5 ms·
The biggest obstacle to using li-ion for stationary storage is not density. It doesn't really matter if the batteries weigh a ton if you're never going to move
by NickM 12y ago
The biggest obstacle to using li-ion for stationary storage is not density. It doesn't really matter if the batteries weigh a ton if you're never going to move them. And hydrogen is roughly on par with batteries in terms of energy/volume.
Cost and efficiency are much bigger factors. Batteries completely destroy hydrogen in both of these measures.
- MiguelHudnandez 12y agoI think the downside for hydrogen storage is the inefficiency of electrolysis. Last time I looked at it, you lose about 50% of the energy when making hydrogen. The plus side is that the fuel cell side is very efficient. It'd be practical to have hydrogen split from water at a large scale at solar farms or at existing power plants, and delivered to homes as backup power. (like propane?)
- JoeAltmaier 12y agoThe energy density of hydrogen might be very small? So inefficient to store and move around.