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Fuel Cells pp 369-389 | Cite as

Phosphoric Acid Fuel Cells for Stationary Applications

Chapter

Abstract

Fuel cells generate power by electrochemically combining fuel such as hydrogen and oxidant such as oxygen in air to produce electrical and thermal energy. Fuel cells generally consist of an anode electrode where fuel is oxidized and cathode electrode where oxygen in air is reduced. The electrolyte which is usually placed between the two electrodes acts as a medium to transport charge carriers (e.g., H+, CO). Fuel cells are particularly interesting as energy generating devices because they consume reactants without combustion, thus providing higher efficiencies and avoiding the issue of pollution. A fuel cell reaction typically produces water as a by-product which is usually removed from the cell by reactant exhaust.

Keywords

Fuel Cell Catalyst Layer Bipolar Plate Fuel Cell System Cathode Catalyst Layer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Glossary

ADG

Anaerobic digester gas.

BOP

Balance of plant. Involves components other than fuel cell stacks in a power plant.

Bubble pressure

Ability of a component filled with acid to withstand a given pressure of gas.

Carbonization

This process involves heating resin-impregnated material to ∼1,000°C to carbonize.

CH4

Methane.

CHP

Combined heat and power. Equipment that generates both electrical and thermal energy.

Cloud tower

Equipment to deposit catalyst onto GDL.

ECA

Electrochemical area, ideally the Pt surface area available for oxygen reduction or Hydrogen oxidation reaction.

Efficiency

Energy output/Energy input.

ETU

Electrolyte take-up: Quantity of electrolyte (H3PO4) taken up by a unit weight of carbon.

FEP

Fluorinated ethylene propylene.

Floc

Mixture of carbon-coated catalyst and PTFE®.

GDL

Gas diffusion layers.

GDL

Gas diffusion layers or substrates.

Graphitization

This process involves in heating carbon material to temperatures of 2,500–3,000°C to improve thermal conductivity and corrosion resistance.

H2

Hydrogen.

H3PO4

Phosphoric acid.

HT-PEM

High-temperature polymer electrolyte membrane fuel cell.

Ionic resistance

Resistance for the flow of H+ through the electrolyte matrix.

kW

Kilo watts.

NG

Natural gas.

O2

Oxygen.

PAFC

Phosphoric acid fuel cell.

PAN

Polyacrylonitrile.

Performance decay

Loss of fuel cell performance due to kinetic, ionic, or mass transport losses.

PTFE®

Polytetrafluoroethylene.

SiC

Silicon Carbide.

Notes

Acknowledgments

The authors would like to acknowledge Tom Jarvi for his valuable input into framing the outline for the entry.

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.UTC PowerSouth WindsorUSA

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