High-performance photoelectrochemical cells with MoS2 nanoflakes/TiO2 photoanode on 3D porous carbon spun fabric

Hyunjin Cho; Ji Yeon Kim; Dong Su Shin; Joo Song Lee; Jaeho Shim; In Ho Lee; Won Kook Choi; Namhee Kwon; Soohyung Park; Mehmet Suha Yazici; Young Jae Park; Ju Hee You; Seok Ho Seo; Donghee Park; Dong Ick Son

doi:10.1016/j.asems.2023.100088

High-performance photoelectrochemical cells with MoS₂ nanoflakes/TiO₂ photoanode on 3D porous carbon spun fabric

Hyunjin Cho, Ji Yeon Kim, Dong Su Shin, Joo Song Lee, Jaeho Shim, In Ho Lee, Won Kook Choi, Namhee Kwon, Soohyung Park, Mehmet Suha Yazici, Young Jae Park, Ju Hee You, Seok Ho Seo, Donghee Park^*, Dong Ick Son^*

^*Corresponding author for this work

Energy Institute

Research output: Contribution to journal › Article › peer-review

Abstract

A solar-driven photoelectrochemical (PEC) cell is emerging as one of the promising clean hydrogen generation systems. Engineering of semiconductor heterojunctions and surface morphologies of photoelectrodes in a PEC cell has been a primitive approach to boost its performance. This study presents that a molybdenum disulfide (MoS₂) nanoflakes photoanode on 3-dimensional (3D) porous carbon spun fabric (CSF) as a substrate effectively enhances hydrogen generations due to sufficiently enlarged surface area. MoS₂ is grown on CSFs utilizing a hydrothermal method. Among three different MoS₂ coating morphologies depending on the amount of MoS₂ precursor and hydrothermal growth time, film shape MoS₂ on CSFs had the largest surface area, exhibiting the highest photocurrent density of 26.48 mA/cm² and the highest applied bias photon-to-current efficiency (ABPE) efficiency of 5.32% at 0.43 V_RHE. Furthermore, with a two-step growth method of sputtering and a subsequent hydrothermal coating, continuous TiO₂/MoS₂ heterojunctions on a porous CSF further promoted the photoelectrochemical performances due to their optimized bandgap alignments. Enlarged surface area, enhanced charge transfer, and utilization of visible light enable a highly efficient MoS₂/TiO₂/CSF photoanode with a photocurrent density of 33.81 mA/cm² and an ABPE of 6.97 % at 0.87 V_RHE. The hydrogen generation amount of the PEC cell with MoS₂/TiO₂/CSF photoanode is 225.4 μmol/L after light irradiation of 60 s.

Original language	English
Article number	100088
Journal	Advanced Sensor and Energy Materials
Volume	3
Issue number	1
DOIs	https://doi.org/10.1016/j.asems.2023.100088
Publication status	Published - Mar 2024

Bibliographical note

Publisher Copyright:
© 2023 The Author(s)

Keywords

3D porous carbon spun fabric
Conformal coating
MoS
Photoanode
Photoelectrochemical cell
TiO

Access to Document

10.1016/j.asems.2023.100088

Cite this

Cho, H., Kim, J. Y., Shin, D. S., Lee, J. S., Shim, J., Lee, I. H., Choi, W. K., Kwon, N., Park, S., Yazici, M. S., Park, Y. J., You, J. H., Seo, S. H., Park, D., & Son, D. I. (2024). High-performance photoelectrochemical cells with MoS₂ nanoflakes/TiO₂ photoanode on 3D porous carbon spun fabric. Advanced Sensor and Energy Materials, 3(1), Article 100088. https://doi.org/10.1016/j.asems.2023.100088

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title = "High-performance photoelectrochemical cells with MoS2 nanoflakes/TiO2 photoanode on 3D porous carbon spun fabric",

abstract = "A solar-driven photoelectrochemical (PEC) cell is emerging as one of the promising clean hydrogen generation systems. Engineering of semiconductor heterojunctions and surface morphologies of photoelectrodes in a PEC cell has been a primitive approach to boost its performance. This study presents that a molybdenum disulfide (MoS2) nanoflakes photoanode on 3-dimensional (3D) porous carbon spun fabric (CSF) as a substrate effectively enhances hydrogen generations due to sufficiently enlarged surface area. MoS2 is grown on CSFs utilizing a hydrothermal method. Among three different MoS2 coating morphologies depending on the amount of MoS2 precursor and hydrothermal growth time, film shape MoS2 on CSFs had the largest surface area, exhibiting the highest photocurrent density of 26.48 mA/cm2 and the highest applied bias photon-to-current efficiency (ABPE) efficiency of 5.32% at 0.43 VRHE. Furthermore, with a two-step growth method of sputtering and a subsequent hydrothermal coating, continuous TiO2/MoS2 heterojunctions on a porous CSF further promoted the photoelectrochemical performances due to their optimized bandgap alignments. Enlarged surface area, enhanced charge transfer, and utilization of visible light enable a highly efficient MoS2/TiO2/CSF photoanode with a photocurrent density of 33.81 mA/cm2 and an ABPE of 6.97 % at 0.87 VRHE. The hydrogen generation amount of the PEC cell with MoS2/TiO2/CSF photoanode is 225.4 μmol/L after light irradiation of 60 s.",

