Aerogel Composite, Inc. (ACI) announced today that a carbon aerogel ultracapacitor electrode material with unusually large amount of energy storage for its size is available for sale. Aerogels are solid substances similar to gels but where the internal liquid is replaced with air. Ultracapacitors are of particular interest in automotive applications for hybrid vehicles and as supplemental storage for battery electric vehicles. The following statement from their press release defines the performance of the product:
The extremely high electrochemical surface area of ACI's ENERGel(TM) carbon aerogel enables very high rates of charge and discharge. Capacitance's of more than 104 F/g and energy densities of more than 325 kJ/kg have been demonstrated with carbon aerogels ultracapacitors. Additionally, power densities of up to 20 kW/kg have been achieved. This is orders of magnitude higher than what conventional capacitors offer. ACI believes that its ENERGel(TM) carbon aerogel is a superior option for applications such as specialized electrodes.
Reference: Aerogel Composite announces ENERGel(TM) Ultracapacitor, Greenshift press release, Feb. 21, 2005