High Energy Density Ultracapacitor

Navy systems often require energy storage that provides both high peak power and high energy density in support of naval operations. These two requirements are often difficult to achieve within the same battery technology. The objective of this topic is to develop an innovative rechargeable ultracapacitor energy storage cell capable of achieving 2x or greater the energy density with same or greater power output as current state-of-the-art battery cells. Our approach as already demonstrated 46 Wh/L operated at 350V with a program goal of >90 Wh/L in Phase I (700 Wh/L in Phase II). Our approach does not involve use of organic dielectrics used in electrolytic ultracapacitors or polymer-based ultracapacitors that squeeze the temperature range. Our approach includes an alternative sintering process to produce a solid state ultracapacitor with giant permittivity and acceptable dielectric loss to overcome the limitations of both the electrochemical batteries presently in use and of currently available electrochemical ultracapacitors.