Pafc Fuel Cell Working

Most fuel cell systems that were sold before 2001 for the stationary power generation application used pafc technology.

Pafc fuel cell working.

This makes it unsuitable for use in cars. These fuel cells can work at up to 60 efficiency for fuel to electricity conversion and overall efficiencies can be over 80 in chp or ccp applications where the process heat is also utilised. A phosphoric acid fuel cell pafc is composed of two porous gas diffusion electrodes namely cathode and anode juxtaposed against a porous electrolyte matrix. Alkaline fuel cells afcs generally use a solution of potassium hydroxide in water as their electrolyte and the operating temperature is 150 c 200 c.

As the name suggests pafcs use phosphoric acid as the electrolyte. Phosphoric acid fuel cells pafc are a type of fuel cell that uses liquid phosphoric acid as an electrolyte they were the first fuel cells to be commercialized. Most fuel cell units sold before 2001 used pafc technology. Phosphoric acid fuel cell pafc the phosphoric acid fuel cell has potential for use in small stationary power generation systems.

The gas diffusion electrodes are composed of a porous substrate carbon or cloth facing the gas feed and a reactive catalyst layer consisting of platinized. Phosphoric acid fuel cells pafc operate at temperatures around 150 to 200 c about 300 to 400 degrees f. Definition of fuel cell construction and working of pafc phospheric acid fuel cell. This type of fuel cell is used in stationary power generators with output in the 100 kw to 400 kw range to power many commercial premises around the world and they are also finding application in large vehicles such as buses.

Developed in the mid 1960s and field tested since the 1970s they have improved significantly in stability performance and cost. Phosphoric acid fuel cells pafc the pafc technology is the most advanced fuel cell technology for development and commercial purposes. Afc uses platinum electrode catalysts. Direct methanol fuel cell dmfc.

It operates at a higher temperature than polymer exchange membrane fuel cells so it has a longer warm up time. Positively charged hydrogen ions migrate through the electrolyte from the anode to the cathode. Fuel cells are different from most batteries in requiring a continuous source of fuel and oxygen usually from air to sustain the chemical reaction whereas in a battery the chemical energy usually comes. 2 pafc working principle.

Electrons generated at the.