Patent · US Active

Electrochemical capacitor, carbonized biopolymers and carbonization process

US7947246B2 · kind B2 · utility

1Cited by

8References

16Claims

0Family size

Assignees

SGL CARBON SE · DE
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE · FR
L'Universite d'Orleans

Inventors

Martin Cadek · Augsburg, DE
Francois Beguin · Olivet, FR
Encarnacion Raymundo-Pinero · Orléans, FR

Key dates

Filing date	Aug 1, 2008
Grant date	May 24, 2011
Priority date	—
Expiry date	Apr 10, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/13
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A carbon material suitable for the preparation of electrodes for electrochemical capacitors is obtained by single-stage carbonization of biopolymers with a large content of heteroatoms. Neither addition of an activating agent during carbonization nor subsequent gas phase activation is necessary. Several biopolymers which are available by extraction from seaweed are suitable precursors. Alternatively, the seaweed containing such biopolymers is carbonized directly.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.