Synthesis of CoSe2/RGO Composites and Its Application as a Counter Electrode for Dye-Sensitized Solar Cells
- Authors
- Ko, Yohan; Choi, Wooyeol; Kim, Youbin; Lee, Chanyong; Jun, Yongseok; Kim, Junhee
- Issue Date
- 9월-2019
- Publisher
- KOREAN ELECTROCHEMISTRY SOC
- Keywords
- CoSe2; Alternative Catalyst; DSSCs; Counter Electrode; Metal Chalcogenide
- Citation
- JOURNAL OF ELECTROCHEMICAL SCIENCE AND TECHNOLOGY, v.10, no.3, pp.313 - 320
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF ELECTROCHEMICAL SCIENCE AND TECHNOLOGY
- Volume
- 10
- Number
- 3
- Start Page
- 313
- End Page
- 320
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/63034
- DOI
- 10.33961/jecst.2019.00052
- ISSN
- 2093-8551
- 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%).
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Collections - Graduate School of Energy and Environment (KU-KIST GREEN SCHOOL) > Department of Energy and Environment > 1. Journal Articles
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