Template Free Preparation of Heteroatoms Doped Carbon Spheres with Trace Fe for Efficient Oxygen Reduction Reaction and Supercapacitor

Naveen, M.; Shim, Kyubin; Hossain, Md. Shahriar A.; Kim, Jung Ho; Shim, Yoon‐Bo

doi:10.1002/aenm.201602002

Cited by 167 publications

(94 citation statements)

References 48 publications

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“…The Raman spectra of the set of samples display the characteristic G‐band at 1590 cm −1 and the D‐band at 1350 cm −1 (Figure a) . The intensity D‐band to the G‐band ratio (I D /I G ) decreased as the carbonization temperature increased, i. e., Fe/Fe 3 C@NCNT‐750 (1.21), Fe/Fe 3 C@NCNT‐850 (1.23), Fe 3 O 4 @NCNT‐650 (1.34), indicating a high degree of graphitization . A higher graphitic degree would be beneficial for enhancing electrical conductivity and thus promotes charge transfer at catalytic interface …”

Section: Resultsmentioning

confidence: 79%

Fe/Fe₃C Nanoparticles Embedded in Nitrogen‐Doped Carbon Nanotubes as Multifunctional Electrocatalysts for Oxygen Catalysis and CO₂ Reduction

et al. 2017

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Hybrids of Fe/Fe3C embedded in N‐doped carbon nanotubes (Fe/Fe3C@NCNTs) are prepared by pyrolyzing mixtures of Fe3O4 nanoparticles and dicyandiamide. The systematic electrochemical study of Fe/Fe3C@NCNTs shows a decent catalytic activity toward the oxygen evolution reaction (OER) and the oxygen reduction reaction (ORR). The sample of Fe/Fe3C@NCNTs at 750 °C exhibits a remarkably high activity with an onset potential of 1.47 V for the OER, and an onset potential of 0.96 V and half‐wave potential 0.88 V for the ORR, which inspired us to set up a rechargeable Zn‐air battery with such Fe/Fe3C@NCNT nanohybrids as the cathode materials, showing a maximum power density of 198 mW cm−2 and long‐term stability after 500 cycles. We also demonstrate that Fe/Fe3C@NCNTs present favorable electrocatalytic activity towards the CO2 reduction reaction (CO2RR) with a low onset potential and good selectivity. The major products are a mixture of H2 and CO gases that can be used for methanol production in the Fischer−Tropsch process.

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Section: Resultsmentioning

confidence: 79%

Fe/Fe₃C Nanoparticles Embedded in Nitrogen‐Doped Carbon Nanotubes as Multifunctional Electrocatalysts for Oxygen Catalysis and CO₂ Reduction

et al. 2017

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“…The other peak at higher binding energy (168.3 eV) can be attributed to the C−SO x −C states . These heteroatom species can also lead to an increase of spin density of the carbon layer, which can further enhance the electrocatalytic activity . Hence, the XPS characterization not only demonstrates the successful preparation of Cu 3 N−Cu 3 P heterostructure but also proves the successful doping of N, P, S heteroatoms into carbon constituent to form Cu 3 N−Cu 3 P/NPSC hybrid material.…”

Section: Resultsmentioning

confidence: 99%

MOF‐Derived Copper Nitride/Phosphide Heterostructure Coated by Multi‐Doped Carbon as Electrocatalyst for Efficient Water Splitting and Neutral‐pH Hydrogen Evolution Reaction

et al. 2020

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Efficient and robust electrocatalysts composed of earth‐abundant elements to replace noble metals is highly essential for cost‐effective production of hydrogen from water splitting. Herein, we demonstrate the fabrication of SO42− anions bridged MOF‐derived Cu3N−Cu3P heterostructure coated by ultrathin N, P, S‐tri‐doped carbon (NPSC) on nickel foam (Cu3N−Cu3P/NPSCNWs@NF) via an interface reconstruction strategy. The first‐principle simulation demonstrates that both Cu3N, Cu3P and NPSC own good electrical conductivity, suggesting these species can lead to efficient electrocatalytic performance. The remarkable features of high intrinsic conductivity and interfacial heterostructures at Cu3N−Cu3P/NPSCNWs@NF have ensured excellent water splitting electrocatalytic activity with a low potential of 1.54 V at 10 mA cm−2 in 1 M KOH over 24 h, and additionally the resultant electrode exhibits impressive response for HER with an ultralow potential of 109 mV at 10 mA cm−2 in neutral‐pH media over 30 h.

