There is special batting and it has "silver" in it. Our quilt shop carries it and I have seen similar type at JoAnn's. Insul-bright is one name. It is a MUST to have the correct type or somebody will get burned. You could ask someone at your local shop to help you find it. Like Quilting Turtle said-sometimes they put products is strange places. This type of batting is also great for making ironing board covers.
You can use regular cotton for the outside. But maybe the teflon fabric will stay cleaner longer? I don't know, I have never tried it.