Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/70972
PIRA download icon_1.1View/Download Full Text
Title: Layered spongy-like O-doped g-C3N4 : an efficient non-metal oxygen reduction catalyst for alkaline fuel cells
Authors: Mei, R
Ma, L
An, LA 
Wang, F
Xi, J
Sun, H
Luo, Z
Wu, Q
Issue Date: Jan-2017
Source: Journal of the Electrochemical Society, Jan. 2017, v. 164, no. 4, p. F354-F363
Abstract: Here we report a polycondensation reaction combined with a solution mixing pathway to synthesize an O-doped graphitic carbon nitride (g-C3N4) by using melamine and cyanuric acid. Structural and morphological characterizations revealed the successful preparation of O-doped g-C3N4 with a layered spongy-like micro-nanostructure, which favored the enhancement of O-2 adsorption and active sites. The UV-vis spectra and Mott-Schottky analysis indicated that the introduction of oxygen leaded to a narrow bandgap, a negative shift of valance band maximum and an increased electrical conductivity. As a result, the O-doped g-C3N4 exhibited a higher mass activity (14.9 mA/mg(catalyst) at -0.60 V and 1800 rpm) and 60 mV positive shift of half-wave potential toward oxygen reduction reaction (ORR) as well as a better electron transfer efficiency than did the g-C3N4 without oxygen doping. In order to further increase the ORR activity, Ketjen black carbon was incorporated into the O-doped g-C3N4 catalyst to promote the electron transfer. The resulting catalyst showed a comparable ORR activity (a kinetic-limiting current density of 21.5 mA cm(-2) at -0.6 V), excellent stability and remarkable tolerance to methanol as compared with the Pt/C catalyst, indicating its potential application as a non-metal cathode catalyst for the alkaline direct methanol fuel cell.
Publisher: Electrochemical Society
Journal: Journal of the Electrochemical Society 
ISSN: 0013-4651
EISSN: 1945-7111
DOI: 10.1149/2.1191704jes
Rights: © 2017 The Electrochemical Society. All rights reserved.
This manuscript version is made available under the CC-BY-NC-ND 4.0 license (https://creativecommons.org/licenses/by-nc-nd/4.0/)
The following publication Mei, R., Ma, L., An, L., Wang, F., Xi, J., Sun, H., ... & Wu, Q. (2017). Layered spongy-like O-doped g-C3N4: an efficient non-metal oxygen reduction catalyst for alkaline fuel cells. Journal of The Electrochemical Society, 164(4), F354 is available at https://doi.org/10.1149/2.1191704jes
Appears in Collections:Journal/Magazine Article

Files in This Item:
File Description SizeFormat 
An_Layered_Spongy-Like_O-Doped.pdfPre-Published version1.31 MBAdobe PDFView/Open
Open Access Information
Status open access
File Version Final Accepted Manuscript
Access
View full-text via PolyU eLinks SFX Query
Show full item record

Page views

33
Last Week
4
Last month
Citations as of Jun 26, 2022

Downloads

10
Citations as of Jun 26, 2022

SCOPUSTM   
Citations

25
Citations as of Jun 30, 2022

WEB OF SCIENCETM
Citations

24
Last Week
0
Last month
Citations as of Jun 30, 2022

Google ScholarTM

Check

Altmetric


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