**1. Introduction**

This chapter describes the generation of polymeric and composite materials, and their pertinent processing sequence for the fabrication of ion permeable membranes utilized in super-capacitors and other bipolar charge storage devices. Energy storage devices are conspicuous and ubiquitous these days. Mostly, because we are utterly dependent on electric energy for so many facets of our life, from the trendy and somewhat common electric or hybrid car, to the more rare, but no less useful pacemaker that keeps the heart pumping periodically for those in need for such device. Electric energy is so useful, because its versatility. Electric energy can be used to activate actuators to generate forces or torque, to sense mechanical, thermal, optical and chemical variables, to generate radiation fields for wireless communica‐ tions, and in many other tasks. The problem with electrical energy is that in contrast with the chemical energy stored in liquid fossil fuels such as gasoline, the amount of energy per unit volume or mass stored in batteries or capacitors is less than a tenth [1, 2] of that of gasoline. This low energy density means that large volumes and masses are required to store reasonable amounts of energy resulting in reduce range for electric vehicles and short intervals between charging for "smart" phones.
