Nitrogen-doped graphene for dye-sensitized solar cells and the role of   nitrogen states in triiodide reduction

doi:10.1039/c3ee42516a

CORC > 北京大学 > 化学与分子工程学院

	Nitrogen-doped graphene for dye-sensitized solar cells and the role of nitrogen states in triiodide reduction
	Hou, Shaocong ; Cai, Xin ; Wu, Hongwei ; Yu, Xiao ; Peng, Ming ; Yan, Kai ; Zou, Dechun
刊名	energy environmental science
	2013
关键词	FREE COUNTER ELECTRODES OXYGEN-REDUCTION METAL-FREE FUNCTIONALIZED GRAPHENE LOW-COST CARBON NANOTUBES PERFORMANCE OXIDE FIBER FILMS
DOI	10.1039/c3ee42516a
英文摘要	Nitrogen-doped graphene was demonstrated as an efficient and alternative metal-free electrocatalyst for dye-sensitized solar cells. Electrochemical measurements showed that the nitrogen-doping process can remarkably improve the catalytic activity of graphene toward triiodide reduction, lower the charge transfer resistance, and thus enhance the corresponding photovoltaic performance. Furthermore, the nitrogen doping levels ranging from 3.5 at% to 18 at%, as well as the nitrogen states (including pyrrolic, pyridinic and quaternary configurations) in graphene, were controlled to interpret the roles of graphene structure in catalytic activity and device performance. The results suggested that the nitrogen states, rather than the total N content, have a significant effect on the catalytic activity. Both pyridinic and quaternary nitrogen states can provide active sites for promoting triiodide reduction reaction, probably due to the shift in redox potential and the lowered adsorption energy.; Chemistry, Multidisciplinary; Energy & Fuels; Engineering, Chemical; Environmental Sciences; SCI(E); EI; 0; ARTICLE; 11; 3356-3362; 6
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/150703]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Hou, Shaocong,Cai, Xin,Wu, Hongwei,et al. Nitrogen-doped graphene for dye-sensitized solar cells and the role of nitrogen states in triiodide reduction[J]. energy environmental science,2013.
APA	Hou, Shaocong.,Cai, Xin.,Wu, Hongwei.,Yu, Xiao.,Peng, Ming.,...&Zou, Dechun.(2013).Nitrogen-doped graphene for dye-sensitized solar cells and the role of nitrogen states in triiodide reduction.energy environmental science.
MLA	Hou, Shaocong,et al."Nitrogen-doped graphene for dye-sensitized solar cells and the role of nitrogen states in triiodide reduction".energy environmental science (2013).