2011
DOI: 10.1021/nn103584t
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Abstract: The electronic and chemical properties of graphene can be modulated by chemical doping foreign atoms and functional moieties. The general approach to the synthesis of nitrogen-doped graphene (NG), such as chemical vapor deposition (CVD) performed in gas phases, requires transitional metal catalysts which could contaminate the resultant products and thus affect their properties. In this paper, we propose a facile, catalyst-free thermal annealing approach for large-scale synthesis of NG using low-cost industrial… Show more

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Cited by 2,353 publications
(1,579 citation statements)
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References 58 publications
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“…It can be clearly observed that the nitrogen-doped graphene sheets still maintain the twodimensional ultrathin flexible structure of the graphene sheets [4,5]. However, nitrogen-doped graphene sheets have more corrugations and scrolling than the graphene sheets, which is attributed to the defective structures formed by chemical doping nitrogen atoms [16,23]. The disordered structures in the nitrogen-doped graphene sheets could increase lithium storage sites, which is well consistent with the results of electrochemical performance.…”
Section: Electrochemical Measurementssupporting
confidence: 79%
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“…It can be clearly observed that the nitrogen-doped graphene sheets still maintain the twodimensional ultrathin flexible structure of the graphene sheets [4,5]. However, nitrogen-doped graphene sheets have more corrugations and scrolling than the graphene sheets, which is attributed to the defective structures formed by chemical doping nitrogen atoms [16,23]. The disordered structures in the nitrogen-doped graphene sheets could increase lithium storage sites, which is well consistent with the results of electrochemical performance.…”
Section: Electrochemical Measurementssupporting
confidence: 79%
“…Moreover, the G band of the nitrogen-doped graphene sheets is down-shifted to 1590 cm −1 compared with the graphene sheets (1591 cm −1 ). The downshift of the G band can be attributed to electron-donating capability of nitrogen heteroatoms [ 16,17,32,33]. As is known, the G band with E 2g symmetry is related to phonon vibrations in sp 2 carbon materials, while the D band with A 1g symmetry is ascribed to disordered carbon, edge defects, and other defects [32,33].…”
Section: Microstructural Characterizationmentioning
confidence: 99%
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“…graphene [10,[23][24][25][26][27][28][29][30][31][32][33], carbon nanotubes [11,20,21,[34][35][36][37][38][39][40][41][42][43], carbon nanofibers [12,[44][45][46][47], mesoporous carbon [15,22], graphitic carbon [48,49], carbon spheres [19,[50][51][52][53], carbon nanocages 4 [54], flower-like carbon [55], carbon aerogel [56,57], vesicular carbon [58], nanodiamonds [59]) relatively few have been tested in actual fuel cell conditions [58,[60][61][62]…”
Section: Introductionmentioning
confidence: 99%
“…In particular, heteroatom‐embedded carbons such as N‐doped carbon,10, 11 graphene,20, 22 and carbon nanofiber (CNF)16 have been considered as alternatives to Pt‐based catalyst because of their high catalytic property and durability for the ORR. Nitrogen‐doped graphene has attracted tremendous attention as an ORR electrocatalyst while also serving as a support because of its high electric conductivity, high catalytic activity toward the ORR, and unique structure.…”
mentioning
confidence: 99%