Co4N nanoparticles encapsulated in N-doped carbon box as tri-functional catalyst for Zn-air battery and overall water splitting

Ge, Huaiyun; Li, Guangda; Shen, Jianxing; Ma, Wenqing; Meng, Xianwei; Xu, Liqiang

doi:10.1016/j.apcatb.2020.119104

Cited by 178 publications

(99 citation statements)

References 54 publications

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“…This shows that the ion diffusion coefficient is a dynamic change process, and the phase transition during charge and discharge is an important reason for its change. [37][38][39]…”

Section: Resultsmentioning

confidence: 99%

“…Prepare the CoSe 2 /N: The synthesis process was based on a previous method. [39] Co(NO 3 ) 2 •6H 2 O (1 mmol) and Pluronic F127 (0.625 g) were dissolved in 25 mL methanol. 2-methylimidazole (3 mmol) was dissolved in another 25 mL methanol and stirred for 1 h. The abovementioned two solutions were mixed and aged at 60 C for 4 h. The samples were washed by methanol for several times and dried at 60 C overnight, and then obtained ZIF-67 nanoparticles.…”

Section: Methodsmentioning

confidence: 99%

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In Situ Growth of CoSe₂ Coated in Porous Carbon Layers as Anode for Efficient Sodium‐Ion Batteries

Fan

Liu

et al. 2021

Energy Tech

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A novel composite material of CoSe2/N‐doped carbon box (CoSe2/NC) is successfully synthesized using zeolitic imidazolate frameworks‐67 as the sacrificial templates through a simple two‐step calcine process. The CoSe2 nanoparticles are encapsulated in N‐doped carbon layers, which can seriously avoid agglomeration. When used CoSe2/NC as anode materials for sodium‐ion batteries (SIBs), it exhibits an excellent high reversible specific capacity and a superior cycling stability of 390.2 mA h g−1 at 5 A g−1 over 4000 cycles. The excellent performance of CoSe2/NC can be attributed to cooperation of CoSe2 nanoparticles and N‐doped carbon layers. Carbon layers coated on the surface of CoSe2 nanoparticles not only improve a well conductivity to facilitate the charge transfer, but also buffer the structure to expand during the Na+ insertion/extraction process. Furthermore, this novel porous structure provides more active sites and increases contact areas between the materials and the electrolyte, thus increasing the specific capacity and cycle stability. This work provides a possibility of anode materials for SIBs with excellent electrochemistry performance.

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“…This shows that the ion diffusion coefficient is a dynamic change process, and the phase transition during charge and discharge is an important reason for its change. [37][38][39]…”

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

In Situ Growth of CoSe₂ Coated in Porous Carbon Layers as Anode for Efficient Sodium‐Ion Batteries

Fan

Liu

et al. 2021

Energy Tech

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“…11C). 130 The doping of N into Co nanocrystals can reduce the band gap of Co and enhance the adsorption free energy of Co 4 N. The DFT calculation demonstrated the improved electronic conductivity of Co 4 N, and greatly decreased the overpotential from *OH to OH À in the ORR and from *O to *OOH in the OER. As a result, Co 4 N@NC-2 exhibits outstanding ORR performance with a half-wave potential of 0.84 V and a low OER overpotential of 290 mV.…”

Section: Metal Phosphides Metal Phosphides Havementioning

confidence: 92%

Metal–organic framework based bifunctional oxygen electrocatalysts for rechargeable zinc–air batteries: current progress and prospects

Cui

Yin

et al. 2020

Chem. Sci.

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“…For instance, Ge et al synthesized Co 4 N nanoparticles embedded in N-doped carbon via successive pyrolysis of ZIF-67 at 900 °C (N 2 atmosphere) and at 350 °C (NH 3 atmosphere) by using the precursors as illustrated in Figure 18a. [110] Co 4 N nanoparticles promoted the electronic conductivity and also contributed in reducing the adsorption free energy of intermediates during OER/ORR activities for the rate-determining step (RDS). Furthermore, DFT calculations underscored that nitrogen doping in Co lattice assisted in enhancing the electronic conductivity, suppressing the overpotential and eventually accelerating OER/ORR reaction kinetics (Figure 18b).…”

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

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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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Co4N nanoparticles encapsulated in N-doped carbon box as tri-functional catalyst for Zn-air battery and overall water splitting

Cited by 178 publications

References 54 publications

In Situ Growth of CoSe₂ Coated in Porous Carbon Layers as Anode for Efficient Sodium‐Ion Batteries

In Situ Growth of CoSe₂ Coated in Porous Carbon Layers as Anode for Efficient Sodium‐Ion Batteries

Metal–organic framework based bifunctional oxygen electrocatalysts for rechargeable zinc–air batteries: current progress and prospects

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

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Co4N nanoparticles encapsulated in N-doped carbon box as tri-functional catalyst for Zn-air battery and overall water splitting

Cited by 178 publications

References 54 publications

In Situ Growth of CoSe2 Coated in Porous Carbon Layers as Anode for Efficient Sodium‐Ion Batteries

In Situ Growth of CoSe2 Coated in Porous Carbon Layers as Anode for Efficient Sodium‐Ion Batteries

Metal–organic framework based bifunctional oxygen electrocatalysts for rechargeable zinc–air batteries: current progress and prospects

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

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Product

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In Situ Growth of CoSe₂ Coated in Porous Carbon Layers as Anode for Efficient Sodium‐Ion Batteries

In Situ Growth of CoSe₂ Coated in Porous Carbon Layers as Anode for Efficient Sodium‐Ion Batteries