greywater and energy recovery from effluent is garnering impetus owing to clean water scarcity and energy crisis. In current work, photocatalytic fuel cell (PFC) utilizing a TiO2/ZnO/Zn photoanode and a CuO/Cu photocathode was developed for efficient greywater treatment and power generation. The photoelectrodes were measured by field-emission scanning electron microscopy (FESEM), energy dispersive X-ray (EDX) and photoluminescence (PL) measurements. Using 2 layers of TiO2/ZnO on Zn film, chemical oxidation demand (COD) removal efficiency had achieved 73% in the UV light-activated PFC system. The electrical generation was concomitantly found, in which the open-circuit voltage (Voc), short-current density (Jsc) and maximum power density (Pmax) were 634 mV, 0.1612 mA cm-2 and 0.0257 mW cm-2, respectively. The PFC has also revealed high antibacterial activity towards and Escherichia coli (E. coli), highlighting its potential photocatalytic and antibacterial properties for greywater reused and clean energy production.

Integrated methane decomposition and solid oxide fuel cell for efficient electrical power generation and carbon capture

2012 ◽  
Vol 90 (12) ◽  
pp. 2223-2234 ◽  
Author(s):  
Narisra Triphob ◽  
Suwimol Wongsakulphasatch ◽  
Worapon Kiatkittipong ◽  
Tawatchai Charinpanitkul ◽  
Piyasan Praserthdam ◽  
...  
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Electrical Power Generation ◽  
Carbon Capture ◽  
Electrical Power ◽  
Methane Decomposition ◽  
Solid Oxide ◽  
Oxide Fuel

scholarly journals Performance Analysis of Integrated Bio-Catalyst Microbial Fuel Cell with Different Asian Weather Conditions

2020 ◽  
Vol 9 (11) ◽  
pp. 99-103
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Electrical Power ◽  
Weather Conditions ◽  
Electrical Current ◽  
Energy Sources ◽  
Hybrid Energy ◽  
Proposed Model ◽  
The Impact

As the future energy generation, renewable energy as a cleaner energy is more targeted area of research. Microbial fuel cell (MFC) in hybrid energy sources, one can use wind, solar and MFC with its capability to use bio-catalytic and microorganisms to generate an electrical current. This research focuses on the impact of temperature on generation of energy for Maharashtra regions. The proposed framework presents the study about MFC bio-catalysts and its ability to produce electrical power. The proposed MFC model generates an optimum current by making use of bio-waste as the single electron donor. This paper presents impact of different weather temperatures on the power generation by proposed model.

Aircraft Engine Electrical Power Generation With a SOFC Combustor

2014 ◽  
Author(s):  
Rory A. Roberts ◽  
Peter Therkelsen
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Fuel Consumption ◽  
Electrical Power Generation ◽  
Electrical Power ◽  
Aircraft Engine ◽  
Specific Fuel Consumption ◽  
System Level ◽  
Combustion System ◽  
Generation Capacity

Next generation aircraft will require more onboard electrical power generation capacity as systems previously powered by engine bleed and hydraulics are electrified and new electricity based technologies are integrated. Increasing the amount of electrical power generated from aircraft main engines reduces thrust capacity and thrust specific fuel consumption (TSFC), but could increase specific fuel consumption (SFC). An alternative cycle with very high conversion efficiencies is proposed for electrical power production on aircraft. The unique cycle, termed a SOFC combustor, integrates a Solid Oxide Fuel Cell (SOFC) with existing onboard combustion based engines. The SOFC combustor produces direct current (DC) electrical power and provides high temperature exhaust for use in the expansion process of the aircraft engine. The SOFC combustor utilizes compressed air from the engine’s compressor and vaporized fuel to produce DC current. Fuel and air not utilized by the fuel cell are converted to thermal products by an aerodynamically stabilized combustion system capable of adapting to fuel/air and pressure variations. Hot products from the combustion system are returned to the main engines for use as thrust or mechanical shaft work. System level results will be presented for overall impact to aircraft engine specific fuel consumption.

Non-precious cobalt phthalocyanine-embedded iron ore electrocatalysts for hydrogen evolution reactions

2021 ◽  
Author(s):  
Keshavananda Prabhu CP ◽  
Shambhulinga Aralekallu ◽  
Veeresh A. Sajjan ◽  
Manjunatha Palanna ◽  
Sharath Kumar ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Energy Production ◽  
Iron Ore ◽  
Clean Energy ◽  
Cobalt Phthalocyanine ◽  
Hydrogen Evolution Reactions

Efficient water splitting reactions lead to sustainable hydrogen production, which is the fuel for fuel cell devices for clean energy production.

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