Metal-free N-doped carbon blacks as excellent electrocatalysts for oxygen reduction reactions

Oh, Junghoon; Park, Sunghee; Jang, Dawoon; Shin, Yunseok; Lim, Donggyu

doi:10.1016/j.carbon.2019.01.056

Cited by 35 publications

(21 citation statements)

References 53 publications

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“…Furthermore, there are a large number of oxygen vacancies, oxygenated functional group and amino groups on the surface of NCQDs, these groups make NCQDs easier to complex with metal (Fe, Co and Ni) ions to form of metal oxide/Co−N−C structure which are favorable for oxygen reduction. In addition, Carbon black (CB), which have excellent conductivity and beneficial for the rapid kinetics process of the oxygen reduction reaction, has been widely used as supports for metal (Fe, Co and Ni)‐containing active species or additives in hybrid materials . With CB as carbon matrix, the catalyst will possess a better stability and methanol penetration resistance …”

Section: Introductionsupporting

confidence: 59%

Co²⁺‐coordinated NH₂‐carbon Quantum Dots Hybrid Precursor for the Rational Synthesis of Co−CoO_X/Co−N−C ORR Catalyst

et al. 2020

ChemCatChem

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For the goal of practical industrial development of fuel cells, design and synthesis of electrocatalysts for oxygen reduction reactions (ORR) with sustainable and high performance are of great significance. In this work, the coordination of NH2‐carbon quantum dots (NCQDs) with Co2+ on carbon black was reasonably achieved via one‐pot and low‐cost hydrothermal treatment for the first time. Citric acid (CA) and urea (UA) were taken as carbon and nitrogen sources for NCQDs, respectively. The coordination of Co2+ and NCQDs were well‐characterized using spectroscopic techniques such as FTIR, UV‐visible absorption and fluorescence. Carbonization of carbon black‐supported Co/NCQDs at 800 °C under N2 atmosphere endows the pyrolysis products with high catalytic activity. The Co−CoOX/Co−N−C possesses enhanced ORR performance in terms of positive onset‐potential (∼‐0.079 V vs. SCE) and half wave potential (E1/2) (∼‐0.201 V vs. SCE), high stability, as well as the accelerated reaction kinetics.

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Section: Introductionsupporting

confidence: 59%

Co²⁺‐coordinated NH₂‐carbon Quantum Dots Hybrid Precursor for the Rational Synthesis of Co−CoO_X/Co−N−C ORR Catalyst

et al. 2020

ChemCatChem

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“…The N doping can promote the electrocatalytic activity by increasing the conductivity, enhancing the adsorption strength of anion group (-OH), reducing the reaction energy barrier and accelerating the reaction kinetics (Li D. et al, 2018 ). Generally, there are two ways to introduce nitrogen atom: one is to select a precursor containing N elements, the other is to combine MOFs with N-containing materials, then allowing the heteroatomic doping of N in the post-processing process (Oh et al, 2019 ). With the study of N doping, the content of N doping is a key factor to affect the performance of catalyst.…”

Section: Co-based Mofs Materials For Hermentioning

confidence: 99%

Cobalt-Based Metal-Organic Frameworks and Their Derivatives for Hydrogen Evolution Reaction

Han

et al. 2020

Front. Chem.

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Hydrogen has been considered as a promising alternative energy to replace fossil fuels. Electrochemical water splitting, as a green and renewable method for hydrogen production, has been drawing more and more attention. In order to improve hydrogen production efficiency and lower energy consumption, efficient catalysts are required to drive the hydrogen evolution reaction (HER). Cobalt (Co)-based metal-organic frameworks (MOFs) are porous materials with tunable structure, adjustable pores and large specific surface areas, which has attracted great attention in the field of electrocatalysis. In this review, we focus on the recent progress of Co-based metal-organic frameworks and their derivatives, including their compositions, morphologies, architectures and electrochemical performances. The challenges and development prospects related to Co-based metal-organic frameworks as HER electrocatalysts are also discussed, which might provide some insight in electrochemical water splitting for future development.

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“…29 N-doped graphene material has been successfully used for oxygen reduction reaction. 30,31 However, it is still challenging to confirm Hg 0 adsorption on Pt SACs.…”

Section: Introductionmentioning

confidence: 99%

Theoretical insight into mercury species adsorption on graphene-based Pt single-atom catalysts

Xiao

et al. 2022

RSC Adv.

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Metal-free N-doped carbon blacks as excellent electrocatalysts for oxygen reduction reactions

Cited by 35 publications

References 53 publications

Co²⁺‐coordinated NH₂‐carbon Quantum Dots Hybrid Precursor for the Rational Synthesis of Co−CoO_X/Co−N−C ORR Catalyst

Co²⁺‐coordinated NH₂‐carbon Quantum Dots Hybrid Precursor for the Rational Synthesis of Co−CoO_X/Co−N−C ORR Catalyst

Cobalt-Based Metal-Organic Frameworks and Their Derivatives for Hydrogen Evolution Reaction

Theoretical insight into mercury species adsorption on graphene-based Pt single-atom catalysts

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Metal-free N-doped carbon blacks as excellent electrocatalysts for oxygen reduction reactions

Cited by 35 publications

References 53 publications

Co2+‐coordinated NH2‐carbon Quantum Dots Hybrid Precursor for the Rational Synthesis of Co−CoOX/Co−N−C ORR Catalyst

Co2+‐coordinated NH2‐carbon Quantum Dots Hybrid Precursor for the Rational Synthesis of Co−CoOX/Co−N−C ORR Catalyst

Cobalt-Based Metal-Organic Frameworks and Their Derivatives for Hydrogen Evolution Reaction

Theoretical insight into mercury species adsorption on graphene-based Pt single-atom catalysts

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Co²⁺‐coordinated NH₂‐carbon Quantum Dots Hybrid Precursor for the Rational Synthesis of Co−CoO_X/Co−N−C ORR Catalyst

Co²⁺‐coordinated NH₂‐carbon Quantum Dots Hybrid Precursor for the Rational Synthesis of Co−CoO_X/Co−N−C ORR Catalyst