Issue 8, 2013
From the journal:

Nanoscale

Nitrogen doped holey graphene as an efficient metal-free multifunctional electrochemical catalyst for hydrazineoxidation and oxygen reduction†

Dingshan Yu,a   Li Wei,a   Wenchao Jiang,a   Hong Wang,a   Bo Sun,b   Qiang Zhang,c   Kunli Goh,a   Rongmei Sia  and  Yuan Chen*a  

* Corresponding authors

a School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459
E-mail: chenyuan@ntu.edu.sg
Fax: +65-65156046
Tel: +65-63168939

b School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China

c Department of Chemical Engineering, Tsinghua University, Beijing 100084, P. R. China

Abstract

Electrocatalysts for anode or cathode reactions are at the heart of electrochemical energy conversion and storage devices. Molecular design of carbon based nanomaterials may create the next generation electrochemical catalysts for broad applications. Herein, we present the synthesis of a three-dimensional (3D) nanostructure with a large surface area (784 m2 g−1) composed of nitrogen doped (up to 8.6 at.%) holey graphene. The holey structure of graphene sheets (∼25% of surface area is attributed to pores) engenders more exposed catalytic active edge sites. Nitrogen doping further improves catalytic activity, while the formation of the 3D porous nanostructure significantly reduces graphene nanosheet stacking and facilitates the diffusion of reactants/electrolytes. The three factors work together, leading to superb electrochemical catalytic activities for both hydrazine oxidation (its current generation ability is comparable to that of 10 wt% Pt–C catalyst) and oxygen reduction (its limiting current is comparable to that of 20 wt% Pt–C catalyst) with four-electron transfer processes and excellent durability.

Graphical abstract: Nitrogen doped holey graphene as an efficient metal-free multifunctional electrochemical catalyst for hydrazine oxidation and oxygen reduction

About
Cited by
Related
Download options Please wait...

Supplementary files

Article information

DOI
https://doi.org/10.1039/C3NR34267K
Article type
Paper
Submitted
24 Dec 2012
Accepted
15 Feb 2013
First published
19 Feb 2013

Nanoscale, 2013,5, 3457-3464

Permissions

Request permissions

Nitrogen doped holey graphene as an efficient metal-free multifunctional electrochemical catalyst for hydrazine oxidation and oxygen reduction

D. Yu, L. Wei, W. Jiang, H. Wang, B. Sun, Q. Zhang, K. Goh, R. Si and Y. Chen, Nanoscale, 2013, 5, 3457 DOI: 10.1039/C3NR34267K

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