BROWSE

Related Scientist

kim,jonghun's photo.

kim,jonghun
나노물질및화학반응연구단
more info

ITEM VIEW & DOWNLOAD

Intrinsic relationship between enhanced oxygen reduction reaction activity and nanoscale work function of doped carbonsHighly Cited Paper

Cited 203 time in webofscience Cited 212 time in scopus
1,518 Viewed 241 Downloaded
Title
Intrinsic relationship between enhanced oxygen reduction reaction activity and nanoscale work function of doped carbons
Author(s)
Cheon, J.Y.; Jong Hun Kim; Kim, J.H.; Kalyan C. Goddeti; Jeong Young Park; Joo, S.H.
Publication Date
2014-06
Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.136, no.25, pp.8875 - 8878
Publisher
AMER CHEMICAL SOC
Abstract
Nanostructured carbon materials doped with a variety of heteroatoms have shown promising electrocatalytic activity in the oxygen reduction reaction (ORR). However, understanding of the working principles that underpin the superior ORR activity observed with doped nanocarbons is still limited to predictions based on theoretical calculations. Herein, we demonstrate, for the first time, that the enhanced ORR activity in doped nanocarbons can be correlated with the variation in their nanoscale work function. A series of doped ordered mesoporous carbons (OMCs) were prepared using N, S, and O as dopants; the triple-doped, N,S,O-OMC displayed superior ORR activity and four-electron selectivity compared to the dual-doped (N,O-OMC and S,O-OMC) and the monodoped (O-OMC) OMCs. Significantly, the work functions of these heteroatom-doped OMCs, measured by Kelvin probe force microscopy, display a strong correlation with the activity and reaction kinetics for the ORR This unprecedented experimental insight can be used to provide an explanation for the enhanced ORR activity of heteroatom-doped carbon materials.
URI
https://pr.ibs.re.kr/handle/8788114/1511
DOI
10.1021/ja503557x
ISSN
0002-7863
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
Intrinsic relationship between enhanced oxygen reduction reaction activity and nanoscale work function of doped carbons.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