MOF-derived Fe,Co@N–C bifunctional oxygen electrocatalysts for Zn–air batteries

Duan, Xinde; Ren, Xiaobing; Pan, Na; Zhang, Mingdao; Zheng, He‐Gen

doi:10.1039/d0ta02825h

Cited by 177 publications

(78 citation statements)

References 45 publications

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“…Two or more kinds of inorganic centers from metal ions or clusters can be incorporated in bimetallic-MOFs, coordinating with different organic ligands, or linkers containing different metals. To obtain a controlled composition, different metals can play an important role [ 141 , 142 ]. Moreover, the M 1 and M 2 coupling is vital for supporting the electrocatalytic performance.…”

Section: Energy Applications Of Mof-derived Electrocatalystsmentioning

confidence: 99%

Design Engineering, Synthesis Protocols, and Energy Applications of MOF-Derived Electrocatalysts

et al. 2021

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The core reactions for fuel cells, rechargeable metal–air batteries, and hydrogen fuel production are the oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and hydrogen evolution reaction (HER), which are heavily dependent on the efficiency of electrocatalysts. Enormous attempts have previously been devoted in non-noble electrocatalysts born out of metal–organic frameworks (MOFs) for ORR, OER, and HER applications, due to the following advantageous reasons: (i) The significant porosity eases the electrolyte diffusion; (ii) the supreme catalyst–electrolyte contact area enhances the diffusion efficiency; and (iii) the electronic conductivity can be extensively increased owing to the unique construction block subunits for MOFs-derived electrocatalysis. Herein, the recent progress of MOFs-derived electrocatalysts including synthesis protocols, design engineering, DFT calculations roles, and energy applications is discussed and reviewed. It can be concluded that the elevated ORR, OER, and HER performances are attributed to an advantageously well-designed high-porosity structure, significant surface area, and plentiful active centers. Furthermore, the perspectives of MOF-derived electrocatalysts for the ORR, OER, and HER are presented.

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Section: Energy Applications Of Mof-derived Electrocatalystsmentioning

confidence: 99%

Design Engineering, Synthesis Protocols, and Energy Applications of MOF-Derived Electrocatalysts

et al. 2021

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“…[185] Recently, Duan et al fabricated hierarchical Fe,Co@N-C bimetallic materials derived from Fe 3+ and glucosamine-encapsulated ZIF-8/67 as illustrated in Figure 12a. [186] Moreover, they evaluated the ORR and OER performance of FeCoN 8 using DFT computations and free energy diagrams as illustrated in Figure 12b. They concluded that the overpotential of FeCoN 8 was less than individual CoN 4 or FeN 4 .…”

Section: Transition Metal-doped Carbonsmentioning

confidence: 99%

“…Figure 12. a) Synthesis scheme of FeCo-N-C-T. b) Free energy diagram of CoN 4 , FeN 4,and FeCoN 8 at the equilibrium potential (U 0 = 0.402 V) for ORR and OER and ORR. Reproduced with permission [186]. Copyright 2020, The Royal Society of Chemistry.…”

mentioning

confidence: 99%

Advances in Zeolite Imidazolate Frameworks (ZIFs) Derived Bifunctional Oxygen Electrocatalysts and Their Application in Zinc–Air Batteries

Arafat

Azhar

Zhong

et al. 2021

Advanced Energy Materials

166

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The fast growth in human population and the quick cultural advancement of human society leads to the tremendous increase in energy demand. [1] During the past, fossil fuels were used as the main energy sources, while their excessive use based on the conventional combustion technology releases excessive greenhouse gases into the environment, causing adverse impact on the sustainability of ecosystem. To cope with the challenges of stringent environmental legislations and the reliance on fossil fuels, renewable Secondary Zn-air batteries (ZABs) are recognized as one of the most promising power sources for the future with lucrative features of low cost, high energy density, eco-friendliness, and high safety. However, the widespread implementation of ZABs is still hampered by the sluggish oxygen redox reactions. Thus the deployment of cost-effective and highly efficient air electrodes to substitute precious metals (Pt/Ir), is highly challenging, however, highly desired. Zeolitic imidazolate frameworks (ZIFs) are emerging functional materials, which demonstrate several outstanding characteristics, such as high specific surface area, high conductivity, self-doped N, open pore structure, versatile compositions and favourable chemical stability. Through varying the metal/organic moiety or by employing different synthesis protocols, ZIFs with different properties could be obtained. Being adaptable, desired functionalities may be further incorporated into ZIFs through pre-treatment, in situ treatment, and post treatment. Thus, ZIFs are the ideal precursors for the preparation of variety of bi-functional air electrodes for ZABs by materials tuning, morphological control, or by materials hybridization. Here, the recent advances of ZIFs-based materials are critically surveyed from the perspective of synthesis, morphology, structure and properties, and correlated with performance indicators of ZABs. Finally, the major challenges and future prospects of ZIFs associated with ZABs are discussed.

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“…For decades, numerous researches on highly efficient bifunctional oxygen electrocatalysts have been published. Table 1 summarizes recently studied catalysts with high bifunctional activities, which could be divided to noble metal‐based catalysts [ 68–74 ] , carbon‐based metal‐free catalysts, [ 75–80 ] and transition metal‐based catalysts (including metal/metal alloys [ 81–85 ] , oxides [ 86–88 ] , hydroxides [ 89–92 ] , chalcogenides [ 93–95 ] , phosphides [ 96–99 ] , nitrides [ 100–102 ] , carbides, [ 103–105 ] and MOFs [ 106,107 ] ). Especially, for metal chalcogenides, nitrides, and phosphides, they may be oxidized to the corresponding metal oxides/hydroxides in the oxidative environments of OER.…”

Section: Fundamentals Of Rechargeable Zn‐air Batteriesmentioning

confidence: 99%

Binder‐Free Air Electrodes for Rechargeable Zinc‐Air Batteries: Recent Progress and Future Perspectives

Yan

2021

Small Methods

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Designing an efficient air electrode is of great significance for the performance of rechargeable zinc (Zn)‐air batteries. However, the most widely used approach to fabricate an air electrode involves polymeric binders, which may increase the interface resistance and block electrocatalytic active sites, thus deteriorating the performance of the battery. Therefore, binder‐free air electrodes have attracted more and more research interests in recent years. This article provides a comprehensive overview of the latest advancements in designing and fabricating binder‐free air electrodes for electrically rechargeable Zn‐air batteries. Beginning with the fundamentals of Zn‐air batteries and recently reported bifunctional active catalysts, self‐supported air electrodes for liquid‐state and flexible solid‐state Zn‐air batteries are then discussed in detail. Finally, the conclusion and the challenges faced for binder‐free air electrodes in Zn‐air batteries are also highlighted.

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MOF-derived Fe,Co@N–C bifunctional oxygen electrocatalysts for Zn–air batteries

Abstract: MOF-derived Fe,Co@N-C bifunctional electrocatalysts for oxygen reduction reactions and oxygen evolution reactions have been prepared via a scalable method, exhibiting ultra-high catalytic activity and promising performance in Zn–air batteries.

Cited by 177 publications

References 45 publications

Design Engineering, Synthesis Protocols, and Energy Applications of MOF-Derived Electrocatalysts

Design Engineering, Synthesis Protocols, and Energy Applications of MOF-Derived Electrocatalysts

Advances in Zeolite Imidazolate Frameworks (ZIFs) Derived Bifunctional Oxygen Electrocatalysts and Their Application in Zinc–Air Batteries

Binder‐Free Air Electrodes for Rechargeable Zinc‐Air Batteries: Recent Progress and Future Perspectives

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