The electrode-electrolyte interface where electrocatalytic reactions occur, buried between solid-catalysts and electrolytes, involves complicated processes of electron transfer and mass diffusion under an applied electric field.
Schematic of interfacial H-bond network for EDTA-free electrolyte. Schematic of interfacial H-bond network and the proposed regulation mechanism for EDTA-containing electrolyte. Credit: Science China Press The electrode-electrolyte interface where electrocatalytic reactions occur, buried between solid-catalysts and electrolytes, involves complicated processes of electron transfer and mass diffusion under an applied electric field.
Understanding the interfacial organization and possible interfacial interactions, such as those between the electrocatalysts and electrolytes or among electrolyte components, is essential for improving electrochemical performance via the co-optimization of electrocatalysts and electrolytes.This study proposes a strategy to regulate the electrode-electrolyte interface using Lewis-base ligand molecules. It involves adding trace amounts of ethylenediaminetetraacetic acid molecules and similar ligands as electrolyte additives. In situ infrared andmolecular dynamics calculations reveal the dynamic changes of ethylenediaminetetraacetic acid ligands at the electrochemical interface and their role in catalyzing COThe Lewis-base ligands reconstruct the cation solvation shell through Lewis acid-base interactions and reshape the interface hydrogen-bond network by forming an H-bond gap layer. This strategy can be further extended to a series of commercial catalysts. This study not only proposes a strategy of Lewis base ligand regulation of catalytic interfaces, but also elucidates the mechanism of Lewis base ligands in COelectrolysis, providing new insights into the interactions of electrolyte components in the electric double layer, and offering a new framework for understanding the organization of complex electrochemical interfaces.: Lewis-base ligand optimized electrolyte composition enhances CO₂ electrolysis performance retrieved 14 August 2024 from https://phys.org/news/2024-08-lewis-base-ligand-optimized-electrolyte.html This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.Aug 13, 2024 Use this form if you have come across a typo, inaccuracy or would like to send an edit request for the content on this page. For general inquiries, please use ourThank you for taking time to provide your feedback to the editors. Your feedback is important to us. However, we do not guarantee individual replies due to the high volume of messages.to let the recipient know who sent the email. Neither your address nor the recipient's address will be used for any other purpose. The information you enter will appear in your e-mail message and is not retained by Phys.org in any form.Get weekly and/or daily updates delivered to your inbox. You can unsubscribe at any time and we'll never share your details to third parties.
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