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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).
387 Questions
How could fuel cells give space crews electricity and water?
fuel cells converts chemical energy to eletrical power and the only waste product for fuel cells is water
What is the big problem with hydrogen fuel cells?
The main problem is that the hydrogen gas is difficult to store. Since it would have to highly pressurised, it would be inconvenient and dangerous to store in cars/automobiles.
Platinum is used in fuel cells primarily due to its excellent catalytic properties, which facilitate the reactions of hydrogen and oxygen, leading to efficient energy conversion. Its high stability and resistance to corrosion ensure longevity and reliability in various operating conditions. Although it's expensive, the performance benefits often justify its use in applications where efficiency and durability are critical, such as in automotive and stationary power generation systems. Additionally, ongoing research aims to reduce platinum usage or find alternatives to lower costs.
Do Hydrogen fuel cell have impact on society?
Yes, of course. It takes raw materials and engergy to produce a hydrogen fuel cell. It then takes raw materials and energy to produce the hydrogen fuel. However, the result of the hydrogen fuel cell combustion is water - this is a significant improvement over regular internal combustion engines which produce all kinds of exhaust fumes.
Assuming hydrogren fuel cells become wide spread then society will change in many ways from new jobs and new fuel refineries/distribution to new language/slang for the HFCs etc...
How many Watts would you get from 112 grams of hydrogen in a fuel cell?
To calculate the energy produced from 112 grams of hydrogen in a fuel cell, we first note that 1 mole of hydrogen (approximately 2 grams) produces about 286 kJ of energy when converted to water. Therefore, 112 grams of hydrogen corresponds to 56 moles. Multiplying 56 moles by 286 kJ gives approximately 16,016 kJ of energy. If this energy is converted over time, the power output in Watts will depend on the duration; for instance, if released over one hour, it would yield about 4,448 Watts.
Can you use aluminum as catalyst in an alkaline fuel cell?
If you mean Aluminum metal, then answer is No. This is because aluminum will dissolve in alkali as aluminate ions.
Principle of operation of a fuel cell?
A fuel cell generates electricity through an electrochemical reaction between a fuel (like hydrogen) and an oxidant (like oxygen). The fuel is oxidized at the anode, releasing electrons that flow through an external circuit to the cathode, where they combine with the oxidant and protons to produce water and heat. This process generates electricity that can be used to power electrical devices.
Does hydrogen fuel cells pollute?
No they don't When hydrogen (electrode in the cell) reacts with oxygen ( catalyst in the cell), it's chemical reaction converts the hydrogen gas to negatively charged electrons (-e) and positively charged hydrogen ions (H+). As for the pollution factor, the ONLY Bi-product from hydrogen cells is Water (H2O). I hope you understood all that (as you would need to know how a battery cell works).
How does a fuel cell car works?
it uses electricity to turn water into pure oxygen and hydrogen then uses those gasses to produce electricityand it does this using a reversible Proton Exchange Membrane
Where is the fuel cell located on a 1998 jaguar xj8?
It is located behind rear passenger seat. It can be accessed through the trunk.
