Synthesis of cose2/rgo composites and its application as a counter electrode for dye-sensitized solar cells

Yohan Ko; Wooyeol Choi; Youbin Kim; Chanyong Lee; Yongseok Jun; Junhee Kim

doi:10.33961/jecst.2019.00052

Synthesis of cose₂/rgo composites and its application as a counter electrode for dye-sensitized solar cells

Yohan Ko, Wooyeol Choi, Youbin Kim, Chanyong Lee, Yongseok Jun, Junhee Kim

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

10 Citations (Scopus)

Abstract

In this study, cobalt diselenide (CoSe₂) and the composites (CoSe2@RGO) of CoSe₂ and reduced graphene oxide (RGO) were synthesized by a facile hydrothermal reaction using cobalt ions and selenide source with or without graphene oxide (GO). The formation of CoSe₂@RGO composites was identified by analysis with X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy and scanning electron microscopy (SEM). Electrochemical analyses demonstrated that the CoSe₂@RGO composites have excellent catalytic activity for the reduction of I_3-, possibly indicating a synergetic effect of CoSe₂ and RGO. As a consequence, the CoSe₂@RGO composites were applied as a counter electrode in DSSC for the reduction of redox couple electrolyte, and exhibiting the comparable power conversion efficiency (7.01%) to the rare metal platinum (Pt) based photovoltaic device (6.77%).

Original language	English
Pages (from-to)	313-320
Number of pages	8
Journal	Journal of Electrochemical Science and Technology
Volume	10
Issue number	3
DOIs	https://doi.org/10.33961/jecst.2019.00052
Publication status	Published - 2019 Sept

Bibliographical note

Funding Information:
This research was supported by National Research Foundation of Korea, 2015M1A2A2056829, 2018M1A2A2058204, First-Mover Program for Accelerating Disruptive Technology Development (NRF-2018M3C1B9088457), Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry and Energy (MOTIE, 20194010201900) and Korea Institute for Advancement of Technology (KIAT, N0002431).

Publisher Copyright:
© 2019, Korean Electrochemical Society. All rights reserved.

Keywords

Alternative Catalyst
CoSe
Counter Electrode
DSSCs
Metal Chalcogenide

ASJC Scopus subject areas

Electrochemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.33961/jecst.2019.00052

Cite this

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title = "Synthesis of cose2/rgo composites and its application as a counter electrode for dye-sensitized solar cells",

abstract = "In this study, cobalt diselenide (CoSe2) and the composites (CoSe2@RGO) of CoSe2 and reduced graphene oxide (RGO) were synthesized by a facile hydrothermal reaction using cobalt ions and selenide source with or without graphene oxide (GO). The formation of CoSe2@RGO composites was identified by analysis with X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy and scanning electron microscopy (SEM). Electrochemical analyses demonstrated that the CoSe2@RGO composites have excellent catalytic activity for the reduction of I3-, possibly indicating a synergetic effect of CoSe2 and RGO. As a consequence, the CoSe2@RGO composites were applied as a counter electrode in DSSC for the reduction of redox couple electrolyte, and exhibiting the comparable power conversion efficiency (7.01%) to the rare metal platinum (Pt) based photovoltaic device (6.77%).",

keywords = "Alternative Catalyst, CoSe, Counter Electrode, DSSCs, Metal Chalcogenide",

author = "Yohan Ko and Wooyeol Choi and Youbin Kim and Chanyong Lee and Yongseok Jun and Junhee Kim",

note = "Funding Information: This research was supported by National Research Foundation of Korea, 2015M1A2A2056829, 2018M1A2A2058204, First-Mover Program for Accelerating Disruptive Technology Development (NRF-2018M3C1B9088457), Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry and Energy (MOTIE, 20194010201900) and Korea Institute for Advancement of Technology (KIAT, N0002431). Publisher Copyright: {\textcopyright} 2019, Korean Electrochemical Society. All rights reserved.",

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language = "English",

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T1 - Synthesis of cose2/rgo composites and its application as a counter electrode for dye-sensitized solar cells

AU - Ko, Yohan

AU - Choi, Wooyeol

AU - Kim, Youbin

AU - Lee, Chanyong

AU - Jun, Yongseok

AU - Kim, Junhee

N1 - Funding Information: This research was supported by National Research Foundation of Korea, 2015M1A2A2056829, 2018M1A2A2058204, First-Mover Program for Accelerating Disruptive Technology Development (NRF-2018M3C1B9088457), Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry and Energy (MOTIE, 20194010201900) and Korea Institute for Advancement of Technology (KIAT, N0002431). Publisher Copyright: © 2019, Korean Electrochemical Society. All rights reserved.

PY - 2019/9

Y1 - 2019/9

N2 - In this study, cobalt diselenide (CoSe2) and the composites (CoSe2@RGO) of CoSe2 and reduced graphene oxide (RGO) were synthesized by a facile hydrothermal reaction using cobalt ions and selenide source with or without graphene oxide (GO). The formation of CoSe2@RGO composites was identified by analysis with X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy and scanning electron microscopy (SEM). Electrochemical analyses demonstrated that the CoSe2@RGO composites have excellent catalytic activity for the reduction of I3-, possibly indicating a synergetic effect of CoSe2 and RGO. As a consequence, the CoSe2@RGO composites were applied as a counter electrode in DSSC for the reduction of redox couple electrolyte, and exhibiting the comparable power conversion efficiency (7.01%) to the rare metal platinum (Pt) based photovoltaic device (6.77%).

AB - In this study, cobalt diselenide (CoSe2) and the composites (CoSe2@RGO) of CoSe2 and reduced graphene oxide (RGO) were synthesized by a facile hydrothermal reaction using cobalt ions and selenide source with or without graphene oxide (GO). The formation of CoSe2@RGO composites was identified by analysis with X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy and scanning electron microscopy (SEM). Electrochemical analyses demonstrated that the CoSe2@RGO composites have excellent catalytic activity for the reduction of I3-, possibly indicating a synergetic effect of CoSe2 and RGO. As a consequence, the CoSe2@RGO composites were applied as a counter electrode in DSSC for the reduction of redox couple electrolyte, and exhibiting the comparable power conversion efficiency (7.01%) to the rare metal platinum (Pt) based photovoltaic device (6.77%).

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