Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/147539
Title: Atomically dispersed cobalt trifunctional electrocatalysts with tailored coordination environment for flexible rechargeable Zn–air battery and self-driven water splitting
Authors: Zhang, Zheye
Zhao, Xiaoxu
Xi, Shibo
Zhang, Lili
Chen, Zhongxin
Zeng, Zhiping
Huang, Ming
Yang, Hongbin
Liu, Bin
Pennycook, Stephen J.
Chen, Peng
Keywords: Science::Chemistry::Physical chemistry::Catalysis
Issue Date: 2020
Source: Zhang, Z., Zhao, X., Xi, S., Zhang, L., Chen, Z., Zeng, Z., Huang, M., Yang, H., Liu, B., Pennycook, S. J. & Chen, P. (2020). Atomically dispersed cobalt trifunctional electrocatalysts with tailored coordination environment for flexible rechargeable Zn–air battery and self-driven water splitting. Advanced Energy Materials, 10(48), 2002896-. https://dx.doi.org/10.1002/aenm.202002896
Project: AMEIRG18-0016
MOE2017-T2-2-005
Journal: Advanced Energy Materials
Abstract: Designing multifunctional catalysts with high activity, stability, and low-cost for energy storage and conversion is a significant challenge. Herein, a trifunctional electrocatalyst is synthesized by anchoring individually dispersed Co atoms on N and S codoped hollow carbon spheres (CoSA/N,S-HCS), which exhibits outstanding catalytic activity and stability for the oxygen reduction reaction, oxygen evolution reaction, and hydrogen evolution reaction. When equipped in liquid or flexible solid-state rechargeable Zn–air batteries, CoSA/N,S-HCS endows them with high power and energy density as well as excellent long-term cycling stability, outperforming benchmark batteries based on a commercial Pt/C + RuO dual catalyst system. Furthermore, a self-driven water splitting system powered by flexible Zn–air batteries is demonstrated using CoSA/N,S-HCS as the sole catalyst, giving a high H2 evolution rate of 184 µmol/h. The state-of-art experimental characterizations and theoretical calculations reveal synergistic cooperation between atomically dispersed Co-N active sites, nearby electron-donating S dopants, and the unique carbon support to single-atom catalysts (SACs). This work demonstrates a general strategy to design various multifunctional SAC systems with a tailored coordination environment.
URI: https://hdl.handle.net/10356/147539
ISSN: 1614-6840
DOI: 10.1002/aenm.202002896
Rights: © 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SCBE Journal Articles

Page view(s)

27
Updated on May 8, 2021

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.