Mini space thruster that runs on water
I’d love to see that in action 
Being able to electrolyse water on-the-spot seems interesting, its energy inefficient but serves a similar role to ion thrusters I guess
It might actually be more efficient than keeping cyrogenic hydrogen cooled if the mission takes multiple decades and you don't need the fuel most of the time - for example in a Pluto orbiter
Yeah, cooling needs energy, could be very useful for very small satellites
Well, this sent me down the rabbit hole for over an hour.
That's a neat idea
This is cool as hell. But I feel like having a supply of potable water in space is kinda difficult?