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

4 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 Sep

Keywords

Alternative Catalyst
CoSe
Counter Electrode
DSSCs
Metal Chalcogenide

ASJC Scopus subject areas

Electrochemistry

UN SDGs

This output contributes to the following Sustainable Development Goal(s)

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@article{8eb4bf60ea5249f58d2229b2abbfb10f,

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.",

year = "2019",

month = sep,

doi = "10.33961/jecst.2019.00052",

language = "English",

volume = "10",

pages = "313--320",

journal = "Journal of Electrochemical Science and Technology",

issn = "2093-8551",

publisher = "The Korean Electrochemical Society",

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TY - JOUR

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%).

KW - Alternative Catalyst

KW - CoSe

KW - Counter Electrode

KW - DSSCs

KW - Metal Chalcogenide

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