Hydrogen fuel cells promise better energy storage than regular lithium ion batteries.
This has all sorts of potential military applications. Soldiers can’t always recharge on the battlefield. Night vision goggles, radios, and laptops for controlling drone strikes are just some examples.
Hydrogen fuel cells also promise to be lighter than lithium ion batteries. Lighter loads are also obviously advantageous.
The US Army Research Laboratory are now funding research at Cornell University with the goal of producing smaller, lighter, portable hydrogen fuel cells.