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Fuel cells and characteristics

Anode Catalysts for Alkaline Direct Alcohol Fuel Cells and Characteristics of the Catalyst Layer... [Pg.89]

Figure 14.10 gives a schematic presentation of the current-voltage characteristics of hydrogen and oxygen on platinum. The theoretical open circuit cell voltage at 25 °C and standard conditions is 1.229 V, for both the fuel cell and electrolyzer. [Pg.314]

Fig. 14.10 Current-voltage characteristics of hydrogen oxidation and oxygen reduction in a fuel cell, and hydrogen and oxygen evolution in an electrolyzer. Fig. 14.10 Current-voltage characteristics of hydrogen oxidation and oxygen reduction in a fuel cell, and hydrogen and oxygen evolution in an electrolyzer.
Other characteristics that fuel cells and fuel cell plants offer are... [Pg.25]

Connection to the utility grid provides many advantages to on-site power producers such as reliability improvement and increase of load factor, as well as giving the electric utilities a chance to improve the supply capability. When a fuel cell power plant is used for electric utility applications, the inverter is the interface equipment between the fuel cell and the electrical network. The inverter acts as the voltage and frequency adjuster to the final load. The interface conditions require the following characteristics for the inverter ... [Pg.227]

Transport properties of hydrated PFSA membranes strongly depend on nanophase-segregated morphology, water content, and state of water. In an operational fuel cell, these characteristics are indirectly determined by the humidity level of the reactant streams and Faradaic current densities generated in electrodes, as well as the transport properhes of catalyst layers, gas diffusion layers, and flow... [Pg.359]

Bowlan, P. and Hanoley, L.M., in "First Generation Fuel Cell Powerplant Characteristics,"United Technol. publication, Nov. 1977. [Pg.320]

Bauen, A. Hart, D., 1998, Further Assessment of the Environmental Characteristics of Fuel Cells and Competing Technologies. A study conducted for the UK DTI Fuel Cell Programme - http //www.env.ic.ac.uk/research/epmg/DavidFur-ass.html... [Pg.94]

Zr02 was one of the earliest ceramics in which conduction by oxygen ions was observed and now this characteristic is exploited in fuel cell and sensor technologies (see Sections 4.5.3 and 4.6.1). [Pg.145]

Ragone plots reveal some characteristic differences of fuel cells and batteries. To put the matter succinctly, batteries are known for their power and fuel cells for their energy, both per unit of weight. Discuss these characteristics as the basis for hybrid designs in the powering of automobiles. (Bockris)... [Pg.385]

It is expected that the intermacromolecular complexes display entirely new physical and chemical characteristics different from those of the individual polymer components. So the following applications are, for example, considered membranes for dialysis, ultrafiltration, fuel cells and battery separators, wearing apparel, electrically conductive and antistatic coatings for textiles, medical and surgical prosthetic materials, environmental sensors or chemical detectors, and electrodes modified with specific polymers. [Pg.101]

The membrane electrode assembly (MEA), which consists of three components (two gas diffusion electrodes with a proton exchange membrane in between), is the most important component of the PEMFC. The MEA exerts the largest influence on the performance of a fuel cell, and the properties of each of its parts in turn play significant roles in that performance. Although all the components in the MEA are important, the gas diffusion electrode attracts more attention because of its complexity and functions. In AC impedance spectra, the proton exchange membrane usually exhibits resistance characteristics the features of these spectra reflect the properties of the gas diffusion electrode. In order to better understand the behaviour of a gas diffusion electrode, we introduce the thin-film/flooded agglomerate model, which has been successfully applied by many researchers to... [Pg.263]

Electrochemical phenomenon associated with systems from electrochemical energy (Batteries, Fuel cells and capacitors) to electro deposition are multistep and multi-phenomena processes and hence can be veiy tedious to simulate. The multi-phenomena characteristics of the processes involved in electro deposition and other electrochemical systems including electrochemical power... [Pg.315]

The relatively slow rate of hydrocarbon fuel cell oxidations prompted an intensive examination of the adsorption characteristics of organic reactants in the 1960s. Because of the low potential for the development of hydrocarbon fuel cells, such studies have largely subsided today and no modern surface analysis techniques have been applied to characterize intermediates. Conventional adsorption studies of carbonaceous species have been reviewed repeatedly (7, 9-12, 100 -, therefore, we summarize here only some essential adsorption features for fuel cell and selective electrocatalytic oxidations. [Pg.254]

Unlike a common chemical battery, the metal plates and electrolytes in the fuel cell are unchanged by the chemical reactions producing the electric current. Hydrogen and air enter the fuel cell and water and an electric current are produced. These characteristics provide the fuel cell with three great advantages compared to other batteries. [Pg.143]

Table 3.2 Classification of fuel cells and their main characteristics... Table 3.2 Classification of fuel cells and their main characteristics...

See other pages where Fuel cells and characteristics is mentioned: [Pg.2410]    [Pg.43]    [Pg.46]    [Pg.434]    [Pg.508]    [Pg.41]    [Pg.88]    [Pg.200]    [Pg.177]    [Pg.2165]    [Pg.220]    [Pg.46]    [Pg.78]    [Pg.2661]    [Pg.252]    [Pg.35]    [Pg.8]   
See also in sourсe #XX -- [ Pg.2 , Pg.32 ]




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Fuel cells characteristics

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