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

	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
发表期刊	SOLAR ENERGY
ISSN	0038-092X
	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
研究领域	Energy & Fuels
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
作者部门	中科院烟台海岸带研究所知识产出
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%).
文章类型	Article
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
收录类别	SCI
语种	英语
关键词[WOS]	FREE COUNTER ELECTRODE ; IN-SITU GROWTH ; HIGH-PERFORMANCE ; LOW-COST ; CARBON NANOTUBES ; COMPOSITE FILM ; GRAPHENE ; NANOSHEETS ; SELENIDES ; CATALYSTS
研究领域[WOS]	Energy & Fuels
WOS记录号	WOS:000457663800027
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/24626
专题	中国科学院烟台海岸带研究所知识产出
作者单位	1.Yangzhou Univ, Sch Chem & Chem Engn, Yangzhou 225002, Jiangsu, Peoples R China; 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, 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.

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