keywords = "3D porous carbon spun fabric, Conformal coating, MoS, Photoanode, Photoelectrochemical cell, TiO",

author = "Hyunjin Cho and Kim, {Ji Yeon} and Shin, {Dong Su} and Lee, {Joo Song} and Jaeho Shim and Lee, {In Ho} and Choi, {Won Kook} and Namhee Kwon and Soohyung Park and Yazici, {Mehmet Suha} and Park, {Young Jae} and You, {Ju Hee} and Seo, {Seok Ho} and Donghee Park and Son, {Dong Ick}",

note = "Publisher Copyright: {\textcopyright} 2023 The Author(s)",

year = "2024",

month = mar,

doi = "10.1016/j.asems.2023.100088",

language = "English",

volume = "3",

journal = "Advanced Sensor and Energy Materials",

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T1 - High-performance photoelectrochemical cells with MoS2 nanoflakes/TiO2 photoanode on 3D porous carbon spun fabric

AU - Cho, Hyunjin

AU - Kim, Ji Yeon

AU - Shin, Dong Su

AU - Lee, Joo Song

AU - Shim, Jaeho

AU - Lee, In Ho

AU - Choi, Won Kook

AU - Kwon, Namhee

AU - Park, Soohyung

AU - Yazici, Mehmet Suha

AU - Park, Young Jae

AU - You, Ju Hee

AU - Seo, Seok Ho

AU - Park, Donghee

AU - Son, Dong Ick

PY - 2024/3

Y1 - 2024/3

N2 - A solar-driven photoelectrochemical (PEC) cell is emerging as one of the promising clean hydrogen generation systems. Engineering of semiconductor heterojunctions and surface morphologies of photoelectrodes in a PEC cell has been a primitive approach to boost its performance. This study presents that a molybdenum disulfide (MoS2) nanoflakes photoanode on 3-dimensional (3D) porous carbon spun fabric (CSF) as a substrate effectively enhances hydrogen generations due to sufficiently enlarged surface area. MoS2 is grown on CSFs utilizing a hydrothermal method. Among three different MoS2 coating morphologies depending on the amount of MoS2 precursor and hydrothermal growth time, film shape MoS2 on CSFs had the largest surface area, exhibiting the highest photocurrent density of 26.48 mA/cm2 and the highest applied bias photon-to-current efficiency (ABPE) efficiency of 5.32% at 0.43 VRHE. Furthermore, with a two-step growth method of sputtering and a subsequent hydrothermal coating, continuous TiO2/MoS2 heterojunctions on a porous CSF further promoted the photoelectrochemical performances due to their optimized bandgap alignments. Enlarged surface area, enhanced charge transfer, and utilization of visible light enable a highly efficient MoS2/TiO2/CSF photoanode with a photocurrent density of 33.81 mA/cm2 and an ABPE of 6.97 % at 0.87 VRHE. The hydrogen generation amount of the PEC cell with MoS2/TiO2/CSF photoanode is 225.4 μmol/L after light irradiation of 60 s.

AB - A solar-driven photoelectrochemical (PEC) cell is emerging as one of the promising clean hydrogen generation systems. Engineering of semiconductor heterojunctions and surface morphologies of photoelectrodes in a PEC cell has been a primitive approach to boost its performance. This study presents that a molybdenum disulfide (MoS2) nanoflakes photoanode on 3-dimensional (3D) porous carbon spun fabric (CSF) as a substrate effectively enhances hydrogen generations due to sufficiently enlarged surface area. MoS2 is grown on CSFs utilizing a hydrothermal method. Among three different MoS2 coating morphologies depending on the amount of MoS2 precursor and hydrothermal growth time, film shape MoS2 on CSFs had the largest surface area, exhibiting the highest photocurrent density of 26.48 mA/cm2 and the highest applied bias photon-to-current efficiency (ABPE) efficiency of 5.32% at 0.43 VRHE. Furthermore, with a two-step growth method of sputtering and a subsequent hydrothermal coating, continuous TiO2/MoS2 heterojunctions on a porous CSF further promoted the photoelectrochemical performances due to their optimized bandgap alignments. Enlarged surface area, enhanced charge transfer, and utilization of visible light enable a highly efficient MoS2/TiO2/CSF photoanode with a photocurrent density of 33.81 mA/cm2 and an ABPE of 6.97 % at 0.87 VRHE. The hydrogen generation amount of the PEC cell with MoS2/TiO2/CSF photoanode is 225.4 μmol/L after light irradiation of 60 s.

KW - 3D porous carbon spun fabric

KW - Conformal coating

KW - MoS

KW - Photoanode

KW - Photoelectrochemical cell

KW - TiO

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