High Performance, Lower Cost Electrochemical Capacitors for the Navy's Deployable, Long-Endurance Acoustic Source Device Application

"Electrochemical Capacitors (EC) with low cost, high performance and low equivalent series resistance (ESR) are needed to develop a wide range of military, space, and industrial applications.The primary objective of this project is to develop a high energy density, high power density, all-solid polymer electrolyte EC stack whose ESR and cost are substantially reduced. Innovative low-cost highly conductive solid electrolyte membrane andelectrode materials will be utilized in order to reduce the cost and the ESR of the EC. The specific innovative concept is the development of a repeating capacitor element, based on the use of a highly conductive metal oxide particulate, unitized with alow-cost, low-resistance, highly conductive thin proton-exchange membrane electrolyte, to provide a high-energy-density, high-power-density EC device. This innovation is based on Giner, Inc.'s extensive knowledge in electrode materials and solid polymerelectrolyte processing. This proposed EC stack, which targets the Navy's application for a deployable, long-endurance acoustic source represent more than a 60% volume and weight reduction compared to the current state of the art ultracapacitor technology.The advantages of the proposed EC design includes long life, small size, high power density, and the extension to be used in many other applications. The EC to be developed during the proposed program may be used in a number of different applications, partic