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Compressed porous graphene particles for use as supercapacitor electrodes with excellent volumetric performance
- Source :
- Nanoscale. 7:18459-18463
- Publication Year :
- 2015
- Publisher :
- Royal Society of Chemistry (RSC), 2015.
-
Abstract
- This work presents a new class of porous graphene particles with a three-dimensional microscale network and an ultrahigh specific surface area (2590 m(2) g(-1)), which is obtained by the KOH activation of a compact graphene hydrogel. As supercapacitor electrodes, such porous graphene particles show high compressibility and little capacitance loss when subjected to a compressive force up to 40 MPa, yielding an excellent volumetric performance with an ionic liquid electrolyte. Such carbon materials show great promise for applications needing high volumetric energy.
Details
- ISSN :
- 20403372 and 20403364
- Volume :
- 7
- Database :
- OpenAIRE
- Journal :
- Nanoscale
- Accession number :
- edsair.doi.dedup.....b9db8678f51a6b174d049a0e4a15e4a6