Hydrothermal synthesis of macroscopic nitrogen-doped graphene hydrogels for ultrafast supercapacitor

Chen, Ping; Yang, Jingjing; Li, Shanshan; Wang, Zheng; Xiao, Tian-Yuan; Qian, Yuhong; Yu, Shu‐Hong

doi:10.1016/j.nanoen.2012.09.003

Cited by 524 publications

(250 citation statements)

References 35 publications

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“…The peaks at 284.6, 285.2, 285.8, 288.1 and 289.3 eV in the C1s XPS spectrum (as shown in Fig. 3A) corresponded to the sp 2 -hybrizied graphitic carbon, C-N, C-O, C@O and OAC@O, respectively [41][42][43], which were in agreement with FT-IR spectrum of NPC800 (Fig. S7, Supporting information).…”

Section: Physical Characterization Of Npc800supporting

confidence: 78%

Nitrogen-doped porous carbons from bipyridine-based metal-organic frameworks: Electrocatalysis for oxygen reduction reaction and Pt-catalyst support for methanol electrooxidation

Zhu

Cai

et al. 2014

Carbon

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Available online xxxx A B S T R A C TA novel pyridine-containing metal-organic framework (MOF), [Zn(bpdc)DMA]AEDMF, was first constructed by solvothermal reaction of 2,2 0 -bipyridine-5,5 0 -dicarboxylate (bpdc) with zinc nitrate, and then it was converted to nitrogen-doped porous carbons (NPCs) by direct carbonization. The as-prepared porous carbon (NPC800) was characterized by scanning electron microscopy (SEM), X-ray powder diffraction (XRD), N 2 sorption isotherms, and Xray photoelectron spectroscopy. NPC800 was modified onto glassy carbon electrode surface for investigating its electrochemical applications. Cyclic voltammetry (CV) and linear sweep voltammetry were performed to evaluate the electrocatalytic activity of NPC800 for oxygen reduction reaction (ORR) in alkaline solution. NPC800 exhibited better ORR activity than commercial Pt/C. Pt-catalyst supported on NPCs (Pt/NPC800) was prepared by means of electrodeposition and characterized by SEM, Energy dispersive spectrometry and XRD. The electrocatalytic activity and stability of Pt/NPC800 for methanol oxidation reaction (MOR) were estimated in acidic methanol solution by CV and chronoamperometric curves, respectively. Pt/NPC800 showed catalytic role for MOR, and also had better stability than Pt-catalyst supported on commercial Vulcan XC-72.

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Section: Physical Characterization Of Npc800supporting

confidence: 78%

Nitrogen-doped porous carbons from bipyridine-based metal-organic frameworks: Electrocatalysis for oxygen reduction reaction and Pt-catalyst support for methanol electrooxidation

Zhu

Cai

et al. 2014

Carbon

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“…Nitrogen-containing carbon materials can be prepared by the carbonization of nitrogen-enriched polymers and materials, such as polyaniline, melamine, polypyrrole and so on [24][25][26][27][28][29][30][31][32]. It is believed that presence of nitrogen changes the electron donor/ acceptor properties of carbon materials, thus affects the formation of electric double-layers [33]. In the meantime, the introduction of nitrogen could produce a pseudo-capacitance besides the electric double-layer capacitance, enhance the wettability in electrodeelectrolyte interface, and improve the capacitance of electrode [34].…”

Section: Introductionmentioning

confidence: 99%

Nitrogen-containing carbon microspheres for supercapacitor electrodes

Zhu

Wang

Gan

et al. 2015

Electrochimica Acta

145

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“…The peak at 285.0 eV corresponds to sp 2 -hybridized graphite carbon, the peaks at 286.4 eV and 288.9 eV can be ascribed to C-OH and C¼O, respectively. 32 The high-resolution N1s spectra of the product are shown in the Fig. 3(c), which indicates mainly three kinds of nitrogen were …”

Section: Electrochemical Measurementsmentioning

confidence: 96%

Preparation of N-Doped Nanoporous Carbon from Crude Biomass and its Electrochemical Activity

2016

NANO

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H 2 O 2 detection plays an important role in electrochemical sensing since H 2 O 2 often acts as an intermediate product or regulator in various reactions. Nanoporous carbon (NPC) can be a potential candidate in electrochemical sensing because of its high speci¯c surface area, various pore sizes and structures. In this work, we reported the preparation of N-doped NPC derived from the highly available, accessible and recyclable plant Typha orientalis. The products have high surface area (highest surface areas of 1439.0 m 2 g À1 Þ and a number of nanopores. Highest content of nitrogen atom in the product is 3.66 at.%). Typical product exhibits high electrocatalytic activity for reduction of hydrogen peroxide. The product may have further use for glucose biosensing. We developed a low-cost, simple and readily scalable approach to prepare the excellent carbon electrocatalyst directly from crude biomass. In addition, because of high surface area and doping of nitrogen element, the product may¯nd broad applications in the¯elds of supercapacitors, lithium-ion batteries, gas uptake and so on.

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Hydrothermal synthesis of macroscopic nitrogen-doped graphene hydrogels for ultrafast supercapacitor

Cited by 524 publications

References 35 publications

Nitrogen-doped porous carbons from bipyridine-based metal-organic frameworks: Electrocatalysis for oxygen reduction reaction and Pt-catalyst support for methanol electrooxidation

Nitrogen-doped porous carbons from bipyridine-based metal-organic frameworks: Electrocatalysis for oxygen reduction reaction and Pt-catalyst support for methanol electrooxidation

Nitrogen-containing carbon microspheres for supercapacitor electrodes

Preparation of N-Doped Nanoporous Carbon from Crude Biomass and its Electrochemical Activity

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