A large-scale synthesis of heteroatom (N and S) co-doped hierarchically porous carbon (HPC) derived from polyquaternium for superior oxygen reduction reactivity

From National Research Council Canada

Download	View accepted manuscript: A large-scale synthesis of heteroatom (N and S) co-doped hierarchically porous carbon (HPC) derived from polyquaternium for superior oxygen reduction reactivity (PDF, 1 MB)
DOI	Resolve DOI: https://doi.org/10.1039/C5GC02625C
Author	Search for: Wu, Mingjie; Search for: Qiao, Jinli; Search for: Li, Kaixi; Search for: Zhou, Xuejun; Search for: Liu, Yuyu; Search for: Zhang, Jiujun¹
Name affiliation	National Research Council Canada. Energy, Mining and Environment
Format	Text
Type	Article
Journal title	Green Chemistry
ISSN	1463-9262 1463-9270
Abstract	A simple, large-scale and green synthetic route is demonstrated for the preparation of polyquaternium derived heteroatom (N and S) co-doped hierarchically porous carbon (HPC). Our protocol allows for the simultaneous optimization of both porous structures and surface functionalities of (N and S) co-doped carbon (N-S-HPC). As a result, the obtained N-S-HPC shows a superior catalytic ORR performance to the commercial Pt/C catalyst in alkaline media, including high catalytic activity, remarkable long-term stability and strong methanol tolerance. Even in acidic media where most non-precious metal catalysts are suffered from high overpotential and low durability, our N-S-HPC exhibits an amazing ORR activity with a half-wave potential of 0.73V, and 40% enhanced limited diffusion-current density when compared to Pt/C catalyst. Particularly, when used for constructing a zinc–air battery cathode, such an N-S-HPC catalyst can give a discharge peak power density as high as 536 mW cm-2. At 1.0 V of cell voltage, a current density of 317 mA cm-2 is achieved. This performance is superior to all reported non-precious metal catalysts in literature for zinc–air batteries and significantly outperforms the state-of-the-art platinum-based catalyst.
Publication date	2016-01-05
Terms of use	Permission is granted to temporarily download one copy of the materials for personal, noncommercial transitory viewing only. NRC Publications Archive - Copyright and terms of use
Language	English
Peer reviewed	Yes
NPARC number	21277205
Export citation	Export as RIS
Report a correction	Report a correction
Record identifier	2a1d558d-44be-4210-9f39-7764de54d93c
Record created	2016-01-08
Record modified	2019-03-06

Date modified:: 2019-03-26

Report a problem on this page