What is a hydrogen fuel cell?

摘要

Consisting of a single electron orbiting a single proton, hydrogen is the simplest element in the universe - but this simple element can release almost three-times more energy than natural gas. The fact that hydrogen fuel comes with zero carbon emissions (its only by-product is water and heat), has made it the focus of clean energy pioneers everywhere. Until recently, hydrogen fuel cell technology was considered to be a future energy source, and it seemed as though it would remain slightly beyond our reach. But the future is here and fuel cells are now being adapted for a wide range of power needs - everything from powering the grid to providing us with wireless energy for mobiles and laptops.