Experimental and theoretical insights into cobalt nanoparticles encapsulated in N- and S-codoped carbon as advanced bifunctional electrocatalyst for rechargeable zinc-air batteries

Yan, Xuemin; Tu, Yuankun; Yuan, Huicong; Xia, Yuyang; Jiang, Yu; Zhu, Shenghua; Li, Chuanhua; Tang, Haolin; Du, Peng; Lei, Ming

doi:10.1007/s42114-023-00656-x

Cited by 12 publications

(4 citation statements)

References 57 publications

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“…The introduction of additional heteroatoms can disrupt the electron density symmetry at the Mn–N–C active site and adjust the interfacial configuration of the Mn atom. ,, To improve the local cooperation environment of the Mn–N x , less electronegative heteroatom dopants (S, P, B, etc.) can be introduced as the first or second nearest neighbor coordination atoms. ,, These heteroatoms are incorporated into Mn–N–C to adjust their electronic and geometric properties. ,, Heteroatomic coordination can modify the electrical structure of Mn atoms, heighten the binding affinity of reactants, and enhance the resistance to deactivation of catalysts. , Optimization of the coordination environment of heteroatoms has been shown significantly to enhance both the catalytic efficacy and stability. ,, …”

Section: Mn–n–c Electrocatalyst For Orrmentioning

confidence: 99%

“…Energy serves as the fundamental cornerstone of human progress and development . The continuous growth of the population is accompanied by an increase in energy demands. − Nevertheless, the dependence on conventional fossil fuels has led to escalating environmental pollution, encompassing global warming and rising sea levels due to increased carbon dioxide emissions. − Consequently, current research focuses on developing economical and effective technologies for innovative approaches to clean energy conversion and storage, such as water decomposition, metal-air batteries, hydrogen storage and fuel cells. − In metal-air batteries and proton exchange membrane fuel cells, oxygen reduction reaction (ORR), as an important chemical reaction, usually restricts their actual performance. , The ORR generally proceeds through a 4-electron (4e – ) pathway and displays sluggish kinetics, which results in high energy barriers for the reaction. ,− Therefore, it is imperative to advance the development of exceptional electrocatalysts to accelerate the electrochemical ORR kinetics. − Presently, the common commercial catalysts predominantly composed of Pt demonstrate high catalytic performance. , However, the substantial cost of Pt-based catalysts makes them unsuitable to meet future market demands. − Hence, there is an urgent need to explore nonplatinum group (NPG) catalysts with efficient and high performances to reduce the independence of expensive Pt-based materials. − …”

Section: Introductionmentioning

confidence: 99%

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Recent Progress and Prospects of Manganese–Nitrogen–Carbon Electrocatalysts for Oxygen Reduction Reaction

Wang,

Yan,

Deng

et al. 2024

Energy Fuels

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The oxygen reduction reaction (ORR) holds significant importance in the electrochemical processes of energy conversion systems. The kinetics of the ORR are sluggish as it is involved in multistep reactions. It is imperative to investigate ORR electrocatalysts with outstanding performance and durability accelerating their kinetics. Manganese−nitrogen−carbon (Mn−N−C) materials offer significant advantages including efficient atom utilization and easily tunable coordination structures, rendering them promising candidates for enhancing ORR catalytic activity. The mini-review provides a concise overview of the fundamental principles underlying the ORR. Then, three strategies for regulating the coordination structure are summarized to improve the ORR catalytic activity of Mn−N−C catalysts: adjusting the coordination number of N atoms around Mn atoms, doping nonmetal atoms, and doping metal atoms. Finally, this mini-review outlines the challenges and prospects associated with the Mn− N−C catalyst for ORR. This mini-review is anticipated to deepen the comprehension of ORR electrocatalysts for readers by presenting targeted optimization methods to regulate the configuration of Mn−N−C catalysts.

