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

Scheduled maintenance work on Wednesday 22nd May 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.



Room-Temperature Interfacial Approach Towards Iron/Nitrogen co-Doped Fibrous Porous Carbons as Electrocatalysts for Oxygen Reduction Reaction and Zn-Air Batteries

Abstract

Development of nonprecious and efficient catalysts to boost oxygen reduction reaction (ORR) is the key to realize various sustainable storage devices with high energy capacity, such as fuel cells and metal-air batteries. However, the majority of previous reported approaches suffered from complicated fabrication procedure, time consuming and difficult to scale up. Herein, large-scale iron ion embedded polyaniline fibers were successfully fabricated as precursors for preparing iron/nitrogen co-doped fibrous porous carbons (Fe/NPCFs) through an interfacial engineering strategy at room temperature. As ORR electrocatalysts in alkaline medium (0.1 M KOH), Fe/NPCFs display a positive half-wave potential of 0.827 V (vs RHE), and high limited current density (up to 5.76 mA cm−2), which are better than those of commercial Pt/C (E1/2=0.815 V, JL=5.47 mA cm−2). Also, Fe/NPCFs exhibit the high ORR catalysis activity (E1/2=0.632 V, JL=5.07 mA cm−2) in acidic medium (0.5 M H2SO4). When used as air cathode in a primary Zn-air battery, high power density (158.5 mW cm−2) and specific capacity (717.8 mAh g−1) can be easily achieved, outperforming the commercial Pt/C.

  • This article is part of the themed collection: Nanocarbons
Back to tab navigation

Supplementary files

Publication details

The article was received on 22 Feb 2019, accepted on 28 Apr 2019 and first published on 29 Apr 2019


Article type: Paper
DOI: 10.1039/C9NR01639B
Nanoscale, 2019, Accepted Manuscript

  •   Request permissions

    Room-Temperature Interfacial Approach Towards Iron/Nitrogen co-Doped Fibrous Porous Carbons as Electrocatalysts for Oxygen Reduction Reaction and Zn-Air Batteries

    C. Lu, J. Zhang, Z. Chen, K. Jiang, M. Li, F. Zhang, G. Tong, X. Zou, Y. Su and X. Zhuang, Nanoscale, 2019, Accepted Manuscript , DOI: 10.1039/C9NR01639B

Search articles by author

Spotlight

Advertisements