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Fuel electrode

In the phosphoric acid fuel cell as currently practiced, a premium (hydrogen rich) hydrocarbon (e.g. methane) fuel is steam reformed to produce a hydrogen feedstock to the cell stack for direct (electrochemical) conversion to electrical energy. At the fuel electrode, hydrogen ionization is accomplished by use of a catalytic material (e.g. Pt, Pd, or Ru) to form solvated protons. [Pg.575]

A. A. Karyakin, S. V. Morozov, E. E. Karyakina, S. D. Varfolomeyev, N. A. Zorin, S. Cosnier (2002) Hydrogen fuel electrode based on bioelectrocatalysis by enzyme hydrogenase. Electrochem. Commun., 4 417-420... [Pg.40]

In addition, silicon (Si), which also can be found in coal gas, has been studied (35) as a contaminant. It is believed to accumulate on the fuel electrode in the form of silica (Si02). The deposition of the Si throughout the cell has been found to be enhanced by high (-50%)... [Pg.192]

The operating principle of a SOFC is schematically shown in Fig. 11.25. When an external load is applied to the cell, oxygen is reduced at the porous air electrode to produce oxide ions. These ions migrate through the solid electrolyte to the fuel electrode, and oxide ions react with the fuel, or CO, to produce HjO or COj. [Pg.317]

Fuel electrode Ni-Zr02(Y2Q3) 100 pm Slurry coat-electrochemical vapour deposition... [Pg.318]

Fuel electrode (porous) Interconnection (impermeable) Air electrode (porous)... [Pg.319]

Schematically speaking an elementary SOFC is composed of a solid oxide electrolyte, an oxygen electrode (cathode) and a fuel electrode (anode), as shown in Fig. 1. To form a battery, several elementary cells must be connected using an appropriate material. A SOFC may be considered as an oxygen concentration cell [6] of the following type... Schematically speaking an elementary SOFC is composed of a solid oxide electrolyte, an oxygen electrode (cathode) and a fuel electrode (anode), as shown in Fig. 1. To form a battery, several elementary cells must be connected using an appropriate material. A SOFC may be considered as an oxygen concentration cell [6] of the following type...
Fuel Electrode-Type Material Over Interconnection is the ... [Pg.122]

The SOFC, like other fuel cells, is an electrochemical device for the conversion of chemical energy of a fuel into electricity and heat. The fuel, for example, hydrogen is not combusted but electro-oxidized at the anode (fuel electrode) by oxygen ions conducted across the electrolyte according to the following overall reaction... [Pg.3]

The anode (fuel electrode) consists of an approximately 120/rm thick Ni/YSZ cermet layer. This is achieved simply by applying a slurry of nickel and YSZ powders to the electrolyte and sintering. A cross-section of the 3-layer microstructure is shown in Fig. 4.33. [Pg.192]

The anode (the fuel electrode) must also have electrical conductivity, thermal expansion compatibility, and porosity, and must function in a reducing atmosphere. The reducing conditions combined with electrical conductivity requirements make metals attractive materials candidates. Recent development has focused on a Ni-YSZ composite in which the YSZ provides structural support for separated Ni particles, preventing them from sintering together while matching the thermal expansions. [Pg.618]

The work reported by Ralph etal. (2003) is a well-rounded, self-contained essay on the DMFC. (See DMFC flow sheet in Figure 6.6.) Moreover, because Ballard/Johnson Matthey did not contribute on fuel cells at the Palm Springs Fuel Cell Seminar in 2002 (see below), Ralph etal. (2003) is the current information source, additional to the patents in the list of references. Note that the methanol-water mixture presents to the fuel electrode its associated methanol vapour pressure. The DMFC does not have an incompressible fuel. The cell needs circulators. It is incomplete. [Pg.115]

See other pages where Fuel electrode is mentioned: [Pg.585]    [Pg.2411]    [Pg.318]    [Pg.110]    [Pg.131]    [Pg.134]    [Pg.136]    [Pg.252]    [Pg.180]    [Pg.180]    [Pg.184]    [Pg.319]    [Pg.319]    [Pg.47]    [Pg.25]    [Pg.608]    [Pg.591]    [Pg.592]    [Pg.416]    [Pg.212]    [Pg.690]    [Pg.122]    [Pg.122]    [Pg.122]    [Pg.126]    [Pg.294]    [Pg.36]    [Pg.190]    [Pg.410]    [Pg.617]    [Pg.591]    [Pg.592]    [Pg.13]    [Pg.75]    [Pg.2166]    [Pg.46]    [Pg.48]    [Pg.49]   
See also in sourсe #XX -- [ Pg.8 , Pg.8 , Pg.9 , Pg.9 , Pg.10 , Pg.10 , Pg.11 , Pg.11 , Pg.12 , Pg.13 , Pg.14 , Pg.15 , Pg.16 , Pg.17 , Pg.18 , Pg.19 ]



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