A promising hybrid graphite counter electrode doped with fumed silica nano-spacers for efficient quasi-solid state dye sensitized solar cells

Naveed Mengal, Alvira Ayoub Arbab, Anam Ali Memon, Iftikhar Ali Sahito, Sung Hoon Jeong

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Preparation of low-cost electrocatalytic counter electrode (CE) at low temperature is desired in the fabrication of photo-electrochemical quasi-solid state dye-sensitized solar cell (Qs-DSSC). We present facile doping of fumed silica (SiO2) as mesoporous nano-spacers in cationically functionalized graphite network and its synthesis into an electrically conductive hybrid paste for Qs-DSSC CEs. Polyethylene oxide (3%) based electrolyte solution is used as a quasi-solid gel electrolyte. With an optimized quantity of fumed silica nano-spacers (10%), an increase of 53.6% is achieved in power conversion efficiency (PCE) compared to bare cationised graphite coated CE. Our suggested Si@G 10% CE demonstrates commendable power conversion efficiency of 6.42% compared to 7.32% with expensive platinum (Pt) based Qs-DSSC. It exhibits a low charge transfer resistance (RCT) of 0.61 Ω cm2, owing to the improved interconnection, formation of the porous structure, and enhanced mobility of electrolyte ions. The cyclic voltammetry (CV) shows excellent electro-catalytic activity towards the I/I3 redox couple and it is stable up to 50 cycles at a scan rate of 10 mV s−1. The facile synthesis route, excellent electro-catalytic activity, appreciable stability, and considerable photovoltaic performance makes Si@G 10% based CE a promising candidate for Qs-DSSC fabrication.

Original languageEnglish
Pages (from-to)246-255
Number of pages10
JournalElectrochimica Acta
Volume261
DOIs
StatePublished - 2018 Jan 20

Fingerprint

Graphite
Silicon Dioxide
Silica
Electrodes
Electrolytes
Conversion efficiency
Catalyst activity
Fabrication
Ointments
Polyethylene oxides
Platinum
Cyclic voltammetry
Charge transfer
Gels
Doping (additives)
Dye-sensitized solar cells
Ions
Costs
Temperature

Keywords

  • Dye sensitized solar cell
  • Enzymatic functionalization
  • Fumed silica
  • Graphite
  • Polymer electrolyte

Cite this

@article{c8a0ed4a4f864c6db02a7a93a997c0ea,
title = "A promising hybrid graphite counter electrode doped with fumed silica nano-spacers for efficient quasi-solid state dye sensitized solar cells",
abstract = "Preparation of low-cost electrocatalytic counter electrode (CE) at low temperature is desired in the fabrication of photo-electrochemical quasi-solid state dye-sensitized solar cell (Qs-DSSC). We present facile doping of fumed silica (SiO2) as mesoporous nano-spacers in cationically functionalized graphite network and its synthesis into an electrically conductive hybrid paste for Qs-DSSC CEs. Polyethylene oxide (3{\%}) based electrolyte solution is used as a quasi-solid gel electrolyte. With an optimized quantity of fumed silica nano-spacers (10{\%}), an increase of 53.6{\%} is achieved in power conversion efficiency (PCE) compared to bare cationised graphite coated CE. Our suggested Si@G 10{\%} CE demonstrates commendable power conversion efficiency of 6.42{\%} compared to 7.32{\%} with expensive platinum (Pt) based Qs-DSSC. It exhibits a low charge transfer resistance (RCT) of 0.61 Ω cm2, owing to the improved interconnection, formation of the porous structure, and enhanced mobility of electrolyte ions. The cyclic voltammetry (CV) shows excellent electro-catalytic activity towards the I−/I3 − redox couple and it is stable up to 50 cycles at a scan rate of 10 mV s−1. The facile synthesis route, excellent electro-catalytic activity, appreciable stability, and considerable photovoltaic performance makes Si@G 10{\%} based CE a promising candidate for Qs-DSSC fabrication.",
keywords = "Dye sensitized solar cell, Enzymatic functionalization, Fumed silica, Graphite, Polymer electrolyte",
author = "Naveed Mengal and Arbab, {Alvira Ayoub} and Memon, {Anam Ali} and Sahito, {Iftikhar Ali} and Jeong, {Sung Hoon}",
year = "2018",
month = "1",
day = "20",
doi = "10.1016/j.electacta.2017.12.109",
language = "English",
volume = "261",
pages = "246--255",
journal = "Electrochimica Acta",
issn = "0013-4686",

}

A promising hybrid graphite counter electrode doped with fumed silica nano-spacers for efficient quasi-solid state dye sensitized solar cells. / Mengal, Naveed; Arbab, Alvira Ayoub; Memon, Anam Ali; Sahito, Iftikhar Ali; Jeong, Sung Hoon.

