BROWSE

Related Scientist

Woo Suk, Choi's photo.

Woo Suk, Choi
나노물질 및 화학반응 연구단
more info

ITEM VIEW & DOWNLOAD

Doping effect of zeolite-templated carbon on electrical conductance and supercapacitance properties

Cited 0 time in webofscience Cited 0 time in scopus
91 Viewed 0 Downloaded
Title
Doping effect of zeolite-templated carbon on electrical conductance and supercapacitance properties
Author(s)
Woosuk Choi; Raj Kumar Bera; Seung Won Han; Hongjun Park; Tae Won Go; Minkee Choi; Ryong Ryoo; Jeong Young Park
Publication Date
2022-06
Journal
Carbon, v.193, pp.42 - 50
Publisher
Elsevier Ltd
Abstract
© 2022 Elsevier LtdThe atomic doping of microporous carbon can give rise to variations in material properties and has been used to enhance electrochemical and charge storage properties. Here, we have investigated the effect of doping of nitrogen (N) and sulfur (S) on zeolite-templated carbon (ZTC). N-doped zeolite-templated carbon (N-ZTC) with various structures, including pyridinic N, pyrrolic N, and graphitic N, has a different composition ratio depending on the temperature at which it was synthesized. The composition, electrical conductance, and work functions of doped ZTC were investigated with X-ray photoelectron spectroscopy (XPS), conductive atomic force microscopy (C-AFM), and Kelvin probe force microscopy (KPFM), respectively. We found that N-doped ZTC synthesized at the highest temperature (700 °C) showed the highest graphitic N ratio and electrical conductance, indicating an optimized n-type doping effect. On the other hand, N-ZTC synthesized at the lowest temperature (500 °C) showed a high ratio of pyridinic N and pyrrolic N and low electrical conductance. These doped ZTCs were tested as supercapacitor electrode materials and exhibited low ohmic drop and high capacitance, with an increase in the conductance of the doped ZTCs samples. The structure of graphitic N showed an n-type doping effect in ZTC, whereas pyridinic N showed a weak n-type doping effect. This phenomenon was explained by measuring the work function of KPFM. The results suggest a direct relationship between electrical conductance and carbon-dopant bonding in doped microporous structures, suggesting the possibility of tuning material properties with atomic doping.
URI
https://pr.ibs.re.kr/handle/8788114/11353
DOI
10.1016/j.carbon.2022.02.056
ISSN
0008-6223
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
There are no files associated with this item.

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