Can I make cake batter today, refrigerate it overnight, and bake it off tomorrow?

i say dont do it too but me i dont listen so i did it

Definitely don't do that - no matter what your leavening agent (baking powder, baking soda, creamed butter, egg foam or some combination thereof) you need it to go into the oven quickly after mixing the batter.

You can mix dry ingredients together (less the sugar), pre-measure the rest, and that might save you 15 minutes the next day.

I'd say no. Baking Soda or Powder in the recipe would give up it's all sitting overnight and lose it's ability to rise the cake.