Electrocatalytic Properties of Electrochemically‐Polymerized Metal‐Phenolic Networks
Name
ChemElectroChem - 2024 - Zaragoza - Electrocatalytic Properties of Electrochemically‐Polymerized Metal‐Phenolic Networks.pdf
Description
Published version
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912.02 KB
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Checksum (MD5)
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Author(s)
Zaragoza, Nadia
Widder, Sage
Huynh, Heidi
Zamani, Marjon
Furst, Ariel L
Date Issued
May 17, 2024
Journal
ChemElectroChem
Publisher
Wiley
Citation
Zaragoza, Nadia, Widder, Sage, Huynh, Heidi, Zamani, Marjon and Furst, Ariel L. 2024. "Electrocatalytic Properties of Electrochemically‐Polymerized Metal‐Phenolic Networks." ChemElectroChem, 11 (10).
Version
Final published version
Abstract
Metal‐phenolic networks (MPNs) are a promising platform for developing new heterogeneous catalytic materials for water splitting technologies. This study systematically investigates the relationship between MPN composition and catalytic properties via electropolymerization of copper and cobalt combined with lignin, tannic acid, epigallocatechin‐3‐gallate (EGCG), and gallic acid polyphenols. We find that the choice of metal, size of polyphenol, and polymerization method have the greatest impact on the propensity of MPNs for catalyzing hydrogen evolution. For example, gallic acid‐based MPNs result in smoother surfaces with ~2 nm roughness, resulting in low surface area and lower average current densities compared to all other polyphenols tested. Cobalt‐based MPNs show higher current densities compared to copper, yet higher onset potentials. The results provide a map of design choices that can be used to increase the catalytic performance of new materials used in water electrolysis.
MIT Department
Massachusetts Institute of Technology. Department of Chemical Engineering
Massachusetts Institute of Technology. Center for Environmental Health Sciences
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DOI of Published Version
https://doi.org/10.1002/celc.202400093
