Journal ArticleDOI
Simple preparation of nanoporous few-layer nitrogen-doped graphene for use as an efficient electrocatalyst for oxygen reduction and oxygen evolution reactions
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TLDR
In this paper, a simple pyrolysis of graphene oxide and polyaniline was performed to obtain nitrogen-doped graphene (NG), which has excellent catalytic activity toward oxygen reduction reaction (ORR) in an alkaline electrolyte.About:
This article is published in Carbon.The article was published on 2013-03-01. It has received 326 citations till now. The article focuses on the topics: Electrocatalyst & Oxygen evolution.read more
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Nitrogen-doping hollow carbon nanospheres derived from conjugated microporous polymers toward oxygen reduction reaction.
Hanxue Sun,Peilei Zhou,Xingyun Ye,Juanjuan Wang,Zhuo Tian,Zhaoqi Zhu,Chonghua Ma,Weidong Liang,An Li +8 more
TL;DR: In this article , hollow-spherical conjugated microporous polymers (CMPs) comprising porphyrin units were synthesized as precursors to prepare N-doping porous carbon spheres by a direct pyrolysis method.
Journal ArticleDOI
Porous Carbon Nanosheets Derived from ZIF‐8 Treated with KCl as Highly Efficient Electrocatalysts for the Oxygen Reduction Reaction
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Preparation method of high-performance nitrogen-doped three-dimensional graphene
TL;DR: In this article, an improved Hummers method was used to prepare continuous large-piece graphene oxide; using a hydrothermal method to prepare the graphene oxide into graphene of a porous 3D structure; ultrasonically dispersing the graphene of the porous three-dimensional structure into an acid solution with the pH being 1-5, adding aniline, well mixing, adding ammonium persulfate, well-mixing, and transferring the obtained mixed liquid into a teflon container for hydro-thermal reaction so as to obtain a porous threedimensional graphene-poly
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Nanoscale mapping of catalytic hotspots on Fe, N-modified HOPG by scanning electrochemical microscopy-atomic force microscopy
TL;DR: Fe-coordinated nitrogen sites formed both in the edge and basal planes of highly ordered pyrolytic graphite constitute the primary oxygen reduction catalytic sites in acid solutions of this important yet insufficiently understood class of catalysts.
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CxNy particles@N-doped porous graphene: a novel cathode catalyst with a remarkable cyclability for Li-O2 batteries.
TL;DR: It is surprisingly found that the as-synthesized CxNy@NPG cathode not only demonstrates a remarkable cycling performance but also an intriguing high-rate capability, both of which can be attributed to a synergistic effect between the unique 3D porous structure and an effective N-doping.
References
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Nitrogen-Doped Graphene as Efficient Metal-Free Electrocatalyst for Oxygen Reduction in Fuel Cells
TL;DR: The resultant N-graphene was demonstrated to act as a metal-free electrode with a much better electrocatalytic activity, long-term operation stability, and tolerance to crossover effect than platinum for oxygen reduction via a four-electron pathway in alkaline fuel cells.
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Synthesis of N-Doped Graphene by Chemical Vapor Deposition and Its Electrical Properties
TL;DR: Electrical measurements show that the N-doped graphene exhibits an n-type behavior, indicating substitutional doping can effectively modulate the electrical properties of graphene.
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Reporting physisorption data for gas/solid systems with special reference to the determination of surface area and porosity (Provisional)
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Catalyst-Free Synthesis of Nitrogen-Doped Graphene via Thermal Annealing Graphite Oxide with Melamine and Its Excellent Electrocatalysis
TL;DR: A facile, catalyst-free thermal annealing approach for large-scale synthesis of NG using low-cost industrial material melamine as the nitrogen source is proposed, which can completely avoid the contamination of transition metal catalysts, and thus the intrinsic catalytic performance of pure NGs can be investigated.
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N-doping of graphene through electrothermal reactions with ammonia.
Xinran Wang,Xiaolin Li,Li Zhang,Youngki Yoon,Peter K. Weber,Hailiang Wang,Jing Guo,Hongjie Dai +7 more
TL;DR: An n-type graphene field-effect transistor that operates at room temperature is fabricated and confirmed the carbon-nitrogen species in graphene thermally annealed in ammonia is covalently functionalized by nitrogen species.