Redox-driven strong interfacial interactions between MnO<sub>2</sub> and covalent organic nanosheets for efficient oxygen reduction electrocatalysis

Kim, Min-Sung; Gu, Tae‐Ha; Park, Soo-Hyeon; Kim, Tae-Hoon; Jo, Young‐Heon; Jeong, Young Kyu; Park, Jin Kuen; Hwang, Seong‐Ju

doi:10.1039/d2ta02622h

Cited by 6 publications

(1 citation statement)

References 35 publications

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“…18 Also, CONs could be facile building blocks to fabricate nanocomposites between organic and inorganic components. 22 Meanwhile, a simple one pot strategy was suggested to synthesize a SnS 2 -based graphene nanocomposite. 23 The resulting anode material showed high lithium storage capacity because of the well-dispersed SnS 2 nanoparticles within graphene matrices.…”

Section: Introductionmentioning

confidence: 99%

Long-term cycling stability of a SnS₂-based covalent organic nanosheet anode for lithium-ion batteries

et al. 2023

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Section: Introductionmentioning

confidence: 99%

Long-term cycling stability of a SnS₂-based covalent organic nanosheet anode for lithium-ion batteries

et al. 2023

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Discovery of FeP/Carbon Dots Nanozymes for Enhanced Peroxidase‐Like Catalytic and Antibacterial Activity

Dong,

Liu,

Petrov

et al. 2024

Adv Healthcare Materials

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Iron phosphide/carbon (FeP/C) serving as electrocatalysts exhibit excellent activity in oxygen reduction reaction (ORR) process. H2O2 catalyzed by peroxidase (POD) is similar to the formation of new electron transfer channels and the optimization of adsorption of oxygen‐containing intermediates or desorption of products in ORR process. However, it is still a challenge to discover FeP/C with enhanced POD‐like catalytic activity in the electrocatalytic database for biocatalysis. The discovery of FeP/carbon dots (FeP/CDs) nanozymes driven by electrocatalytic activity for enhanced POD‐like ability is demonstrated. FeP/CDs derived from CDs‐Fe3+ chelates show enhanced POD‐like catalytic and antibacterial activity. FeP/CDs exhibit enhanced POD‐like activities with a specific activity of 31.1 U mg−1 that is double higher than that of FeP. The antibacterial ability of FeP/CDs nanozymes with enhanced POD‐like activity is 98.1%. The antibacterial rate of FeP/CDs nanozymes (250 µg mL−1) increased by 5%, 15%, and 36% compared with FeP, Fe2O3/CDs, and Cu3P/CDs nanozymes, respectively. FeP/CDs nanozymes will attract more efforts to discover or screen transition metal phosphide/C nanozymes with enhanced POD‐like catalytic activity for biocatalysis in the electrocatalytic database.

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Amorphous MnO₂ Lamellae Encapsulated Covalent Triazine Polymer‐Derived Multi‐Heteroatoms‐Doped Carbon for ORR/OER Bifunctional Electrocatalysis

Huo,

Lv,

et al. 2024

Advanced Materials

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The intelligent construction of non‐noble metal materials that exhibit reversible oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) with bifunctional electrocatalytic performance is greatly coveted in the realm of znic‐air batteries (ZABs). Herein, a crafted structure‐amorphous MnO2 lamellae encapsulated covalent triazine polymer‐derived N, S, P co‐doped carbon sphere (A‐MnO2/NSPC) is designed using a self‐doped pyrolysis coupled with an in‐situ encapsulation strategy. The customized A‐MnO2/NSPC‐2 demonstrates a superior bifunctional electrocatalytic performance, confirmed by a small ΔE index of 0.64 V for ORR/OER. Experimental investigations, along with density functional theory (DFT) calculations validate that predesigned amorphous MnO2 surface defects and abundant heteroatom catalytic active sites collectively enhance the oxygen electrocatalytic performance. Impressively, the A‐MnO2/NSPC‐based rechargeable liquid ZABs show a large open‐circuit potential of 1.54 V, an ultrahigh peak power density of 181 mW cm−2, an enormous capacity of 816 mAh g−1 and a remarkable stability for more than 1720 discharging/charging cycles. Additionally, the assembled flexible all‐solid‐state ZABs also demonstrate outstanding cycle stability, surpassing 140 discharging/charging cycles. Therefore, this highly operable synthetic strategy offers substantial understanding in the development of magnificent bifunctional electrocatalysts for various sustainable energy conversations and beyond.This article is protected by copyright. All rights reserved

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Redox-driven strong interfacial interactions between MnO₂ and covalent organic nanosheets for efficient oxygen reduction electrocatalysis

Abstract: Hybridization between inorganic and organic nanostructures has attracted a great deal of research interest because of its usefulness as an efficient synthetic method for high-performance electrocatalysts. In this study, a...

Cited by 6 publications

References 35 publications

Long-term cycling stability of a SnS₂-based covalent organic nanosheet anode for lithium-ion batteries

Long-term cycling stability of a SnS₂-based covalent organic nanosheet anode for lithium-ion batteries

Discovery of FeP/Carbon Dots Nanozymes for Enhanced Peroxidase‐Like Catalytic and Antibacterial Activity

Amorphous MnO₂ Lamellae Encapsulated Covalent Triazine Polymer‐Derived Multi‐Heteroatoms‐Doped Carbon for ORR/OER Bifunctional Electrocatalysis

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Redox-driven strong interfacial interactions between MnO2 and covalent organic nanosheets for efficient oxygen reduction electrocatalysis

Abstract: Hybridization between inorganic and organic nanostructures has attracted a great deal of research interest because of its usefulness as an efficient synthetic method for high-performance electrocatalysts. In this study, a...

Cited by 6 publications

References 35 publications

Long-term cycling stability of a SnS2-based covalent organic nanosheet anode for lithium-ion batteries

Long-term cycling stability of a SnS2-based covalent organic nanosheet anode for lithium-ion batteries

Discovery of FeP/Carbon Dots Nanozymes for Enhanced Peroxidase‐Like Catalytic and Antibacterial Activity

Amorphous MnO2 Lamellae Encapsulated Covalent Triazine Polymer‐Derived Multi‐Heteroatoms‐Doped Carbon for ORR/OER Bifunctional Electrocatalysis

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Product

Resources

About

Redox-driven strong interfacial interactions between MnO₂ and covalent organic nanosheets for efficient oxygen reduction electrocatalysis

Long-term cycling stability of a SnS₂-based covalent organic nanosheet anode for lithium-ion batteries

Long-term cycling stability of a SnS₂-based covalent organic nanosheet anode for lithium-ion batteries

Amorphous MnO₂ Lamellae Encapsulated Covalent Triazine Polymer‐Derived Multi‐Heteroatoms‐Doped Carbon for ORR/OER Bifunctional Electrocatalysis