Morphology-controlled growth of NiCo2O4 ternary oxides and their application in dye-sensitized solar cells as counter electrodes

被引：26
作者：
Du, Feng [1 ]
Yang, Qun [1 ]
Qin, Tianze [1 ]
Li, Guang [1 ,2 ,3 ]
机构：
[1] Anhui Univ, Sch Phys & Mat Sci, Hefei 230601, Peoples R China
[2] Anhui Key Lab Informat Mat & Devices, Hefei 230601, Peoples R China
[3] State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
来源：
SOLAR ENERGY | 2017年 / 146卷
基金：
中国国家自然科学基金;
关键词：
NiCo2O4; Controlled synthesis; Counter electrode; DSSCs; LOW-COST; PERFORMANCE; GRAPHENE; CARBON; MICROSPHERES; NANOCRYSTALS; EFFICIENCY; CATALYSTS;
D O I：
10.1016/j.solener.2017.02.025
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
In this article, ternary oxides NiCo2O4 with morphologies of nanosheets, nanorods and nanoflowers have been synthesized by the thermal treatment of the precursors which were fabricated via a hydrothermal process. The materials were then used as counter electrodes (CEs) in dye-sensitized solar cells (DSSCs). The DSSCs equipped with NiCo2O4 nanoflowers CE achieved excellent power conversion efficiency (PCE) of 8.48%, which is higher than that of counter parts of NiCo2O4 nanosheets (3.57%), NiCo2O4 nanorods (6.84%) and Pt (8.11%) CEs. Transmission electron microscopy image shows that the NiCo2O4 nanoflowers have the best porous 3-dimensional spatial structure. This study offers a self-assembled synthetic route to prepare NiCo2O4 nanoflowers. The unique structure exhibits high efficient performance and excellent catalytic activity, which may open a new window to use ternary oxides for greatly extending potential applications in dye-sensitized solar cells and other related fields. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：125 / 130
页数：6
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