Development of polypyrrole/graphene (PPY/graphene) based electrocatalyst for platinum free dye-sensitized solar cells (DSSCs)

•PPY/Graphene Nanocomposites were prepared by in-situ polymerization method.•Nanocomposites were employed as electrocatalysts for the applications of DSSCs.•SEM analysis of PPY/GR shows the well adhesion between the constituents of nanocomposites.•The concentration of graphene in composites effect t...

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Bibliographic Details
Published in:Materials letters 2022-08, Vol.320, p.132331, Article 132331
Main Authors: Mahmood Khan, Irfan, Nazar, Rabia, Mehmood, Umer
Format: Article
Language:English
Subjects:
Counter electrode
Deionization
DSSC
Dye-sensitized solar cells
Dyes
Electrical measurement
Electrocatalysts
Energy conversion
Graphene
Materials science
Nanocomposites
Platinum
Polymerization
Polymers
Polypyrroles
Solar energy materials
Titanium dioxide
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Summary:•PPY/Graphene Nanocomposites were prepared by in-situ polymerization method.•Nanocomposites were employed as electrocatalysts for the applications of DSSCs.•SEM analysis of PPY/GR shows the well adhesion between the constituents of nanocomposites.•The concentration of graphene in composites effect the performance of DSSCs. The purpose of this study was to fabricatePlatinum-free counter electrode (CE) materials for energy conversion devices. Initially, pyrrole was polymerized overnight in deionized water followed by 72 h of drying at 60 °C to obtain powdered PPY. Similarly, in-situ polymerization of pyrrole yielded PPY/graphene nanocomposite with variable graphene concentrations (2–8 wt%). Powdered samples were characterizedby SEM, XRD, and FTIR for compositional and morphological analysis. CEs of dye-sensitized solar cells (DSSCs) were made with PPY and PPY/graphene composites. The dye-sensitized TiO2 photoanodes were connected to CEs to carry out current–voltage measurements usingKeithley Solar Simulator. The DSSCs with PPY/4 %graphene CE showedthe highest efficiency (3.06%).
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2022.132331