Zeolite-templated nanoporous carbon for high-performance supercapacitors

Cited 10 time in webofscience Cited 0 time in scopus
  • Hit : 130
  • Download : 0
Hierarchical porous carbon prepared with calcium-containing nanocrystalline beta zeolite as the template and ethylene as the carbon source at a relatively low carbonization temperature (600 degrees C) displayed excellent electrocapacitive properties. The presence of both micro/mesopores and surface oxygencontaining groups on the ordered porous structure, along with a high specific surface area (2280 m(2) g(-1)) and pore volume (1.95 cm(3) g(-1) ) coupled with good wettability towards the electrolyte enabled the carbon to perform well as a supercapacitor electrode. This carbon electrode achieved a specific capacitance of 250 F g(-1) at a current density of 1 A g(-1) with 1 M H2SO4 as the aqueous electrolyte measured in a three-electrode system. A symmetric capacitor fabricated with the carbon as both electrodes exhibited a specific capacitance of 161 F g(-1 )at a current density of 1 A g(-1), and an excellent cycling stability. After being cycled 17 000 times and shelved for another two months, the electrode exhibited a specific capacitance of 246 F g(-1) at 1 Ag-1, 153% of the initial capacitance, and still maintained an excellent cycle stability. Besides, an all-solid-state supercapacitor cell fabricated with this carbon as both electrodes and polyvinyl alcohol/H2SO4 gel as the electrolyte displayed an areal specific capacitance of 413 mF cm(-2) at a current density of 0.25 mA cm(-2).
Publisher
ROYAL SOC CHEMISTRY
Issue Date
2018-06
Language
English
Article Type
Article
Keywords

ELECTROCHEMICAL ENERGY-STORAGE; HIERARCHICAL POROUS CARBON; ELECTROCAPACITIVE PROPERTIES; MESOPOROUS CARBON; GRAPHENE; CAPACITANCE; ELECTRODES; CARBONIZATION; COMPOSITES; NANOSHEETS

Citation

JOURNAL OF MATERIALS CHEMISTRY A, v.6, no.22, pp.10388 - 10394

ISSN
2050-7488
DOI
10.1039/c8ta00850g
URI
http://hdl.handle.net/10203/244550
Appears in Collection
CH-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 10 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0