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“…For P 2p (Figure c), a peak is observed at 134.0 eV, corresponding to P−O . In addition, the P species contribute to the enhancement of ORR via the increased spin density of the carbon material ,…”

Section: Resultsmentioning

confidence: 99%

Poplar‐Catkin‐Derived N, P Co‐doped Carbon Microtubes as Efficient Oxygen Electrocatalysts for Zn‐Air Batteries

Wan

Liu

et al. 2018

ChemElectroChem

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In this study, poplar‐catkin‐derived N, P co‐doped carbon microtube catalysts with highly active sites and a large accessible surface area exhibit desirable oxygen reduction reaction (ORR) activity in an alkaline solution and excellent applications in Zn‐air batteries (ZABs). In particular, the catalytic activity of the N, P co‐doped carbon microtubes toward the ORR is as good as that of benchmark Pt/C, albeit better in terms of tolerance and stability. Furthermore, a ZAB fabricated using the as‐developed catalyst exhibits a specific capacity of 649 mAh gZn−1 and a peak power density of 125 mW cm−2; these values are comparable to those of Pt/C catalysts (644 mAh gZn−1 and 130 mW cm−2, respectively), indicative of the promising applications for sustainable energy storage. In addition, an alkaline water‐splitting cell powered by this assembled ZAB can generate H2 gas in a stable manner under ambient conditions. The successful conversion of considerable catkin sources to high‐value carbon materials will provide insights into the future development of other high‐performance electrocatalysts from abundant “green” bio‐waste.

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Template Free Preparation of Heteroatoms Doped Carbon Spheres with Trace Fe for Efficient Oxygen Reduction Reaction and Supercapacitor

Cited by 167 publications

References 48 publications

Fe/Fe₃C Nanoparticles Embedded in Nitrogen‐Doped Carbon Nanotubes as Multifunctional Electrocatalysts for Oxygen Catalysis and CO₂ Reduction

Fe/Fe₃C Nanoparticles Embedded in Nitrogen‐Doped Carbon Nanotubes as Multifunctional Electrocatalysts for Oxygen Catalysis and CO₂ Reduction

MOF‐Derived Copper Nitride/Phosphide Heterostructure Coated by Multi‐Doped Carbon as Electrocatalyst for Efficient Water Splitting and Neutral‐pH Hydrogen Evolution Reaction

Poplar‐Catkin‐Derived N, P Co‐doped Carbon Microtubes as Efficient Oxygen Electrocatalysts for Zn‐Air Batteries

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Template Free Preparation of Heteroatoms Doped Carbon Spheres with Trace Fe for Efficient Oxygen Reduction Reaction and Supercapacitor

Cited by 167 publications

References 48 publications

Fe/Fe3C Nanoparticles Embedded in Nitrogen‐Doped Carbon Nanotubes as Multifunctional Electrocatalysts for Oxygen Catalysis and CO2 Reduction

Fe/Fe3C Nanoparticles Embedded in Nitrogen‐Doped Carbon Nanotubes as Multifunctional Electrocatalysts for Oxygen Catalysis and CO2 Reduction

MOF‐Derived Copper Nitride/Phosphide Heterostructure Coated by Multi‐Doped Carbon as Electrocatalyst for Efficient Water Splitting and Neutral‐pH Hydrogen Evolution Reaction

Poplar‐Catkin‐Derived N, P Co‐doped Carbon Microtubes as Efficient Oxygen Electrocatalysts for Zn‐Air Batteries

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Fe/Fe₃C Nanoparticles Embedded in Nitrogen‐Doped Carbon Nanotubes as Multifunctional Electrocatalysts for Oxygen Catalysis and CO₂ Reduction

Fe/Fe₃C Nanoparticles Embedded in Nitrogen‐Doped Carbon Nanotubes as Multifunctional Electrocatalysts for Oxygen Catalysis and CO₂ Reduction