DataVXAdvanced MaterialsPaper
journal article·2024-08Open access

Instantaneous Thermal Energy for Swift Synthesis of Single‐Atom Catalysts for Unparalleled Performance in Metal–Air Batteries and Fuel Cells

Injoon Jang, Sehyun Lee, Dong‐gun Kim, Vinod K. Paidi, Sujin Lee, Nam Dong Kim, Jae Young Jung, Kug‐Seung Lee, Hyung‐Kyu Lim, Pil Kim, Sung Jong Yoo

Advanced Materials· Volume 36· Issue 32
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Abstract

Abstract Based on experimental and computational evidence, phthalocyanine (Pc) compounds in the form of quaternary‐bound metal‐nitrogen (N) atoms are the most effective catalysts for oxygen reduction reaction (ORR). However, the heat treatment process used in their synthesis may compromise the ideal structure, causing the agglomeration of transition metals. To overcome this issue, a novel method is developed for synthesizing iron (Fe) single‐atom catalysts with ideal structures supported by thermally exfoliated graphene oxide (GO). This is achieved through a short heat treatment of only 2.5 min involving FePc and N, N‐dimethylformamide in the presence of GO. According to the synthesis mechanism revealed by this study, carbon monoxide acts as a strong linker between the single Fe atoms and graphene. It facilitates the formation of a structure containing oxygen species between FeN4 and graphene, which provides high activity and stability for the ORR. These catalysts possess an enormous number of active sites and exhibit enhanced activity toward the alkaline ORR. They demonstrate excellent performance when applied to real electrochemical devices, such as zinc–air batteries and anion exchange membrane fuel cells. It is expected that the instantaneous heat treatment method developed in this study will aid in the development of high‐performing single‐atom catalysts.
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Research context

Energy storageNanomaterialsCatalysis & surfacesMaterials processing

OpenAlex topics: Electrocatalysts for Energy Conversion · Fuel Cells and Related Materials · Catalysis and Hydrodesulfurization Studies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Hydrogen·Fuel Cell Research Center Korea Institute of Science and Technology (KIST) 5 Hwarang‐ro 14‐gil Seongbuk‐gu Seoul 02792 Republic of Korea

Department of Chemical Engineering Chungbuk National University Cheongju Chungbuk 28644 Republic of Korea

Department of Environment and Energy Engineering Sungshin Women's University Seoul 01133 Republic of Korea

School of Chemical Engineering School of Semiconductor and Chemical Engineering Clean Energy Research Center Jeonbuk National University Jeonju 54896 Republic of Korea

European Synchrotron Radiation Facility Grenoble 38043 Cedex 9 France

Functional Composite Materials Research Center Korea Institute of Science and Technology (KIST) Jeollabuk‐do 55324 Republic of Korea

Fuel Cell Research and Demonstration Center Hydrogen Energy Institute Korea Institute of Energy Research (KIER) Joellabuk‐do 56332 Republic of Korea

Pohang Accelerator Laboratory Pohang University of Science and Technology Pohang 37673 Republic of Korea

Division of Chemical and Bioengineering Kangwon National University Chuncheon 24341 Republic of Korea

Division of Energy & Environmental Technology KIST school University of Science and Technology (UST) Daejeon 34113 Republic of Korea

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