Bipyridine Modified Conjugated Carbon Aerogels as a Platform for the Electrocatalysis of Oxygen Reduction Reaction

Leigh Peles-Strahl; Noam Zion; Oran Lori; Naomi Levy; Galit Bar; Adi Dahan; Lior Elbaz

doi:10.1002/adfm.202100163

Bipyridine Modified Conjugated Carbon Aerogels as a Platform for the Electrocatalysis of Oxygen Reduction Reaction

Leigh Peles-Strahl
, Noam Zion
, Oran Lori
, Naomi Levy
, Galit Bar
, Adi Dahan
, Lior Elbaz

Department of Chemistry

Soreq Nuclear Research Center

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

Aerogels offer a great platform for heterogeneous electrocatalysis owing to their high surface area and porosity. Atomically dispersed transition metal ions can be imbedded in these platforms at ultra-high site density to make them catalytically active for various reactions. Herein, the synthesis of a new class of conjugated microporous organic aerogels that are used as covalent 3D frameworks for the electrocatalysis of oxygen reduction reaction (ORR) is reported. Modified aerogels functionalized with bipyridine ligands enable copper ion complexation in a single-step synthesis. The aerogels’ structures are fully characterized using a wide array of spectroscopic and microscopic methods, and heat-treated in order to make them electronically conductive. After heat treatment at 600 °C, the aerogels maintained their macrostructure and became active ORR catalysts in alkaline environment, showing high mass activity and ultra-high site density.

Original language	English
Article number	2100163
Journal	Advanced Functional Materials
Volume	31
Issue number	26
DOIs	https://doi.org/10.1002/adfm.202100163
State	Published - 23 Jun 2021

Bibliographical note

Publisher Copyright:
© 2021 Wiley-VCH GmbH

Funding

This work was conducted in the framework of the Israeli Fuel Cells Consortium (part of the Israeli National Center for Electrochemical Propulsion), and supported by the Israeli Ministry of Energy, Israel Ministry of Science and Technology, and the Israeli Science Foundation. The authors would also like to thank Soreq NRC for partially funding this research. L.P.S. thanks the support of the Golda Meir Scholarship for Advancing Women in Science and Technology, provided by the Ministry of Science and Technology, Israel.

Funders
Israeli Fuel Cells Consortium
Israeli Ministry of Energy, Israel Ministry of Science and Technology
Soreq NRC
Israel Science Foundation
Ministry of science and technology, Israel
Israel National Research Center for Electrochemical Propulsion

Keywords

aerogels
conjugated polymers
covalent organic frameworks
electrocatalysis
oxygen reduction

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10.1002/adfm.202100163

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title = "Bipyridine Modified Conjugated Carbon Aerogels as a Platform for the Electrocatalysis of Oxygen Reduction Reaction",

abstract = "Aerogels offer a great platform for heterogeneous electrocatalysis owing to their high surface area and porosity. Atomically dispersed transition metal ions can be imbedded in these platforms at ultra-high site density to make them catalytically active for various reactions. Herein, the synthesis of a new class of conjugated microporous organic aerogels that are used as covalent 3D frameworks for the electrocatalysis of oxygen reduction reaction (ORR) is reported. Modified aerogels functionalized with bipyridine ligands enable copper ion complexation in a single-step synthesis. The aerogels{\textquoteright} structures are fully characterized using a wide array of spectroscopic and microscopic methods, and heat-treated in order to make them electronically conductive. After heat treatment at 600 °C, the aerogels maintained their macrostructure and became active ORR catalysts in alkaline environment, showing high mass activity and ultra-high site density.",

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AU - Peles-Strahl, Leigh

AU - Zion, Noam

AU - Lori, Oran

AU - Levy, Naomi

AU - Bar, Galit

AU - Dahan, Adi

AU - Elbaz, Lior

PY - 2021/6/23

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N2 - Aerogels offer a great platform for heterogeneous electrocatalysis owing to their high surface area and porosity. Atomically dispersed transition metal ions can be imbedded in these platforms at ultra-high site density to make them catalytically active for various reactions. Herein, the synthesis of a new class of conjugated microporous organic aerogels that are used as covalent 3D frameworks for the electrocatalysis of oxygen reduction reaction (ORR) is reported. Modified aerogels functionalized with bipyridine ligands enable copper ion complexation in a single-step synthesis. The aerogels’ structures are fully characterized using a wide array of spectroscopic and microscopic methods, and heat-treated in order to make them electronically conductive. After heat treatment at 600 °C, the aerogels maintained their macrostructure and became active ORR catalysts in alkaline environment, showing high mass activity and ultra-high site density.

AB - Aerogels offer a great platform for heterogeneous electrocatalysis owing to their high surface area and porosity. Atomically dispersed transition metal ions can be imbedded in these platforms at ultra-high site density to make them catalytically active for various reactions. Herein, the synthesis of a new class of conjugated microporous organic aerogels that are used as covalent 3D frameworks for the electrocatalysis of oxygen reduction reaction (ORR) is reported. Modified aerogels functionalized with bipyridine ligands enable copper ion complexation in a single-step synthesis. The aerogels’ structures are fully characterized using a wide array of spectroscopic and microscopic methods, and heat-treated in order to make them electronically conductive. After heat treatment at 600 °C, the aerogels maintained their macrostructure and became active ORR catalysts in alkaline environment, showing high mass activity and ultra-high site density.

KW - aerogels

KW - conjugated polymers

KW - covalent organic frameworks

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Bipyridine Modified Conjugated Carbon Aerogels as a Platform for the Electrocatalysis of Oxygen Reduction Reaction

Abstract

Bibliographical note

Funding

Keywords

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