whoaaaaa hold on, baking soda is sodium bicarb. that stuff fizzes in acid, plus the standard battery is alkaline; it either contains potassium hydroxide or manganese dioxide. i think it would be much simpler and easier to wear gloves, and clean the mess with a wet cloth.
just because batteries exploding isnt an everyday thing, it doesn't mean you have to treat it like the end of the world. the chemicals would probably cause rashes or whatever, not burns, so try to avoid contact, however if you do make contact, calm down, wash your hands and youll live another day.
BUT if you exploded a nicad, which i know you didnt, then its best to not touch it at all. cadmium is a heavy metal, like lead (ie in solder - makes you think, huh), and mercury. trust me i would know (my name). if you do touch it, wash it off immediately. its not going to kill you just yet, and better start making children as early as you can. the longer you delay it, the harder it gets, lol (dont worry its not that serious)