Issue 21, 2019

A room-temperature interfacial approach towards iron/nitrogen co-doped fibrous porous carbons as electrocatalysts for the oxygen reduction reaction and Zn–Air batteries

Abstract

The development of nonprecious and efficient catalysts to boost the oxygen reduction reaction (ORR) is imperative. However, the majority of previously reported approaches suffered from a complicated fabrication procedure, both 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 an 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 a 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 an air cathode in a primary Zn–air battery, high power density (158.5 mW cm−2) and specific capacity (717.8 mA h g−1) can be easily achieved, outperforming the commercial Pt/C.

Graphical abstract: A room-temperature interfacial approach towards iron/nitrogen co-doped fibrous porous carbons as electrocatalysts for the oxygen reduction reaction and Zn–Air batteries

  • This article is part of the themed collection: Nanocarbons

Supplementary files

Article information

Article type
Paper
Submitted
22 фев 2019
Accepted
28 апр 2019
First published
29 апр 2019

Nanoscale, 2019,11, 10257-10265

A room-temperature interfacial approach towards iron/nitrogen co-doped fibrous porous carbons as electrocatalysts for the 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, 11, 10257 DOI: 10.1039/C9NR01639B

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements