Brick Shaped Vanadium Nitride/Graphene Nanocomposite as Highly Efficient Counter Electrode Catalyst for Pt Free Dye-Sensitized Solar Cell

被引：2
作者：
Karunagaran, Jhanani Raji [1 ]
Janakiraman, Manokaran [1 ]
Mathew, Asha [1 ]
Natesan, Balasubramanian [1 ]
机构：
[1] Anna Univ, Dept Chem Engn, AC Tech Campus, Chennai 600025, Tamil Nadu, India
来源：
CHEMISTRYSELECT | 2022年 / 7卷 / 09期
关键词：
vanadium nitride; DSSC; Pt free counter electrode; graphene; electro catalyst; DOPED GRAPHENE NANOCOMPOSITES; LITHIUM STORAGE; LOW-COST; NANOSHEETS; COMPOSITE; GROWTH; TEMPERATURE; REDUCTION; FIBERS; ANODE;
D O I：
10.1002/slct.202103231
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A Platinum free hybrid counter electrode (CE) Vanadium nitride/graphene (VNGp) for dye-sensitized solar cell (DSSC) was synthesized by hydrothermal method. The surface morphology and chemical composition of the as-prepared VNGp composite were analyzed by X-ray diffraction (XRD) analysis, Raman spectroscopy, high-resolution electron transmission microscopy (HR-TEM), and cyclic voltammetry (CV). The VNGp hybrid counter electrode displayed an adsorption-controlled process towards the (I-/I-3(-)) redox couple at CE/electrolyte interface and the value was calculated to be 3.16x10(-9) mol/s by varying the scan rate. The exchange current density (J(o)) was calculated as 6.59 mA/cm(2) from the Tafel slope. The VNGp hybrid counter shows a maximum fill factor (FF) of 66.28 with high efficacy of 8.15 % under the illumination of 100 mW/cm(2) as compared to the Pt CE for DSSC.
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页数：6
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