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CMOS-Compatible Doped-Multilayer-Graphene …

This work reports multilayer graphene (MLG) directly grown on SiO 2 substrate at 300 °C by a novel pressure-assisted solid-phase diffusion synthesis method, and, for the first time, demonstrates a CMOS-compatible intercalation doped graphene nanoribbon (DGNR) interconnect technology with smaller electrical resistivity than Cu, Co and Ru ...

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In situ formation of molecular Ni-Fe active sites on ...

Molecularly well-defined Ni sites at heterogeneous interfaces were derived from the incorporation of Ni2+ ions into heteroatom-doped graphene. The molecular Ni sites on graphene were redox-active. However, they showed poor activity toward oxygen evolution reaction (OER) in KOH aqueous solution. We demonstrated for the first time that the presence of Fe3+ ions in the solution could bond at the ...

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Preparation of a Nitrogen-Doped Reduced Graphene …

As one of the key factors that limit the development of vanadium redox flow battery (VRFB), the positive redox couple of VO 2+ /VO 2 + plays an important role on the overall performance of VRFB. To improve the kinetics of a positive reaction, a new designed nitrogen-doped reduced graphene oxide-modified graphite felt (N-rGO/GF) electrode was prepared by coupling the methods of freeze-drying ...

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Preparation and Specific Capacitance Properties of …

2019-7-1 · Sulfur, nitrogen co-doped graphene quantum dots (S, N-GQDs) with high crystallinity were obtained by a top-down strategy. The as-prepared S, N-GQDs were investigated and the results indicate that S, N-GQDs exhibit a transverse dimension about 20 nm and a topographic height of 1–2 layers graphene. The incorporation of S, N can effectively reduce the layers of GQDs and strip the graphene …

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Synthesis of Phosphorus‐Doped Graphene and its …

2015-2-16 · Phosphorus‐doped (P‐doped) graphene with the P doping level of 1.30 at % was synthesized by annealing the mixture of graphene and phosphoric acid. The presence of P was confirmed by elemental mapping and X‐ray photoelectron spectroscopy, while the morphology of P‐doped graphene was revealed by using scanning electron microscopy and ...

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Synthesis of N-doped graphene by chemical vapor …

To realize graphene-based electronics, various types of graphene are required; thus, modulation of its electrical properties is of great importance. Theoretic studies show that intentional doping is a promising route for this goal, and the doped graphene might promise fascinating properties and wide …

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Synthesis of N-doped graphene by chemical vapor …

To realize graphene-based electronics, various types of graphene are required; thus, modulation of its electrical properties is of great importance. Theoretic studies show that intentional doping is a promising route for this goal, and the doped graphene might promise fascinating properties and wide …

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Nitrogen-doped graphene | N-Doped graphene | …

This nitrogen-doped graphene shows high onset potential (ca. 940 mV vs. RHE) carrying out the electrochemical oxygen reduction reaction (ORR) towards a 4 electron pathway avoiding the production of H 2 O 2. Furthermore, this material is reported to be more stable (to MeOH) and durable (CO tolerance) than Pt-based catalysts. Packaging

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Nitrogen-doped graphene | N-Doped graphene | …

This nitrogen-doped graphene shows high onset potential (ca. 940 mV vs. RHE) carrying out the electrochemical oxygen reduction reaction (ORR) towards a 4 electron pathway avoiding the production of H 2 O 2. Furthermore, this material is reported to be more stable (to MeOH) and durable (CO tolerance) than Pt-based catalysts. Packaging

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Nitrogen Doped Graphene as Potential Material for …

The nitrogen doped graphene was synthesized by hydrothermal route utilizing 2-Chloroethylamine hydrochloride as nitrogen precursor in the presence of graphene oxide (GO). Nitrogen-doped graphene material is developed for its application in hydrogen storage at room temperature. Nitrogen doped graphene layered material shows ~1.5 wt% hydrogen storage capacity achieved at room temperature …

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Piezoelectric sensor based on graphene-doped PVDF ...

The structural design of the self-powered PES based on GR-doped PVDF nanofibers is shown in Figure 1a.The cross section of the self-powered PES shows three parts, namely the GR-doped PVDF piezoelectric layer in the center, the electrode layer of Ti 3 C 2 MXene and Ag NWs on both sides, and the PDMS protective layer on the outermost sides. Each PVDF fiber contains GR doping.

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Structure prediction of boron-doped graphene by …

2018-3-19 · Motivated by the recently synthesized boron-doped graphene with relatively high concentration, here we employ machine learning methods to search the most stable structures of doped boron atoms in graphene, in conjunction with the atomistic simulations. From the determined stable structures, we find that in the free-standing pristine graphene ...

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Observation of Plasmarons in Quasi-Freestanding …

Fig. 1 (A) The Dirac energy spectrum of graphene in a non-interacting, single-particle picture.(B and C) Experimental spectral functions of doped graphene perpendicular and parallel to the ΓK direction of the graphene Brillouin zone.The dashed lines are guides to the dispersion of the observed hole and plasmaron bands. The red lines are at k = 0 (the K point of the graphene Brillouin zone).

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(PDF) Heteroatom-doped graphene materials: …

doped graphene materials. The mechanisms underlying their advantageous uses for energy storage, energy conversion, sensing, and gas storage are highlighted , aiming to stimulate more competent ...

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Ultrasensitive gas detection of large-area boron …

The gas-sensing performance of graphene could be remarkably enhanced by incorporating dopants into its lattice based on theoretical calculations. However, to date, experimental progress on boron-doped graphene (BG) is still very scarce. Here, we achieved the controlled growth of large-area, high-crystallinity BG sheets and shed light on their electronic features associated with boron dopants ...

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Doped graphene supercapacitors - IOPscience

2015-11-17 · P-doped graphene can operate stably in the aqueous electrolyte at 1.7 V with excellent cycling performance (3% performance degradation after 5000 cycles at a current density of 5 A g −1). A high energy density of 11.64 W h kg −1 and a high power density of 831 W kg −1 were achieved .

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Doped graphene nanoribbons with potential -- …

2020-12-24 · Graphene nanoribbons made of differently doped segments. The researchers, led by Roman Fasel, have now achieved a new milestone by allowing graphene nanoribbons consisting of differently doped ...

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(PDF) Doped graphene for metal-free catalysis

N-doped graphene (N-graphene) has been the most intensively. studied doping model. N is next to C in the periodic table of. chemical elem ents, and its electr onegativi ty is larger than that of.

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Highly Fluorescent Nitrogen-Doped Graphene …

Nitrogen-doped graphene quantum dots (N-GQDs) with strong blue fluorescence and a high quantum yield of 88.9% were synthesized via a facile one-pot hydrothermal treatment with citric acid (CA) and ethylenediamine (EDA) as carbon and nitrogen sources, respectively. The blue fluorescence emission is independent of the excitation wavelengths.