| − | Batteries are generally composed of two electrodes (the anode and cathode), electrolyte, and a semi-permeable barrier. Traditionally, these batteries are pictured as a pair of discrete electrodes in a bath of acid. However, battery cells are almost always designed with the electrodes as a thin, flexible sheets. They are then rolled together with a separator in between, and then submerged in a comparatively small about of electrolyte. | + | Batteries are generally composed of two electrodes (the anode and cathode), electrolyte, and a semi-permeable barrier. Traditionally, these batteries are pictured as a pair of discrete electrodes in a bath of acid. However, battery cells are almost always designed with the electrodes as thin, flexible sheets. They are then rolled together with a separator in between, and then submerged in a comparatively small about of electrolyte. |