Porous Power Technologies to Present Clean Battery Technology

April 25, 2007 by Jeff Shepard

Porous Power Technologies (PPT) is presenting its patent pending clean battery technology as it seeks to draw interest from investors. PPT’s ultraporous polymer membrane is used as a separator between battery and ultracapacitor electrodes, keeping them from shorting while enabling significantly faster charging, better high-rate capacity, and longer cycle life than competing products, according to the company.

PPT’s combination of high porosity (80%), small uniform pore size (<1 micron), and strength in a thin membrane is well-suited for use in lithium-ion batteries. The benefits of the company’s patent-pending products are claimed to be unique – the process used to produce leading commercial separators is inherently limited to <50% porosity, and those with higher porosities are generally too thick and/or too expensive for use in lithium batteries. PPT separators offer similar performance improvements in ultracapacitors, and separators for other battery chemistries have been produced as well.