In: Electrochimica Acta, Vol. 261, 20.01.2018, p. 246-255.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A promising hybrid graphite counter electrode doped with fumed silica nano-spacers for efficient quasi-solid state dye sensitized solar cells

AU - Mengal, Naveed

AU - Arbab, Alvira Ayoub

AU - Memon, Anam Ali

AU - Sahito, Iftikhar Ali

AU - Jeong, Sung Hoon

PY - 2018/1/20

Y1 - 2018/1/20

N2 - Preparation of low-cost electrocatalytic counter electrode (CE) at low temperature is desired in the fabrication of photo-electrochemical quasi-solid state dye-sensitized solar cell (Qs-DSSC). We present facile doping of fumed silica (SiO2) as mesoporous nano-spacers in cationically functionalized graphite network and its synthesis into an electrically conductive hybrid paste for Qs-DSSC CEs. Polyethylene oxide (3%) based electrolyte solution is used as a quasi-solid gel electrolyte. With an optimized quantity of fumed silica nano-spacers (10%), an increase of 53.6% is achieved in power conversion efficiency (PCE) compared to bare cationised graphite coated CE. Our suggested Si@G 10% CE demonstrates commendable power conversion efficiency of 6.42% compared to 7.32% with expensive platinum (Pt) based Qs-DSSC. It exhibits a low charge transfer resistance (RCT) of 0.61 Ω cm2, owing to the improved interconnection, formation of the porous structure, and enhanced mobility of electrolyte ions. The cyclic voltammetry (CV) shows excellent electro-catalytic activity towards the I−/I3 − redox couple and it is stable up to 50 cycles at a scan rate of 10 mV s−1. The facile synthesis route, excellent electro-catalytic activity, appreciable stability, and considerable photovoltaic performance makes Si@G 10% based CE a promising candidate for Qs-DSSC fabrication.

AB - Preparation of low-cost electrocatalytic counter electrode (CE) at low temperature is desired in the fabrication of photo-electrochemical quasi-solid state dye-sensitized solar cell (Qs-DSSC). We present facile doping of fumed silica (SiO2) as mesoporous nano-spacers in cationically functionalized graphite network and its synthesis into an electrically conductive hybrid paste for Qs-DSSC CEs. Polyethylene oxide (3%) based electrolyte solution is used as a quasi-solid gel electrolyte. With an optimized quantity of fumed silica nano-spacers (10%), an increase of 53.6% is achieved in power conversion efficiency (PCE) compared to bare cationised graphite coated CE. Our suggested Si@G 10% CE demonstrates commendable power conversion efficiency of 6.42% compared to 7.32% with expensive platinum (Pt) based Qs-DSSC. It exhibits a low charge transfer resistance (RCT) of 0.61 Ω cm2, owing to the improved interconnection, formation of the porous structure, and enhanced mobility of electrolyte ions. The cyclic voltammetry (CV) shows excellent electro-catalytic activity towards the I−/I3 − redox couple and it is stable up to 50 cycles at a scan rate of 10 mV s−1. The facile synthesis route, excellent electro-catalytic activity, appreciable stability, and considerable photovoltaic performance makes Si@G 10% based CE a promising candidate for Qs-DSSC fabrication.

KW - Dye sensitized solar cell

KW - Enzymatic functionalization

KW - Fumed silica

KW - Graphite

KW - Polymer electrolyte

UR - http://www.scopus.com/inward/record.url?scp=85039450539&partnerID=8YFLogxK

U2 - 10.1016/j.electacta.2017.12.109

DO - 10.1016/j.electacta.2017.12.109

M3 - Article

AN - SCOPUS:85039450539

VL - 261

SP - 246

EP - 255

JO - Electrochimica Acta

JF - Electrochimica Acta

SN - 0013-4686

ER -