In situ grown hierarchical NiCo2O4@MnMoO4 core-shell nanoarrays on carbon cloth as high-performance counter electrode for dye-sensitized solar cells

被引：15
作者：
Chen, Xiaobo [1 ]
Zhang, Yang [1 ]
Cai, Jianghao [1 ]
Zhu, Jiangyue [1 ]
机构：
[1] Yancheng Teachers Univ, Control Engn Res Ctr, Yancheng 224051, Peoples R China
来源：
SOLAR ENERGY | 2021年 / 227卷
关键词：
Counter electrode; Core-shell structure; Carbon cloth; DSSCs; LOW-COST; OXYGEN REDUCTION; FACILE SYNTHESIS; GRAPHENE OXIDE; EFFICIENT; COMPOSITE; ARRAYS; ELECTROCATALYSTS; NANOSTRUCTURES; NANOWIRES;
D O I：
10.1016/j.solener.2021.09.052
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：
Carbon cloth (CC) supported core-shell NiCo2O4@MnMoO4 nanoarrays composite is successfully synthesized by two-step hydrothermal method, and used as binder-free counter electrode (CE) for dye-sensitized solar cells (DSSCs). In comparison with the NiCo2O4/CC, MnMoO4/CC, CC and Pt CEs, the NiCo2O4@MnMoO4/CC CE exhibits the significantly improved electrochemical performance. And the improved electrochemical performance can be attributed to the contribution from CC combination outer-sphere MnMoO4 nanosheet and inner sphere NiCo2O4 nanowires array, which offer a large electrochemical surface area, good electrochemical activity to iodide/triiodide couple, and lower charge-transfer and series resistances. The DSSCs device assembled with core-shell composite NiCo2O4@MnMoO4/CC CE achieved excellent power conversion efficiency of 11.87%, which is higher than that of counter parts of NiCo2O4/CC (10.97%), MnMoO4/CC (11.08%), CC (4.84%) and Pt (8.55%) CEs. Also, the NiCo2O4@MnMoO4/CC based device remains 90.9% efficiency up to 10 days under ambient conditions. Therefore, the NiCo2O4@MnMoO4/CC composite with unique structure can be further developed as an efficient and cost-effective metal oxides electrocatalysts in DSSCs and other related fields.
引用
收藏
页码：616 / 624
页数：9
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