What is proton exchange membrane fuel cell products?
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What is proton exchange membrane fuel cell products?
A proton exchange membrane fuel cell transforms the chemical energy liberated during the electrochemical reaction of hydrogen and oxygen to electrical energy, as opposed to the direct combustion of hydrogen and oxygen gases to produce thermal energy.
How does a proton exchange membrane fuel cell work?
The proton exchange membrane fuel cell (PEMFC) uses a water-based, acidic polymer membrane as its electrolyte, with platinum-based electrodes. The protons pass through the membrane to the cathode side of the cell while the electrons travel in an external circuit, generating the electrical output of the cell.
What is the role of membrane in fuel cell?
To complete the electrochemical reaction, the proton exchange membrane plays a critical role that conducts protons from anode to cathode through the membrane. The proton exchange membrane also performs as a separator for separating anode and cathode reactants in fuel cells and electrolyzers.
What membrane is used in fuel cell?
Polymer electrolyte membrane
Polymer electrolyte membrane (PEM) fuel cells, also called proton exchange membrane fuel cells, use a proton-conducting polymer membrane as the electrolyte. Hydrogen is typically used as the fuel. These cells operate at relatively low temperatures and can quickly vary their output to meet shifting power demands.
What does a fuel cell burns for electricity?
A fuel cell uses the chemical energy of hydrogen or other fuels to cleanly and efficiently produce electricity. If hydrogen is the fuel, the only products are electricity, water, and heat.
What is the typical cell output voltage of a proton exchange fuel cell?
A typical fuel cell produces a voltage from 0.6 to 0.7 V at full rated load. Voltage decreases as current increases, due to several factors: Activation loss.
What is the operating temperature of proton exchange membrane fuel?
between 120 °C and 180 °C
A suitable operating temperature is between 120 °C and 180 °C, and the formation of liquid water must be avoided to prevent leaching of the electrolyte composition.