Hydrogen Fuel Cell (PEM)
2H2 + O2 → 2H2O
نظرة عامة
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.
المشاركون
| الدور | المادة | المعامل | الحالة |
|---|---|---|---|
| منتج | Water H₂O | 2 | (l) |
مثال من الحياة اليومية
Toyota Mirai and Hyundai Nexo are hydrogen fuel cell cars that emit only water vapor from their tailpipes.
الأهمية الصناعية
Fuel cells power buses, forklifts, data center backup, and submarines. Global fuel cell revenue exceeds $5 billion and is growing rapidly.
الخصائص
- النوع
- Electrochemical
- قابل للعكس
- نعم
- الطاقة
- طارد للحرارة
- ΔH
- -572,0 kJ/mol
- محفز
- Platinum on carbon
التفاعلات ذات الصلة
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).