Journal
NANOSCALE
Volume 7, Issue 44, Pages 18459-18463Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5nr06113j
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Funding
- National Basic Research Program of China [2014CB932400]
- National Natural Science Foundation of China [U1401243, 51372167]
- Shenzhen Basic Research Project [ZDSYS-20140509172959981]
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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.
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