Hollow hierarchical structure Co0.85Se as efficient electrocatalyst for the triiodide reduction in dye-sensitized solar cells

doi:10.1016/j.solener.2018.12.031

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	Hollow hierarchical structure Co0.85Se as efficient electrocatalyst for the triiodide reduction in dye-sensitized solar cells
	Zhao, Rongfang ; Tang, Dongmei ; Huan, Long ; Wu, Qianhui ; Li, Wenlong ; Zhang, Xiue ; Chen, Ming ; Diao, Guowang
刊名	SOLAR ENERGY
	2019-01-15
卷号	178 页码:241-248
关键词	Cobalt selenides Hollow hierarchical structure Triiodide reduction Electrocatalytic activity Dye-sensitized solar cells
ISSN号	0038-092X
DOI	10.1016/j.solener.2018.12.031
产权排序	[Zhao, Rongfang ; Tang, Dongmei ; Huan, Long ; Wu, Qianhui ; Li, Wenlong ; Zhang, Xiue ; Chen, Ming ; Diao, Guowang] Yangzhou Univ, Sch Chem & Chem Engn, Yangzhou 225002, Jiangsu, Peoples R China ; [Zhao, Rongfang] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
文献子类	Article
英文摘要	The exploration of nonprecious metal-based electrocatalysts with high efficiency for the triiodide reduction is critical for the practical applications of the dye-sensitized solar cells. Herein, we develop a facile one-step hydrothermal method to synthesize hollow hierarchical structure Co0.85Se. Under the methanol-water reaction system, the product named as hollow hierarchical structure Co0.85Se-M has the largest specific surface area (215.36 m(2) g(-1)) and the best crystallinity than other products obtained from other alcohol-water reaction systems. When this electrocatalyst is applied as a counter electrode for the dye-sensitized solar cells, it exhibits a small peak-to-peak separation (E-pp, 97 mV) for the reduction of I-3(-)/I- redox couple. It is found that the catalytic activity of Co0.85Se is closely dependent on the crystallinity. Moreover, the reactivity pathway is identified by density functional theory, which confirms that triiodide is reduced to iodide ion on Co0.85Se with a smaller energy barrier (similar to 0.65 eV) than on Pt (similar to 1.18 eV). Both experimental and theoretical results demonstrate Co0.85Se-M as an ideal counter electrode material for the dye-sensitized solar cells with a higher power conversion efficiency (8.76%) than Pt counter electrode (7.20%).
WOS关键词	FREE COUNTER ELECTRODE ; IN-SITU GROWTH ; HIGH-PERFORMANCE ; LOW-COST ; CARBON NANOTUBES ; COMPOSITE FILM ; GRAPHENE ; NANOSHEETS ; SELENIDES ; CATALYSTS
WOS研究方向	Energy & Fuels
语种	英语
WOS记录号	WOS:000457663800027
资助机构	National Natural Science Foundation of China [21773203] ; Natural Science Foundation of Jiangsu Province [BK20161329] ; Innovation Projects in Jiangsu Province [KYZZ16_0491] ; Jiangsu Province Fifth issue of 333 High level talents training project [BRA2016202] ; Application Research Porgram of Nantong [MS12015028] ; Priority Academic Program Development of Jiangsu Higher Education Institutions
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/24626]
专题	烟台海岸带研究所_中科院烟台海岸带研究所知识产出
作者单位	1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China 2.Yangzhou Univ, Sch Chem & Chem Engn, Yangzhou 225002, Jiangsu, Peoples R China;
推荐引用方式 GB/T 7714	Zhao, Rongfang,Tang, Dongmei,Huan, Long,et al. Hollow hierarchical structure Co0.85Se as efficient electrocatalyst for the triiodide reduction in dye-sensitized solar cells[J]. SOLAR ENERGY,2019,178:241-248.
APA	Zhao, Rongfang.,Tang, Dongmei.,Huan, Long.,Wu, Qianhui.,Li, Wenlong.,...&Diao, Guowang.(2019).Hollow hierarchical structure Co0.85Se as efficient electrocatalyst for the triiodide reduction in dye-sensitized solar cells.SOLAR ENERGY,178,241-248.
MLA	Zhao, Rongfang,et al."Hollow hierarchical structure Co0.85Se as efficient electrocatalyst for the triiodide reduction in dye-sensitized solar cells".SOLAR ENERGY 178(2019):241-248.