NIMTE OpenIR  > 2018专题
Three-dimensional interconnected nitrogen-doped mesoporous carbons as active electrode materials for application in electrocatalytic oxygen reduction and supercapacitors
Lin, Gaoxin; Ma, Ruguang; Zhou, Yao; Hu, Chun; Yang, Minghui; Liu, Qian; Kaskel, Stefan; Wang, Jiacheng
2018
Source PublicationJOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume527Pages:230-240
AbstractIn this paper, a series of nitrogen-doped mesoporous carbons (NMCs) with three-dimensional (3D) interconnected mesopores have been prepared using flour as carbon source, dicyanamide as nitrogen source and colloidal silica as hard template. The optimized material (NMC-4) prepared with the colloidal silica/flour mass ratio of 4 has a high nitrogen doping level of 5.69 at.% and large specific surface area of 995 m(2) g(-1) as well as 3D interconnected mesopores (12.9 nm). As the oxygen reduction reaction (ORR) electrocatalyst among various NMCs, NMC-4 exhibits the superior performance and much better stability and methanol crossover with a four-electron dominant reaction pathway compared to commercial 20 wt% Pt/C. Furthermore, as a supercapacitor (SC) electrode material, NMC-4 exhibits a high specific capacitance of 178.5 F g(-1) at a current density of 0.5 A g(-1) and long cycle life (94.5% capacity retention after 5000 cycles). It also shows a good rate capacity as 76.1% of original specific capacitance remains when the current density increases from 0.5 to 20 A g(-1). The high-performance of NMCs results from the synergetic effects of 3D interconnected mesopores, large surface area, and high N-doping level, enabling fast mass transport and electron transfer during the electrochemical process. This work provides a facile and efficient strategy to heteroatom-doped carbons from extensively available biomass, showing great potentials in electrocatalysis, energy storage, and other applications. (C) 2018 Published by Elsevier Inc.
KeywordHigh-performance Supercapacitor Metal-free Electrocatalyst Porous Carbon Surface-area Electrochemical Performance Superior Performance Graphitic Carbon Energy-storage Fuel-cells Graphene
Subject AreaEngineering ; Water Resources
Language英语
Document Type期刊论文
Identifierhttp://ir.nimte.ac.cn/handle/174433/17182
Collection2018专题
Recommended Citation
GB/T 7714
Lin, Gaoxin,Ma, Ruguang,Zhou, Yao,et al. Three-dimensional interconnected nitrogen-doped mesoporous carbons as active electrode materials for application in electrocatalytic oxygen reduction and supercapacitors[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2018,527:230-240.
APA Lin, Gaoxin.,Ma, Ruguang.,Zhou, Yao.,Hu, Chun.,Yang, Minghui.,...&Wang, Jiacheng.(2018).Three-dimensional interconnected nitrogen-doped mesoporous carbons as active electrode materials for application in electrocatalytic oxygen reduction and supercapacitors.JOURNAL OF COLLOID AND INTERFACE SCIENCE,527,230-240.
MLA Lin, Gaoxin,et al."Three-dimensional interconnected nitrogen-doped mesoporous carbons as active electrode materials for application in electrocatalytic oxygen reduction and supercapacitors".JOURNAL OF COLLOID AND INTERFACE SCIENCE 527(2018):230-240.
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