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Open AccessArticle

A Simple Mechanical Method to Modulate the Electrochemical Electrosorption Processes at Metal Surfaces

Institute for New Energy Materials & Low-Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, NO.391 Binshui West Street Xiqing District, Tianjin 300384, China
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Academic Editor: José Heráclito Zagal
Molecules 2019, 24(20), 3662; https://doi.org/10.3390/molecules24203662
Received: 11 September 2019 / Revised: 29 September 2019 / Accepted: 8 October 2019 / Published: 11 October 2019
(This article belongs to the Special Issue Electrocatalysis for Energy Conversion and Environmental Remediation)
The coupling of electrochemical processes and surface strain has been widely investigated in the past. The present work briefly introduces a simple method to modulate the electrochemical process at metal surfaces by mechanical bending. In this way, the static strain at the metal layer can reach the order of 1%. The cyclic voltammogram was used to study the electrosorption process of oxygen species at sputtered metal surfaces under different strain states. The experimental results show that the desorption peak potential of oxygen at the Au surface shifted positively by tensile strain, whereas the desorption peak potential at the Pt surface shifted negatively. This phenomenon indicates that tensile strain has an opposite effect on the electrosorption process for Au and Pt surfaces. Our results agree with the previous reports on the potential variation induced by dynamic strain. This work thus offers a simple method to modulate the electrosorption process at metal surfaces and then to enhance the reactivity of metal electrodes. View Full-Text
Keywords: mechanical bending; large static strain; metal thin films; electrosorption process; potential-strain response mechanical bending; large static strain; metal thin films; electrosorption process; potential-strain response
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MDPI and ACS Style

Yuan, A.; Zhang, H.; Deng, Q. A Simple Mechanical Method to Modulate the Electrochemical Electrosorption Processes at Metal Surfaces. Molecules 2019, 24, 3662.

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