Hydrogen Fuel Cell (PEM)
2H2 + O2 → 2H2O
Обзор
In a proton exchange membrane (PEM) fuel cell, hydrogen is oxidized at the anode and oxygen is reduced at the cathode, separated by a Nafion membrane. Protons pass through the membrane while electrons flow through an external circuit, producing electricity, water, and heat. Efficiency is 40–60%, roughly double that of combustion engines.
Участники
| Роль | Вещество | Коэффициент | Состояние |
|---|---|---|---|
| Продукт | Water H₂O | 2 | (l) |
Пример из жизни
Toyota Mirai and Hyundai Nexo are hydrogen fuel cell cars that emit only water vapor from their tailpipes.
Промышленное значение
Fuel cells power buses, forklifts, data center backup, and submarines. Global fuel cell revenue exceeds $5 billion and is growing rapidly.
Свойства
- Тип
- Electrochemical
- Обратимая
- Да
- Энергия
- Экзотермическая
- ΔH
- -572,0 kJ/mol
- Катализатор
- Platinum on carbon
Связанные реакции
Electrorefining of Copper
Alkaline Battery Discharge
Anodizing of Aluminum
Chlor-Alkali Electrolysis
Nickel-Metal Hydride Battery
Daniell Cell (Zinc-Copper Galvanic Cell)
Electrolysis of Molten NaCl (Downs Process)
Lead-Acid Battery Discharge
Hall-Héroult Process (Aluminum Smelting)
Electrolysis of Water
Frequently Asked Questions
What is the equation for Hydrogen Fuel Cell (PEM)?
The balanced equation is: 2H₂ + O₂ → 2H₂O.
What type of reaction is Hydrogen Fuel Cell (PEM)?
Hydrogen Fuel Cell (PEM) is a electrochemical reaction. It is reversible under certain conditions.
Is Hydrogen Fuel Cell (PEM) exothermic or endothermic?
Hydrogen Fuel Cell (PEM) is exothermic (releases energy). The enthalpy change (ΔH) is -572.0 kJ/mol.
What conditions are needed for Hydrogen Fuel Cell (PEM)?
This reaction requires a catalyst (Platinum on carbon).