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Fuel Cells
Fuel Cells convert an electrochemical reaction to electticity. There are applications that are sationary, portable and those used in transportation. All Fuel Cells are composed of an anode, cathode and electrolyte and are typically characterized by the composition of he electrolyte. The most common is the Proton Exchange Membrane (PEM). Others are Phospheric Acid (PAFC), Solid Oxide (SOFC), Molten Carbonate (MCFC) and Direct Methane (DMFC).
500 Questions
Why are fuel cells used on the space shuttle instead of batteries?
Asked by Wiki User
Two reasons:
- Weight. Batteries are heavier per energy unit than fuel cells.
- Capacity. Fuel cells can store much more energy than batteries.
As a bonus, the weight for the fuel cell fuel reduces the weight of another required consumable: water. The "exhaust" of fuel cells is pure water which astronauts can drink.
How does fuel cell differ from a battery?
Asked by Wiki User
A fuel cell is different from a battery cell in so far as reactants are constantly supplied to a fuel cell making it an open system whereas a battery cell is a closed system that stores the reactants within it. A fuel cell works as long as fuel is supplied to it whereas a battery cell requires regular replacements.
What are the advantages and disadvantages of using fuel cells compared to other types of electrochemical cells?
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Is Hydrogen Fuel Cells supposed to be capitalized?
Asked by Wiki User
No. Hydrogen fuel cell is not a title. You would only capitalize hydrogen if it was at the beginning of a sentence, as I did with this one. Otherwise, you would say 'hydrogen fuel cell'.
What do fuel cells batteries and solar cells have in common?
Asked by Wiki User
They all produce static electricity.
Where do you find the fuel cell in stick rpg 2?
Asked by Wiki User
You have to kill all the sewer people, the last person you kill will give you the fuel cell.
What is remarkable about fuel cells?
Asked by Wiki User
The only thing that comes out of the tailpipe is water! The other not so remarkable thing is the price.
A fuel cell is made up of two electrodes, and each one is an ion-transfer membrane (allows ions to pass through but not air or liquid). In between these membranes is a liquid called electrolyte, whose job is to carry ions from one electrode to the other. On the far side of the cathode (negatively charged electrode), hydrogen is pumped in, and on the far side of the anode (positively charged electrode), oxygen or air is pumped in. At the cathode, hydrogen is stripped of its electrons, which get removed by the electrode. This electricity is used to power lights, ovens, computers, etc.. The remaining hydrogen ions flow through the electrolyte and converge on the anode. On the return trip the electrons get fed into the anode where they are picked up by oxygen atoms, which then combine with the hydrogen ions to form water. Viola, you have a fuel cell.
The reason they are so expensive is because, at the anode, a catalyst such as platinum has to be used to help the reaction along. The other issue that is preventing widespread use of the fuel cell is that an effective hydrogen distribution system is not in place. You could have a fuel cell car, but where would you buy hydrogen?
What limitation affects electricity production using hydrogen fuel cells?
Asked by Wiki User
it is when u put the cookies in da soup and warm the soup up to roughly about 120 degrees so the cookies melt in the soup and long story short is that Orange Juice gives u the poots
What do you do with the fuel cell in stick rpg 2?
Asked by Wiki User
you have to defeat the sewer king then get into the sewer with the crowbar
Working principle of h2-o2 fuel cell?
Asked by Wiki User
Polymer Electrolyte Membrane (PEM) fuel cells used in automobiles-also called Proton Exchange Membrane fuel cells-use hydrogen fuel and oxygen from the air to produce electricity. The diagram to the right shows how a PEM fuel cell works.
Most fuel cells designed for use in vehicles produce less than 1.16 volts of electricity-far from enough to power a vehicle. Therefore, multiple cells must be assembled into a fuel cell stack. The potential power generated by a fuel cell stack depends on the number and size of the individual fuel cells that comprise the stack and the surface area of the PEM.
