Energy Efficiency and Transfer

gunguy702

Hello,
First of all this is a fun sidetrack thing. I'm looking for the safest and most efficient molecule that could be split or combined or some way to produce force.Could it be put in a motor-type device and therefore be used as a motor?BTW, this is for like a car.Could Salt Water produce electricity that could be stored in a battery and therefore be in a car?

mfb

I think you have some mechanism in mind which does not work, but your question is a bit vague.

You can produce hydrogen via electrolysis and store it to power a fuel cell afterwards - I think the efficiency electric->electric is something like ~50%. Electric->mechanical is close to 100%, that does not matter much.
Batteries use other chemical components, but not salt water (why salt water?).
Petrol and oxygen can be used in a motor, too - it is impractical to produce petrol from scratch, but it can be made out of (parts of) oil of course.

sophiecentaur

Are you thinking in terms of the mechanism that operates in our muscles?