Rational design of three-dimensional nitrogen-doped carbon nanoleaf   networks for high-performance oxygen reduction

doi:10.1039/c4ta06764a

CORC > 北京大学 > 化学与分子工程学院

	Rational design of three-dimensional nitrogen-doped carbon nanoleaf networks for high-performance oxygen reduction
	Chen, Liang ; Xu, Chenyu ; Du, Ran ; Mao, Yueyuan ; Xue, Cheng ; Chen, Liming ; Qu, Liangti ; Zhang, Jin ; Yi, Tao
刊名	journal of materials chemistry a
	2015
关键词	CATALYST-FREE SYNTHESIS SENSITIZED SOLAR-CELLS GRAPHENE NANORIBBONS ELECTROCATALYTIC ACTIVITY SYNERGISTIC CATALYST NANOTUBE ELECTRODES HYBRID AEROGELS POROUS CARBON FUEL-CELLS SUPERCAPACITORS
DOI	10.1039/c4ta06764a
英文摘要	The application of conventional nanostructure carbon-based materials (such as graphene and carbon nanotubes (CNTs)) as catalysts for the oxygen reduction reaction always suffers from inferior conductivity and low surface area because both graphene and CNTs easily aggregate to form networks with many boundaries. Here, to solve those problems, we have rationally developed "carbon nanoleaf" networks for the oxygen reduction reaction of fuel cells. The "carbon nanoleaf" networks are constructed as aerogels with nitrogen-doped CNTs bridged with graphene nanoribbons (GNRs) by using CNTs as a single precursor. In these carbon nanoleaves, large amounts of unzipped nanoscale GNRs tightly attach to the intact inner walls of the CNTs and thus allow intrinsically good electrical contact. Self-assembly of the carbon nanoleaves into three-dimensional porous aerogel networks with large surface areas guarantees the ultrafast and sufficient mass transfer in the catalytic process. Moreover, the " carbon nanoleaf" networks restrain the aggregation of adjacent CNTs or GNRs, which is inevitable in other 3D CNT and/or graphene nanosheet/GNR networks, to reduce the possibility of the formation of boundaries. Accordingly, the prepared 3D carbon nanoleaf architectures possess a large surface area (380-497 m(2) g(-1)) and an excellent conductivity (up to 112 S m(-1)), much higher than those of other reported 3D carbon-based architectures. The " carbon nanoleaf" networks can thus act as newly developed oxygen reduction reaction electrocatalysts with a positive onset potential, ultra-low hydrogen peroxide production and excellent durability that are comparable to or better than those of commercial Pt/C catalysts both in alkaline and acidic solutions.; Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary; SCI(E); EI; 0; ARTICLE; yitao@fudan.edu.cn; 10; 5617-5627; 3
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/206071]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Chen, Liang,Xu, Chenyu,Du, Ran,et al. Rational design of three-dimensional nitrogen-doped carbon nanoleaf networks for high-performance oxygen reduction[J]. journal of materials chemistry a,2015.
APA	Chen, Liang.,Xu, Chenyu.,Du, Ran.,Mao, Yueyuan.,Xue, Cheng.,...&Yi, Tao.(2015).Rational design of three-dimensional nitrogen-doped carbon nanoleaf networks for high-performance oxygen reduction.journal of materials chemistry a.
MLA	Chen, Liang,et al."Rational design of three-dimensional nitrogen-doped carbon nanoleaf networks for high-performance oxygen reduction".journal of materials chemistry a (2015).