Hydrogen Fuel Cell
An electrochemical device that converts hydrogen and oxygen into electricity, producing only water and heat as byproducts, used to power vehicles, buildings, and portable equipment.
Green TransportA hydrogen fuel cell generates electricity through an electrochemical reaction between hydrogen and oxygen. Unlike batteries, fuel cells produce power continuously as long as fuel is supplied. The only direct emissions are water vapor and heat, making them an attractive zero-emission technology.
How It Works
Hydrogen gas enters the anode side of the cell, where a catalyst splits it into protons and electrons. The electrons travel through an external circuit (producing electricity), while the protons pass through a membrane to the cathode, where they combine with oxygen to form water.
Transport Applications
- Fuel cell electric vehicles (FCEVs): Cars, buses, and trucks that offer longer range and faster refueling than battery-electric alternatives, particularly suited to heavy-duty and long-distance transport.
- Rail and marine: Hydrogen fuel cells are being piloted in trains and ferries where electrification is impractical.
- Material handling: Fuel cell forklifts are already widely used in warehouses and distribution centers.
Challenges
High production costs, limited hydrogen refueling infrastructure, and the carbon intensity of most current hydrogen production (grey hydrogen from natural gas) remain key barriers. Green hydrogen produced via electrolysis powered by renewables is essential for the climate case.
Career Relevance
Hydrogen fuel cells create roles for electrochemical engineers, hydrogen infrastructure planners, fuel cell technicians, and clean transport policy advisors. Automotive manufacturers, energy companies, and transit agencies are actively hiring in this rapidly developing sector.