Nitrogen-doped hollow carbon polyhedron derived from salt-encapsulated ZIF-8 for efficient oxygen reduction reaction

Jin, Yan; Zheng, Xiangjun; Wei, Chaohui; Sun, Zhihui; Zeng, Kai; Shen, Liwei; Sun, Jiawen; Rümmeli, Mark H.; Yang, Ruizhi

doi:10.1016/j.carbon.2020.09.005

Cited by 83 publications

(40 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The cyclic voltammograms (CVs) of NiFeMo@N‐rGO‐X (X=1, 2, 3, 4), NiFe@N‐rGO and N‐rGO show discernible cathodic oxygen reduction peaks (Figure S8a). The oxygen reduction peak of NiFeMo@N‐rGO‐X (X=3) appears at a higher potential than the explored counterparts, which is indicative of faster kinetics [47] . The linear sweep voltammetry (LSV) was applied to further reveal the intrinsic activity of the samples.…”

Section: Resultsmentioning

confidence: 99%

NiFeMo Nanoparticles Encapsulated within Nitrogen‐Doped Reduced Graphene Oxide as Bifunctional Electrocatalysts for Zinc‐Air Batteries

et al. 2020

Self Cite

View full text Add to dashboard Cite

Rechargeable metal‐air batteries (MABs) have emerged as promising candidates for portable energy storage technologies because of their favorable energy/power density, safety, and cost‐effectiveness. However, the lack of advanced bifunctional electrocatalysts for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) restricts the commercial realization of rechargeable MABs. Herein, we developed a facile fabrication route to prepare N‐doped graphene oxide encapsulating nanoparticles of a ternary NiFe metal oxide (NiFeMo@N‐rGO) serving as an efficient bifunctional catalyst. The obtained NiFeMo@N‐rGO bifunctional catalyst demonstrates a comparable catalytic reactivity when compared to precious metal catalysts in alkaline electrolytes regarding ORR/OER performance (ORR: half‐wave potential of 0.82 V; OER: overpotential of 330 mV; ▵E: 0.73 V at 10 mA cm−2). The assembled zinc‐air batteries (ZABs) catalyzed by NiFeMo@N‐rGO exhibit a high power density of 120 mW cm−2 and a capacity of 721 mAh gZn−1, coupled with long‐term durability of over 200 h. This contribution paves a practical avenue to prepare efficient bifunctional catalysts for superior ZABs.

show abstract

Section: Resultsmentioning

confidence: 99%

NiFeMo Nanoparticles Encapsulated within Nitrogen‐Doped Reduced Graphene Oxide as Bifunctional Electrocatalysts for Zinc‐Air Batteries

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…c LSV curves of the carbon products and Pt/C in oxygen-saturated 0.1 M KOH solution at a rotation speed of 1600 rpm and a scanning rate of 10 mV s −1 [ 123 ], Copyright© 2014, The Royal Society of Chemistry. d Schematic illustration of the synthesis of MOF-templated NPS-C-MOF-5 as a metal-free electrocatalyst for the ORR, e CVs and f LSVs of different samples in O 2 saturated 0.1 M KOH solution [ 128 ], Copyright © 2021, Elsevier …”

Section: Energy Applications Of Mof-derived Electrocatalystsmentioning

confidence: 99%

“…But still, more understanding is needed to probe the vital function of the doped carbon on ORR activity which is considerable in designing and optimizing the metal-free doped carbon electrocatalysis. Additionally, Yan et al [ 128 ] obtained nitrogen-doped hollow carbon polyhedrons (NHCP) by directly pyrolyzing ZIF-8 and followed by immersing in NaCl (Fig. 5 d).…”

Section: Energy Applications Of Mof-derived Electrocatalystsmentioning

confidence: 99%

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

et al. 2021

View full text Add to dashboard Cite

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.

show abstract

“…However, B-N co-doped ZIF-8 derived carbon was not able to achieve high activity, presented low current densities and eventually, led to the inferior overall ORR catalytic performance in contrast to the rest of derived carbon materials. Furthermore, when the resultant catalyst was employed for ZAB, it sustained only for 100 h with a larger potential gap of 1.02 V. [148] Copyright 2020, Elsevier Ltd. d) Typical SEM images of NPCTC-850. Reproduced with permission.…”

Section: Morphology Of Zif-derived Materialsmentioning

confidence: 99%

“…Similarly, Yan et al also managed to prepare N-doped, metal-free porous carbon network through the pyrolysis of ZIF-8, templated by NaCl (Figure 9a). [148] Morphology analysis reveals a rhombic dodecahedral shape; a hollow structures surrounded by a thin layer of carbon layer followed by the washing of NaCl template, graphitic walls (SAED images) and uniform distribution of C, N, and O (Figure 9b). As a result, such electrocatalyst enabled the reduction of O 2 (Figure 9c) with high ORR activity and selectivity possessing a E 1/2 : 0.86 V and ZAB harvested a large peak power density (272 mW cm −2 ) and long cyclic stability (160 h).…”

Section: Wwwadvancedsciencenewscommentioning

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

148

View full text Add to dashboard Cite

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.

show abstract

Nitrogen-doped hollow carbon polyhedron derived from salt-encapsulated ZIF-8 for efficient oxygen reduction reaction

Cited by 83 publications

References 44 publications

NiFeMo Nanoparticles Encapsulated within Nitrogen‐Doped Reduced Graphene Oxide as Bifunctional Electrocatalysts for Zinc‐Air Batteries

NiFeMo Nanoparticles Encapsulated within Nitrogen‐Doped Reduced Graphene Oxide as Bifunctional Electrocatalysts for Zinc‐Air Batteries

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

Contact Info

Product

Resources

About