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Photosensitive carbon supercapacitor: cavitated nanoporous carbon from iodine doped β–cyclodextryn
- Source :
- Physica E: Low-dimensional Systems and Nanostructures. 108:164-168
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- We have discovered a huge enhancement of the supercapacity (up to 4 times) under sun illumination of electrodes fabricated from cavitated nanoporous carbon being carbonized from an iodine doped β–cyclodexryn. This effect was achieved even without a frequently used KOH treatment and is caused by enhancement of effective activated surfaces. The synthesized cavitated nanoporous carbon exhibits principally different accumulative features at the carbon/electrolyte interface. Relationship between the porous structure, electronic properties of supramolecular nanoporous carbon and enhanced supercapacitance is explored. The impedance spectroscopy measurements (Nyquist diagram) apparently suggest a capacitance mechanism for the energy accumulation. Enhancement of the supercapacity is explained by light-generated carriers in low-dimensional nano-interfaces in relevant mechanism an increasing concentration of delocalized electrons resulting in unlocking of the Helmholtz layer capacity.
- Subjects :
- Supercapacitor
Materials science
Carbonization
technology, industry, and agriculture
chemistry.chemical_element
Electrolyte
Condensed Matter Physics
Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials
Dielectric spectroscopy
Delocalized electron
chemistry
Chemical engineering
Electrode
Nyquist plot
Carbon
Subjects
Details
- ISSN :
- 13869477
- Volume :
- 108
- Database :
- OpenAIRE
- Journal :
- Physica E: Low-dimensional Systems and Nanostructures
- Accession number :
- edsair.doi...........861701aaa50111433c0a017b596889d7