What Planar has come up with is a ceramic electrolyte which it says works as well as a gel. It can print this electrolyte (along with the battery’s electrodes) onto a sheet of metal or plastic that passes from one reel to another in a process similar to that used in a traditional printing press. Nor does it have to be done in a vacuum. Once printed, the reels can be cut up into individual cells and wired together to make battery packs.
