High-performance oxygen reduction catalyst derived from porous, nitrogen-doped carbon nanosheets. (30th August 2016)

• Record Type: Journal Article
• Authors: Wang, Hao; Chen, Kai; Cao, Yingjie; Zhu, Juntong; Jiang, Yining; Feng, Lai; Dai, Xiao; Zou, Guifu
• Is Part Of: Nanotechnology. Volume 27:Number 40(2016)
• Publication Date: 2016-08-30
• Subjects: ORR -- electrocatalyst -- carbon nanosheets -- nitrogen-doped; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/0957-4484/27/40/405401
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: A facile, self-foaming strategy is reported to synthesize porous, nitrogen-doped carbon nanosheets (N-CNSs) as a metal-free electrocatalyst for oxygen reduction reaction (ORR). Benefiting from the synergistic functions of N-induced active sites, a highly specific surface area and continuous structure, the optimal N-CNS catalyst exhibits Pt-like ORR activity (positive onset potential of ∼0 V versus Ag/AgCl and limiting current density of 5 mA cm −2 ) through a four-electron transfer process in alkaline media with excellent cycle stability and methanol tolerance. This work not only provides a promising metal-free ORR catalyst but also opens up a new path for designing carbon-based materials towards broad applications.