Please use this identifier to cite or link to this item:
Title: Tuning the electronic spin state of catalysts by strain control for highly efficient water electrolysis
Authors: Hsu, Shao-Hui
Hung, Sung-Fu
Wang, Hsin-Yi
Xiao, Fang-Xing
Zhang, Liping
Yang, Hongbin
Chen, Hao Ming
Lee, Jong-Min
Liu, Bin
Keywords: Engineering::Chemical engineering
Issue Date: 2018
Source: Hsu, S.-H., Hung, S.-F., Wang, H.-Y., Xiao, F.-X., Zhang, L., Yang, H., . . . Liu, B. (2018). Tuning the electronic spin state of catalysts by strain control for highly efficient water electrolysis. Small Methods, 2(5), 1800001-. doi:10.1002/smtd.201800001
Journal: Small Methods
Abstract: The electronic configuration is crucial in governing the binding strength of intermediates with catalysts, yet it is still challenging to control the catalysts' surface electronic spin state. Here, it is demonstrated that through surface metal–organic framework transformation followed by acid etching, the electronic spin state of surface Co3+ ions on spinel Co3O4 can be transformed from t2g6 to the high electronic spin state of t2g4eg2 by expanding the surface lattice constant, which significantly enhances the overlap of the eg orbital of cobalt with the oxygen adsorbates, and greatly improves the intermediates adsorption and thus the oxygen evolution reaction activity. The high electronic spin rich Co3O4 electrode exhibits an anodic current density of 10 mA cm−2 at an overpotential of 280 mV. The finding offers a rational design strategy to manipulate the electronic spin state of catalyst and the hybridization of molecular orbitals in water electrolysis.
ISSN: 2366-9608
DOI: 10.1002/smtd.201800001
Rights: © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SCBE Journal Articles

Web of ScienceTM
Citations 5

Updated on Jul 4, 2022

Page view(s)

Updated on Sep 29, 2022

Google ScholarTM




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