Zeolite-templated nanoporous carbon for high-performance supercapacitors

Cited 0 time in webofscience Cited 0 time in scopus
119 Viewed 30 Downloaded
Title
Zeolite-templated nanoporous carbon for high-performance supercapacitors
Author(s)
Hao Lu; Kyoungsoo Kim; Yonghyun Kwon; Xiaoming Sun; Ryong Ryoo; X. S. Zhao
Publication Date
2018-04
Journal
Journal of Materials Chemistry A, v.6, no.22, pp.10388 - 10394
Publisher
ROYAL SOC CHEMISTRY
Abstract
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 °C) displayed excellent electrocapacitive properties. The presence of both micro/mesopores and surface oxygen-containing groups on the ordered porous structure, along with a high specific surface area (2280 m2 g-1) and pore volume (1.95 cm3 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 17000 times and shelved for another two months, the electrode exhibited a specific capacitance of 246 F g-1 at 1 A g-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. © 2018 The Royal Society of Chemistry. © The Royal Society of Chemistry 2018
URI
https://pr.ibs.re.kr/handle/8788114/4597
ISSN
2050-7488
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > Journal Papers (저널논문)
Files in This Item:
J. Mater. Chem. A, 2018, 6, 10388–10394.pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse