Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 27th March 2019 from 11:00 AM to 1:00 PM (GMT).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 39, 2018
Previous Article Next Article

Isostatic pressure-assisted nanocasting preparation of zeolite templated carbon for high-performance and ultrahigh rate capability supercapacitors

Author affiliations

Abstract

Increasing charge storage and fast charging capability has been a long-standing challenge for supercapacitors. In this study, a novel, facile high isostatic pressing-assisted nanocasting method was developed to produce zeolite templated carbon (ZTC) with excellent supercapacitance performances. There is a strong positive correlation between the isostatic pressure imposed on the carbon source and the surface area, nitrogen doping and electrochemical properties of the ZTC material. Consequently, the ZTC-P300 (300 MPa pressure denoted as P300, which is the maximum operation pressure) electrode with a narrowly distributed interconnected micropore channel system shows the best supercapacitor performance, i.e. remarkable specific capacitance of 253 F g−1 (areal capacitance: 759 mF cm−2) at a current density of 1.25 A g−1 in 6 M KOH electrolyte, high charging capability of 163.5 F g−1 at an ultrahigh current density of 62.5 A g−1, excellent cycling stability with only 5% loss in capacitance after 10 000 cycles (at 5 A g−1), and relatively high energy density of 7.5 W h kg−1 at a power density of 625 W kg−1. Its outstanding capacitive performance is attributed to its high large surface area (2169 m2 g−1), proper pore size (average pore size of 1.2 nm), and high content of doped nitrogen (6.27%). Significantly, the electrochemical analyses show that the ZTC porous structure containing optimum micropores allows efficient ion diffusion and charge transfer, resulting in an excellent energy storage performance and rate capability.

Graphical abstract: Isostatic pressure-assisted nanocasting preparation of zeolite templated carbon for high-performance and ultrahigh rate capability supercapacitors

Back to tab navigation

Supplementary files

Publication details

The article was received on 15 Jun 2018, accepted on 13 Aug 2018 and first published on 14 Aug 2018


Article type: Paper
DOI: 10.1039/C8TA05726E
Citation: J. Mater. Chem. A, 2018,6, 18938-18947

  •   Request permissions

    Isostatic pressure-assisted nanocasting preparation of zeolite templated carbon for high-performance and ultrahigh rate capability supercapacitors

    C. Teng, Y. Han, G. Fu, J. Hu, H. Zheng, X. Lu and J. Jiang, J. Mater. Chem. A, 2018, 6, 18938
    DOI: 10.1039/C8TA05726E

Search articles by author

Spotlight

Advertisements