Please use this identifier to cite or link to this item:
Title: Multi-scaled porous Fe-N/C nanofibrous catalysts for the cathode electrodes of direct methanol fuel cells
Authors: Me, R
Xi, J
Ma, L
An, L 
Wang, F
Sun, H
Luo, Z
Wu, Q
Issue Date: 2017
Publisher: Electrochemical Society
Source: Journal of the Electrochemical Society, 2017, v. 164, no. 14, p. F1556-F1565 How to cite?
Journal: Journal of the Electrochemical Society 
Abstract: In the present work, a nanofibrous Fe-N/C catalyst with a multi-scaled porous structure is proposed and prepared via electrospinning a polyacrylonitrile (PAN) solution containing Fe3+ incorporated graphitic carbon nitride (Fe-g-C3N4). Physical and chemical characterizations confirm that micropores, mesopores and hollow-out macropores are co-existed in the Fe-N/C nanofibrous catalysts. The abundant micropores are beneficial for accommodating active sites, while the mesopores and hollow-out macropores can facilitate the supply of oxygen to the active surfaces. Moreover, due to the fibrous morphology of the catalyst, a 3D highly-porous electrode with well-established networks can be formed for facile transport of electrons and oxygen. The experimental results show that the Fe-N/C catalyst delivers a good activity toward oxygen reduction reaction (ORR) in acid media with a half-wave potential of 740 mV and an almost four-electron transfer process, high stability and excellent methanol tolerance. Furthermore, the as-prepared catalyst is used to fabricate the cathode of a direct methanol fuel cell, which yields a peak power density of 14.9 mW cm-2 with 1 M methanol solutions, dry air and an operating temperature of 70°C.
ISSN: 0013-4651
EISSN: 1945-7111
DOI: 10.1149/2.0451714jes
Appears in Collections:Journal/Magazine Article

View full-text via PolyU eLinks SFX Query
Show full item record

Page view(s)

Citations as of Sep 18, 2018

Google ScholarTM



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