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Influence of earth-abundant bimetallic (Fe-Ni) nanoparticle-embedded CNFs as a low-cost counter electrode material for dye-sensitized solar cells

DSpace at IIT Bombay

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Title Influence of earth-abundant bimetallic (Fe-Ni) nanoparticle-embedded CNFs as a low-cost counter electrode material for dye-sensitized solar cells
 
Creator SARANYA, K
SUBRAMANIA, A
SIVASANKAR, N
 
Subject DOPED CARBON NANOFIBERS
LITHIUM ION BATTERIES
COMPOSITE NANOFIBERS
HIGHLY EFFICIENT
GRAPHENE
PLATINUM
ANODE
 
Description Earth-abundant bimetallic (Fe-Ni) nanoparticle-embedded carbon nanofibers (CNFs) have been prepared by electrospinning technique and used as counter electrode (CE) material for dye-sensitized solar cells (DSSC). The structural and morphological properties were explored by X-ray diffraction (XRD), Raman spectroscopy, field-emission scanning microscope (FE-SEM) and transmission electron microscope (TEM) studies. The results of cyclic voltammetry (CV), electrochemical impedance and Tafel polarization studies revealed that (Fe-Ni)-CNFs demonstrated superior electrocatalytic activity, electrochemical stability, low charge transfer resistance (R-ct) and high exchange current density for the reduction of triiodide (I-3(-)). Furthermore, it was observed that DSSC fabricated using (Fe-Ni)-CNFs as counter electrode had achieved power conversion efficiency (PCE) that is almost comparable to the same fabricated using std. Pt. This is due to the prepared CNFs' large surface area and randomly oriented, interconnected porous morphology with graphitized structure, which enhanced the contact with a large quantity of ionic liquid electrolyte, leading to a faster redox kinetics of I-3(-/I-). This study revealed that (Fe-Ni)-CNFs could be used as a low-cost and efficient counter electrode material for DSSCs.
 
Publisher ROYAL SOC CHEMISTRY
 
Date 2016-01-15T07:19:05Z
2016-01-15T07:19:05Z
2015
 
Type Article
 
Identifier RSC ADVANCES, 5(54)43611-43619
2046-2069
http://dx.doi.org/10.1039/c5ra04963f
http://dspace.library.iitb.ac.in/jspui/handle/100/18032
 
Language en