Pompon-like NiCo_(2)O_(4) nanospheres:a potential candidate for the counter electrode in quantum dot-sensitized solar cells

作     者：Qiu Zhang Ting-Ting Zhang Feng-Yan Li Lin Xu 

作者机构：Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of EducationFaculty of ChemistryNortheast Normal UniversityChangchun 130024China 

出 版 物：《钨科技(英文)》 (Tungsten)

年 卷 期：2023年第5卷第2期

页      面：235-246页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：financially supported by the Natural Science Foundation of China(Grant Nos.22071018 and 21671035) 

主　　题：QDSSCs Counter electrodes NiCo_(2)O_(4) Cu_(2)S 

摘      要：To find a novel counter electrode(CE)material for quantum dot-sensitized solar cells(QDSSCs),pompon-like NiCo_(2)O_(4) nanospheres are synthesized by a facile solvothermal and post-calcination method and we attempt to apply it as a CE material for QDS *** catalytic performance of NiCo_(2)O_(4) counter electrode is investigated in detail through electrochemical impedance spectroscopy,Tafel test and cyclic *** catalytic activity of NiCo_(2)O_(4) CE is superior to that of nanoflower-like Cu2S CE and traditional Cu2S/brass CE,which is mainly attributed to the large specific surface area,outstanding electrical conductivity of bimetallic oxides and the synergistic promotion effect of metals with different valence *** standard sunlight(air mass AM 1.5G 100 mW·cm^(-2)),the CdS/CdSe/ZnS-sensitized solar cell assembled with NiCo_(2)O_(4) CE achieved a photoelectric conversion efficiency of 5.55%,with a short current density of 22.49 mA·cm^(-2),an open circuit voltage of 0.574 V,and a fill factor of 0.43,which is slightly higher than the QDSSCs with nanoflower-like Cu_(2)S CE(4.75%)and traditional Cu_(2)S/brass CE(4.69%).This research provides ideas for discovering innovative and efficient CE materials for QDSSCs.