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Section: Mn–n–c Electrocatalyst For Orrmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recent Progress and Prospects of Manganese–Nitrogen–Carbon Electrocatalysts for Oxygen Reduction Reaction

Wang,

Yan,

Deng

et al. 2024

Energy Fuels

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“…Recent studies have revealed that the stability of nanoparticles is a major problem. In order to improve stability and fluorescence properties, O, Se, Te, and N are essential substitutional elements (9)(10)(11)(12)(13) . The stability of the compound is improved by doping elements that are capable of forming secondary compounds.…”

Section: Introductionmentioning

confidence: 99%

“…The possibility of different ionic states for N acts as an anionic substitution as well as the cationic substitution in II-VI compounds, particularly in CdS, when compared with chalcogens and halogens. Cationic substitution studies in CdS are available (10) , but no anionic substitution studies are available in CdS nanoparticles. Recently, Popov et al, doped nitrogen in ZnS (14) and Shi et al, reported an improvement in the stability of CdS nanostructures by the inclusion of nitrogen (12) .…”

Section: Introductionmentioning

confidence: 99%

Tailoring the Inherent Magnetism of N:CdS Nanoparticles with Co2+ Doping

Reddy¹,

Vandana²,

Kumar³

2023

IJST

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Objectives:The purpose of this study is to report the changes in structural, electrical, optical, and magnetic properties of N: CdS nanoparticles with Co 2+ doping, which have applications in the fields of opto-magnetic and spintronic devices. Methods: Nitrogen and cobalt-co-doped CdS nanoparticles (NPs) have been prepared using the surfactant-assisted chemical co-precipitate method. Findings: The X-Ray Diffraction (XRD) studies with X'pert High Score Plus software confirm the existence of multiphase and the size of the as prepared particles in the nanorange (1-2 nm). UV-VIS. absorption spectral analysis showed a considerable blue shift with the inclusion of nitrogen and a further Burstein-mass effect, i.e., a red shift with increasing Co 2+ ion concentration. The strong green light emissions observed in photoluminescence (PL) studies are attributed to the trapping of Co 2+ and N 3ions in F-centers. The characteristic g = 1.995 obtained from electron paramagnetic resonance (EPR) studies confirms the inclusion of nitrogen in the tetrahedral sites of the CdS core and the increased stability of nanoparticles. The vibrating sample magnetometer (VSM) studies revealed novel magnetic behaviour of nanoparticles at low fields. Novelty: Tunable band gap variations, ferromagnetic nature at low fields are the unique features observed in NPs with useful applications in the fields of opto-magnetic and spintronic applications. Nitrogen and cobalt-co-doped CdS nanoparticles (NPs) have been prepared using the surfactant assisted chemical co-precipitate method. The X-ray diffraction (XRD) studies with X'pert high score plus software confirm the existence of multiple phases and the size of the as prepared particles in the nanorange (1-2nm). UV-VIS absorption spectral analysis showed a considerable blue shift with the inclusion of nitrogen and a further Burstein-mass effect, i.e., a red shift with increasing Co 2+ ion concentration. The strong green light emission observed in photoluminescence (PL) studies is attributed to the trapping of Co 2+ , N 3ions in F-centers. The characteristic g = 1.995 obtained from electron paramagnetic resonance (EPR) studies confirms the inclusion of nitrogen in the tetrahedral sites of the CdS core and the increased stability of nanoparticles. The vibrating sample magnetometer (VSM) studies revealed novel magnetic behaviour of nanoparticles at low fields.

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A Reasonable Design of MnCo2S4 and Activated Carbon Composite as Cathode Catalyst to Improve the Power Output of Microbial Fuel Cells

Lu,

Ren,

et al. 2023

Catal Lett

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Experimental and theoretical insights into cobalt nanoparticles encapsulated in N- and S-codoped carbon as advanced bifunctional electrocatalyst for rechargeable zinc-air batteries

Cited by 12 publications

References 57 publications

Recent Progress and Prospects of Manganese–Nitrogen–Carbon Electrocatalysts for Oxygen Reduction Reaction

Recent Progress and Prospects of Manganese–Nitrogen–Carbon Electrocatalysts for Oxygen Reduction Reaction

Tailoring the Inherent Magnetism of N:CdS Nanoparticles with Co2+ Doping

A Reasonable Design of MnCo2S4 and Activated Carbon Composite as Cathode Catalyst to Improve the Power Output of Microbial Fuel Cells

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