Work

The Aerocapacitor: An Electrochemical Double‐Layer Energy‐Storage Device

Year: 1993

Type: article

Abstract: We have applied unique types of carbon foams developed at Lawrence Livermore National Laboratory to make an "Aerocapacitor." The aerocapacitor is a high power‐density, high energy‐density, electrochemical double‐layer capacitor which uses carbon aerogels as electrodes. These electrodes possess very high surface area per unit volume and are electrically continuous in both the carbon and electrolyte phase on a 10 nm scale. Aerogel surface areas range from 100 to 700 m 2 /cm 3 (as measured by BET analysis), with bulk densities of 0.3–1.0 g/cm 3 . This morphology permits stored energy to be released rapidly, resulting in high power densities (7.5 kW/kg). Materials parameterization has been performed, and device capacitances of several tens of Farads per gram and per cm 3 of aerogel have been achieved.

Source: Journal of The Electrochemical Society

DOI: 10.1149/1.2221066

Authors: S. T. Mayer, R. W. Pekala, J. L. Kaschmitter

Institution: Lawrence Livermore National Laboratory

Language: English

Topic: Supercapacitor Materials and Fabrication

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: bronze

Funders: U.S. Department of Energy, Lawrence Livermore National Laboratory