Authors:	Zhao, Yupeng Gao, Dandan Liu, Si Biskupek, Johannes Kaiser, Ute Liu, Rongji Streb, Carsten
Title:	POM@ZIF derived mixed metal oxide catalysts for sustained electrocatalytic oxygen evolution
Online publication date:	4-Mar-2024
Year of first publication:	2022
Language:	english
Abstract:	The design of efficient and stable oxygen evolution reaction (OER) catalysts based on noble-metal-free materials is crucial for energy conversion and storage. In this work, it was demonstrated how polyoxometalate (POM)-doped ZIF-67 can be converted into a stable oxygen evolution electrocatalyst by chemical etching, cation exchange, and thermal annealing steps. Characterization by X-ray photoelectron spectroscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy and Raman spectroscopy indicate that POM-doped ZIF-67 derived carbon-supported metal oxides were synthesized. The resulting composite shows structural and compositional advantages which lead to low overpotential (306 mV at j=10 mA ⋅ cm−2) and long-term stability under harsh OER conditions (1.0 M aqueous KOH).
DDC:	540 Chemie 540 Chemistry and allied sciences
Institution:	Johannes Gutenberg-Universität Mainz
Department:	FB 09 Chemie, Pharmazie u. Geowissensch.
Place:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-10149
Version:	Published version
Publication type:	Zeitschriftenaufsatz
Document type specification:	Scientific article
License:	CC BY-NC
Information on rights of use:	https://creativecommons.org/licenses/by-nc/4.0/
Journal:	Chemistry - a European journal 29 13
Pages or article number:	e202203220
Publisher:	Wiley
Publisher place:	Weinheim
Issue date:	2022
ISSN:	1521-3765
Publisher DOI:	10.1002/chem.202203220
Appears in collections:	DFG-491381577-H