Polyaniline nanosheet derived B/N co-doped carbon nanosheets as efficient metal-free catalysts for oxygen reduction reaction

Zhang Y, Zhuang X, Su Y, Zhang F, Feng X (2014)

Publication Type: Journal article

Publication year: 2014

Journal

Journal of Materials Chemistry A Royal Society of Chemistry

Book Volume: 2

Pages Range: 7742-7746

Journal Issue: 21

DOI: 10.1039/c4ta00814f

Abstract

A novel B/N co-doped porous carbon nanosheet with a high heteroatom doping content has been successfully prepared. Using amino-functionalized graphene oxide (GO) as the template, oxidation polymerization of aniline, 3-aminophenylboronic acid, and m-phenylenediamine generates GO-based polyaniline nanosheets functionalized with boronic acid (GO-CBP). After high-temperature treatment, graphene-based B/N co-doped carbon nanosheets (G-CBP) are obtained, which show a typical 2D morphology with a thickness of ∼20 nm. After CO 2 activation at 1000 °C, the obtained porous carbon nanosheets (G-CBP-a) have a thickness of ∼17 nm and a high specific surface area of 363 m² g^-1. Benefiting from its high surface area, unique 2D sheet nanostructure, and high heteroatom-doping contents (5.4% B and 5.3% N), G-CBP-a exhibits excellent electrochemical performance for the oxygen reduction reaction under alkaline conditions (0.1 M KOH), with a low half-wave potential (-0.27 V for G-CBP-a versus -0.18 V for Pt/C), a dominant four-electron transfer mechanism (n = 3.78 at -0.45 V), and excellent methanol tolerance and durability (10% current decrease after 20000 s operation), as well as a high diffusion-limiting current density (JL = -4.5 mA cm^-2). This journal is © the Partner Organisations 2014.

Involved external institutions

Shanghai Jiao Tong University / 上海交通大学

China (CN)

How to cite

APA:

Zhang, Y., Zhuang, X., Su, Y., Zhang, F., & Feng, X. (2014). Polyaniline nanosheet derived B/N co-doped carbon nanosheets as efficient metal-free catalysts for oxygen reduction reaction. Journal of Materials Chemistry A, 2(21), 7742-7746. https://doi.org/10.1039/c4ta00814f

MLA:

Zhang, Yi, et al. "Polyaniline nanosheet derived B/N co-doped carbon nanosheets as efficient metal-free catalysts for oxygen reduction reaction." Journal of Materials Chemistry A 2.21 (2014): 7742-7746.

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