Advanced Design of Metal Nanoclusters and Single Atoms Embedded in C<sub> 1</sub> N<sub> 1</sub> ‐Derived Carbon Materials for ORR, HER, and OER - Université de Lorraine Access content directly
Journal Articles Advanced Functional Materials Year : 2023

Advanced Design of Metal Nanoclusters and Single Atoms Embedded in C 1 N 1 ‐Derived Carbon Materials for ORR, HER, and OER

Abstract

Single atoms and nanoclusters of Fe, Ni, Co, Cu, and Mn are systematically designed and embedded in a well-defined C1N1-type material that has internal cavities of ≈0.6 nm based on four N atoms. These N atoms serve as perfect anchoring points for the nucleation of small nanoclusters of different metal natures through the creation of metal-nitrogen (TM-N4) bonds. After pyrolysis at 800 °C, TM@CNx-type structures are obtained, where TM is the transition metal and x < 1. Fe@CNx and Co@CNx are the most promising for oxygen reduction reaction and hydrogen evolution reaction, respectively, with a Pt-like performance, and Ni@CNx is the most active for oxygen evolution reaction (OER) with an EOER of 1.59 V versus RHE, far outperforming the commercial IrO2 (EOER = 1.72 V). This systematic and benchmarking study can serve as a basis for the future design of advanced multi-functional electrocatalysts by modulating and combining the metallic nature of nanoclusters and single atoms.
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Dates and versions

hal-04146229 , version 1 (29-06-2023)

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Javier Quílez-Bermejo, Sergio García-Dalí, Ayoub Daouli, Andrea Zitolo, Rafael L.S. Canevesi, et al.. Advanced Design of Metal Nanoclusters and Single Atoms Embedded in C 1 N 1 ‐Derived Carbon Materials for ORR, HER, and OER. Advanced Functional Materials, 2023, 33 (21), pp.2300405. ⟨10.1002/adfm.202300405⟩. ⟨hal-04146229⟩
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