Fuel Cell Fundamentals «Direct · 2025»

Hydrogen fuel is supplied to the anode, where a catalyst (typically platinum) splits the hydrogen molecules into protons ( H+cap H raised to the positive power ) and electrons ( e−e raised to the negative power

This layer allows positively charged protons to migrate through it to the cathode while acting as an insulator for electrons. Fuel Cell Fundamentals

At the cathode, the electrons rejoin the protons and combine with oxygen (usually from the air) to produce the cell's only byproducts: water and heat . Major Fuel Cell Types Hydrogen fuel is supplied to the anode, where

Because the electrons cannot pass through the membrane, they are forced through an external circuit, which creates the electric current used to power a load. Fuel Cell Fundamentals