If you're looking for an safe, easy, clean way to split firewood, electric log splitters are what you need.
As long as you'll be splitting near an electrical outlet, there's no reason to go gas. Electric log splitters can crack through some very large logs.
There's no running out of gas, no oil changes to worry about, and they start and operate with the push of a button. Best of all, since there are no exhaust fumes, you can use them inside your garage, shed, or even in your home (if you don't mind a little mess).