"Just mix a little distilled water with the graphene dust."
That won't work, but you can mix a lot of graphene powder in some glycerin and that does work*. And it won't kill your toddler or your cat.
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As I said it works just fine, I've used it for a long long time. I also mix Rislone or 3 in one IF I want it to stay pliable until it settles. That type of joining usually outlast the equipment and stops GREEN crap from growing between the two different pieces.
Sometimes I just dip the raw cable end in the dry dust, insert it into the terminal and hammer weld it with a dye.
As for toddlers and cats, I'll work on that one.. BUT I can honestly say I haven't lost one yet.. The cat was 21 when she moved on to kitty heaven..