Composition for an organic gel and the pyrolysate thereof, production method thereof, electrode formed by the pyrolysate and supercapacitor containing same
US10526505B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2013 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Apr 7, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/13
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A non-crosslinked, gelled carbonaceous composition and a pyrolyzed composition respectively forming an aqueous polymer gel and the pyrolysate thereof in the form of porous carbon is provided. Also provided is a production method thereof, to a porous carbon electrode formed by the pyrolyzed composition, and to a supercapacitor containing the electrodes. The gelled, non-crosslinked composition (G2) is based on a resin created at least partly from polyhydroxybenzene(s) R and formaldehyde(s) F and comprises at least one hydrosoluble cationic polyelectrolyte P. The composition forms a rheofluidifying physical gel. A pyrolyzed carbonaceous composition having a carbon monolith, is the product of coating, crosslinking, drying then pyrolysis of the non-crosslinked gelled composition, the carbon monolith being predominantly microporous and able to form a supercapacitor electrode having a thickness of less than 1 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.