文献类型：期刊文献

英文题名：CuxS nanoparticle@carbon nanorod composites prepared from metal-organic frameworks as efficient electrode catalysts for quantum dot sensitized solar cells

作者：Wang, Yuan[1];Yao, Mingshui[2];Zhao, Lianjing[1];Wang, Wei[1];Xue, Weinan[1];Li, Yan[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai Key Lab Funct Mat Chem, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Fujian, Peoples R China

年份：2019

卷号：7

期号：5

起止页码：2210

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20190506455363);WOS:【SCI-EXPANDED(收录号:WOS:000457546000027)】；

基金：This research is supported by the National Natural Science Foundation of China (Grants 21771063 and 21801243), the State Key Research Development Program of China (Grant 2016YFA0204200), and the Fundamental Research Funds for the Central Universities in China (Grants WJ1714046 and 222201717003).

语种：英文

外文关键词：Crystalline materials - Metal nanoparticles - Nanorods - Charge transfer - Electrodes - Tin oxides - Carbon - Copper compounds - Organometallics - Polysulfides - Catalyst activity - Electrocatalysts - Nanocatalysts - Nanocomposites - Selenium compounds - Synthesis (chemical) - Zinc compounds - Indium compounds - Semiconductor quantum dots

摘要：The development of polysulfide reduction electrocatalysts with abundant active sites, high conductivity and good stability is vital to the fabrication of quantum dot sensitized solar cells (QDSCs) but is challenging. Herein, we report a convenient approach for the synthesis of Cu nanoparticle@carbon nanorod (Cu@CNR) composites by the direct pyrolysis of HKUST-1 precursors at temperatures above 1000 degrees C. The Cu@CNR composite whose carbon nanorods (CNRs) are encased with Cu nanoparticles (Cu NPs) exhibits superior catalytic activity towards polysulfide reduction in QDSCs, which might be ascribed to the abundant CuxS active sites derived from Cu NPs and the excellent charge transfer capability of graphitized CNRs. Benefiting from the encasement in CNRs, the dissociation of CuxS from counter electrodes (CEs) is effectively suppressed. When Cu@CNR composites deposited on F-doped tin oxide glass were used as CEs, a champion power conversion efficiency of 9.50% (J(sc) = 26.50 mA cm(-2), V-oc = 0.628 V, and FF = 0.573) under one sun illumination was observed with Zn-Cu-In-Se QD sensitizers and polysulfide electrolyte.