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Title: Tuning the electronic structures of multimetal oxide nanoplates to realize favorable adsorption energies of oxygenated intermediates
Authors: Huang, Wenjing
Zhang, Junming
Liu, Daobin
Xu, Wenjie
Wang, Yu
Yao, Jiandong
Tan, Hui Teng
Dinh, Khang Ngoc
Wu, Chen
Kuang, Min
Fang, Wei
Dangol, Raksha
Song, Li
Zhou, Kun
Liu, Chuntai
Xu, Jian Wei
Liu, Bin
Yan, Qingyu
Keywords: Engineering::Materials
Issue Date: 2020
Source: Huang, W., Zhang, J., Liu, D., Xu, W., Wang, Y., Yao, J., Tan, H. T., Dinh, K. N., Wu, C., Kuang, M., Fang, W., Dangol, R., Song, L., Zhou, K., Liu, C., Xu, J. W., Liu, B. & Yan, Q. (2020). Tuning the electronic structures of multimetal oxide nanoplates to realize favorable adsorption energies of oxygenated intermediates. ACS Nano, 14(12), 17640-17651.
Project: 2017-T2-2-069 
Journal: ACS Nano
Abstract: Highly active oxygen evolution reaction (OER) electrocatalysts are important to effectively transform renewable electricity to fuel and chemicals. In this work, we construct a series of multimetal oxide nanoplate OER electrocatalysts through successive cation exchange followed by electrochemical oxidation, whose electronic structure and diversified metal active sites can be engineered via the mutual synergy among multiple metal species. Among the examined multimetal oxide nanoplates, CoCeNiFeZnCuOx nanoplates exhibit the optimal adsorption energy of OER intermediates. Together with the high electrochemical active surface area, the CoCeNiFeZnCuOx nanoplates manage to deliver a small overpotential of 211 mV at an OER current density of 10 mA cm-2 (η10) with a Tafel slope as low as 21 mV dec-1 in 1 M KOH solution, superior to commercial IrO2 (339 mV at η10, Tafel slope of 55 mV dec-1), which can be stably operated at 10 mA cm-2 (at an overpotential of 211 mV) and 100 mA cm-2 (at an overpotential of 307 mV) for 100 h.
ISSN: 1936-0851
DOI: 10.1021/acsnano.0c08571
Schools: School of Materials Science and Engineering 
School of Chemical and Biomedical Engineering 
School of Mechanical and Aerospace Engineering 
Research Centres: Environmental Process Modelling Centre 
Nanyang Environment and Water Research Institute 
Rights: © 2020 American Chemical Society. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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