Hydrogen Fuel Cell (PEM)

2H2 + O2 → 2H2O

개요

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.

참여 물질

역할 물질 계수 상태
생성물 Water H₂O 2 (l)

일상 속 예시

Toyota Mirai and Hyundai Nexo are hydrogen fuel cell cars that emit only water vapor from their tailpipes.

산업적 중요성

수소 전기차(FCEV), 선박, 드론, 건물용 분산 발전에 적용됩니다. 재생에너지 기반 그린 수소와 결합하면 탄소 중립 에너지 시스템 구축이 가능합니다.

성질

유형
Electrochemical
가역 반응
예
에너지
발열
ΔH
-572.0 kJ/mol
촉매
Platinum on carbon

관련 반응

Electrolysis of Water Electrolytic Production of Chlorate Electrorefining of Copper Alkaline Battery Discharge Anodizing of Aluminum Cathodic Protection (Zinc Sacrificial Anode) Chlor-Alkali Electrolysis Chrome Electroplating Nickel-Metal Hydride Battery Electrochemical CO₂ Reduction to CO

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).