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900416

Sigma-Aldrich

Nitrogen-doped graphene

Sinónimos:

N-Doped graphene, NDG, NG

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About This Item

UNSPSC Code:
12352200

form

powder

composition

Carbon, >80 wt. %
Nitrogen, >4 wt. %

color

black

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General description

This highly exfoliated nitrogen-doped graphene exhibits high electrochemical activity towards oxygen reduction in alkali medium providing an affordable industrial alternative to currently used noble metal-based catalysts (i.e. Pt, Pd). 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 H2O2. Furthermore, this material is reported to be more stable (to MeOH) and durable (CO tolerance) than Pt-based catalysts.This highly exfoliated nitrogen-doped graphene exhibits high electrochemical activity towards oxygen reduction in alkali medium providing an affordable industrial alternative to currently used noble metal-based catalysts (i.e. Pt, Pd). 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 H2O2. Furthermore, this material is reported to be more stable (to MeOH) and durable (CO tolerance) than Pt-based catalysts.

Physical properties

Electrocatalytic oxygen reduction reaction (ORR) onset potential: >-0.1 V (0.1 M KOH vs Ag/AgCl).

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificados de análisis (COA)

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Facile synthesis of mesoporous nitrogen-dopedgraphene: An efficient methanol?tolerantcathodiccatalystfor oxygen reductionreaction.
Conga H, et al.
Nano Energy, 3, 55-63 (2014)
Frédéric Joucken et al.
Scientific reports, 5, 14564-14564 (2015-09-29)
Understanding the modification of the graphene's electronic structure upon doping is crucial for enlarging its potential applications. We present a study of nitrogen-doped graphene samples on SiC(000) combining angle-resolved photoelectron spectroscopy, scanning tunneling microscopy and spectroscopy and X-ray photoelectron spectroscopy
Tao Hu et al.
Physical chemistry chemical physics : PCCP, 16(3), 1060-1066 (2013-11-30)
Chemical doping of nitrogen into graphene can significantly enhance the reversible capacity and cyclic stability of the graphene-based lithium ion battery (LIB) anodes, and first principles calculations based on density functional theory suggested that pyridinic-N shows stronger binding with Li

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