Stack materials and stack design
Fuel Cell Technology and Applications
Phosphoric acid fuel cells and systems (PAFC)
Published Online: 15 DEC 2010
Copyright © John Wiley & Sons, Ltd. All rights reserved.
Handbook of Fuel Cells
How to Cite
Breault, R. D. 2010. Stack materials and stack design. Handbook of Fuel Cells. .
- Published Online: 15 DEC 2010
The 35 year history of phosphoric acid fuel cell stack development at United Technologies Corporation is traced through three generations of power plants that culminated in the 200 kW ™PC-25 fuel cell power plant. The evolution of stack materials and designs for the electrolyte retaining matrix, electrode substrate, electrolyte reservoir plates, separator plates and coolers are described. Electrolyte management issues relating to water management, electrolyte distribution between cell components, freeze prevention, acid evaporation, and acid transfer by electrochemical pumping are reviewed. Corrosion issues relating to separator plates, anode corrosion, edge seal corrosion and operation at low power levels are discussed. Thoughts on potential improvements to reduce the cost and double the life of the phosphoric acid fuel cell stack are presented.
- phosphoric acid fuel cells;
- stack materials;
- electrolyte retaining matrix;
- electrode substrates;
- electrolyte reservoir plates;
- edge seals;
- separator plates;
- acid evaporation;
- acid transfer;