Pt-decorated SnO 2 nanotubes prepared directly on a conducting substrate and their application in solar energy conversion using a solid polymer electrolyte

Jin Kyu Kim, Dong Jun Kim, Chang Soo Lee, Hyung Hee Cho, Jong Hak Kim

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2 Citations (Scopus)

Abstract

We report the electrostatic decoration of Pt nanoparticles on SnO 2 nanotubes (ST) directly prepared on a conducting substrate and high electrocatalytic activities of the resulting materials. A pre-coating of poly(vinyl acetate) (PVAc) is the key for the direct uniform deposition of the ST, which serves dual functions as a fast electron transport path as well as a physical support for Pt nanoparticles. The self-assembly of Pt nanoparticles on the ST is based on electrostatic interaction between the Pt cations and negatively charged ST surface. A dip-coating method leads to homogeneous decoration of well-connected Pt nanoparticles with a larger surface area. Solar energy conversion devices with a solid polymer electrolyte are fabricated using Pt on ST as the electrocatalyst for the reduction of I 3 to I . The Pt dip-coated ST shows a photovoltaic efficiency of 5.07%, which is higher than those of Pt spin-coated ST (4.88%) and Pt spin-coated on the substrate without ST (4.59%). An increase in the Pt concentration leads to further improvement in the efficiency up to 5.51%, which is a moderate value for solid electrolyte devices. The improved performance is attributed to the decreased electron transfer resistance and increased surface area of the electrode.

Original languageEnglish
Pages (from-to)9-20
Number of pages12
JournalApplied Surface Science
Volume450
DOIs
Publication statusPublished - 2018 Aug 30

Fingerprint

solar energy conversion
Energy conversion
Solar energy
Nanotubes
Electrolytes
nanotubes
Polymers
electrolytes
Nanoparticles
conduction
nanoparticles
polymers
Substrates
electrostatics
Coatings
electrocatalysts
Electrocatalysts
Solid electrolytes
solid electrolytes
Coulomb interactions

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

Cite this

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title = "Pt-decorated SnO 2 nanotubes prepared directly on a conducting substrate and their application in solar energy conversion using a solid polymer electrolyte",
abstract = "We report the electrostatic decoration of Pt nanoparticles on SnO 2 nanotubes (ST) directly prepared on a conducting substrate and high electrocatalytic activities of the resulting materials. A pre-coating of poly(vinyl acetate) (PVAc) is the key for the direct uniform deposition of the ST, which serves dual functions as a fast electron transport path as well as a physical support for Pt nanoparticles. The self-assembly of Pt nanoparticles on the ST is based on electrostatic interaction between the Pt cations and negatively charged ST surface. A dip-coating method leads to homogeneous decoration of well-connected Pt nanoparticles with a larger surface area. Solar energy conversion devices with a solid polymer electrolyte are fabricated using Pt on ST as the electrocatalyst for the reduction of I 3 − to I − . The Pt dip-coated ST shows a photovoltaic efficiency of 5.07{\%}, which is higher than those of Pt spin-coated ST (4.88{\%}) and Pt spin-coated on the substrate without ST (4.59{\%}). An increase in the Pt concentration leads to further improvement in the efficiency up to 5.51{\%}, which is a moderate value for solid electrolyte devices. The improved performance is attributed to the decreased electron transfer resistance and increased surface area of the electrode.",
author = "Kim, {Jin Kyu} and Kim, {Dong Jun} and Lee, {Chang Soo} and Cho, {Hyung Hee} and Kim, {Jong Hak}",
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T1 - Pt-decorated SnO 2 nanotubes prepared directly on a conducting substrate and their application in solar energy conversion using a solid polymer electrolyte

AU - Kim, Jin Kyu

AU - Kim, Dong Jun

AU - Lee, Chang Soo

AU - Cho, Hyung Hee

AU - Kim, Jong Hak

PY - 2018/8/30

Y1 - 2018/8/30

N2 - We report the electrostatic decoration of Pt nanoparticles on SnO 2 nanotubes (ST) directly prepared on a conducting substrate and high electrocatalytic activities of the resulting materials. A pre-coating of poly(vinyl acetate) (PVAc) is the key for the direct uniform deposition of the ST, which serves dual functions as a fast electron transport path as well as a physical support for Pt nanoparticles. The self-assembly of Pt nanoparticles on the ST is based on electrostatic interaction between the Pt cations and negatively charged ST surface. A dip-coating method leads to homogeneous decoration of well-connected Pt nanoparticles with a larger surface area. Solar energy conversion devices with a solid polymer electrolyte are fabricated using Pt on ST as the electrocatalyst for the reduction of I 3 − to I − . The Pt dip-coated ST shows a photovoltaic efficiency of 5.07%, which is higher than those of Pt spin-coated ST (4.88%) and Pt spin-coated on the substrate without ST (4.59%). An increase in the Pt concentration leads to further improvement in the efficiency up to 5.51%, which is a moderate value for solid electrolyte devices. The improved performance is attributed to the decreased electron transfer resistance and increased surface area of the electrode.

AB - We report the electrostatic decoration of Pt nanoparticles on SnO 2 nanotubes (ST) directly prepared on a conducting substrate and high electrocatalytic activities of the resulting materials. A pre-coating of poly(vinyl acetate) (PVAc) is the key for the direct uniform deposition of the ST, which serves dual functions as a fast electron transport path as well as a physical support for Pt nanoparticles. The self-assembly of Pt nanoparticles on the ST is based on electrostatic interaction between the Pt cations and negatively charged ST surface. A dip-coating method leads to homogeneous decoration of well-connected Pt nanoparticles with a larger surface area. Solar energy conversion devices with a solid polymer electrolyte are fabricated using Pt on ST as the electrocatalyst for the reduction of I 3 − to I − . The Pt dip-coated ST shows a photovoltaic efficiency of 5.07%, which is higher than those of Pt spin-coated ST (4.88%) and Pt spin-coated on the substrate without ST (4.59%). An increase in the Pt concentration leads to further improvement in the efficiency up to 5.51%, which is a moderate value for solid electrolyte devices. The improved performance is attributed to the decreased electron transfer resistance and increased surface area of the electrode.

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