Here's how it works:

* Electrolysis: Electrolyzers use an electric current to drive a chemical reaction, specifically the decomposition of a substance (like water) into its constituent elements.

* Chemical Energy Storage: The products of this decomposition (e.g., hydrogen and oxygen from water) store chemical energy that can be released later through a combustion or fuel cell process.

Examples:

* Water Electrolysis: This is the most common type, where electricity splits water molecules into hydrogen and oxygen gases.

* Carbon Dioxide Electrolysis: This process can be used to convert carbon dioxide into valuable products like fuels or chemicals.

Electrolyzers are becoming increasingly important for energy storage and renewable energy technologies as they offer a way to store energy from sources like solar and wind power in a chemical form.