Design Principle and Loss Engineering for Photovoltaic-Electrolysis Cell System

Woo Je Chang; Kyung Hwan Lee; Heonjin Ha; Kyoungsuk Jin; Gunho Kim; Sun Tae Hwang; Heon Min Lee; Seh Won Ahn; Wonki Yoon; Hongmin Seo; Jung Sug Hong; Yoo Kyung Go; Jung Ik Ha; Ki Tae Nam

doi:10.1021/acsomega.7b00012

Design Principle and Loss Engineering for Photovoltaic-Electrolysis Cell System

Woo Je Chang, Kyung Hwan Lee, Heonjin Ha, Kyoungsuk Jin, Gunho Kim, Sun Tae Hwang, Heon Min Lee, Seh Won Ahn, Wonki Yoon, Hongmin Seo, Jung Sug Hong, Yoo Kyung Go, Jung Ik Ha, Ki Tae Nam

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

45 Citations (Scopus)

Abstract

The effects of exchange current density, Tafel slope, system resistance, electrode area, light intensity, and solar cell efficiency were systematically decoupled at the converter-assisted photovoltaic-water electrolysis system. This allows key determinants of overall efficiency to be identified. On the basis of this model, 26.5% single-junction GaAs solar cell was combined with a membrane-electrode-assembled electrolysis cell (EC) using the dc/dc converting technology. As a result, we have achieved a solar-to-hydrogen conversion efficiency of 20.6% on a prototype scale and demonstrated light intensity tracking optimization to maintain high efficiency. We believe that this study will provide design principles for combining solar cells, ECs, and new catalysts and can be generalized to other solar conversion chemical devices while minimizing their power loss during the conversion of electrical energy into fuel.

Original language	English
Pages (from-to)	1009-1018
Number of pages	10
Journal	ACS Omega
Volume	2
Issue number	3
DOIs	https://doi.org/10.1021/acsomega.7b00012
Publication status	Published - 2017 Mar 31
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)

UN SDGs

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

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10.1021/acsomega.7b00012

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@article{73c59cbc84744beaaf996aa6f5e6bf02,

title = "Design Principle and Loss Engineering for Photovoltaic-Electrolysis Cell System",

abstract = "The effects of exchange current density, Tafel slope, system resistance, electrode area, light intensity, and solar cell efficiency were systematically decoupled at the converter-assisted photovoltaic-water electrolysis system. This allows key determinants of overall efficiency to be identified. On the basis of this model, 26.5% single-junction GaAs solar cell was combined with a membrane-electrode-assembled electrolysis cell (EC) using the dc/dc converting technology. As a result, we have achieved a solar-to-hydrogen conversion efficiency of 20.6% on a prototype scale and demonstrated light intensity tracking optimization to maintain high efficiency. We believe that this study will provide design principles for combining solar cells, ECs, and new catalysts and can be generalized to other solar conversion chemical devices while minimizing their power loss during the conversion of electrical energy into fuel.",

author = "Chang, {Woo Je} and Lee, {Kyung Hwan} and Heonjin Ha and Kyoungsuk Jin and Gunho Kim and Hwang, {Sun Tae} and Lee, {Heon Min} and Ahn, {Seh Won} and Wonki Yoon and Hongmin Seo and Hong, {Jung Sug} and Go, {Yoo Kyung} and Ha, {Jung Ik} and Nam, {Ki Tae}",

note = "Funding Information: This research was supported by the Global Frontier R&D Program of the Center for Multiscale Energy System funded by the National Research Foundation under the Ministry of Science, ICT and Future, Korea (2012M3A6A7054855), and by the Ministry of Trade, Industry and Energy (MOTIE) under Industrial Strategic Technology Development Program, Korea (0417-2016-0019). Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",

year = "2017",

month = mar,

day = "31",

doi = "10.1021/acsomega.7b00012",

language = "English",

volume = "2",

pages = "1009--1018",

journal = "ACS Omega",

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publisher = "American Chemical Society",

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TY - JOUR

T1 - Design Principle and Loss Engineering for Photovoltaic-Electrolysis Cell System

AU - Chang, Woo Je

AU - Lee, Kyung Hwan

AU - Ha, Heonjin

AU - Jin, Kyoungsuk

AU - Kim, Gunho

AU - Hwang, Sun Tae

AU - Lee, Heon Min

AU - Ahn, Seh Won

AU - Yoon, Wonki

AU - Seo, Hongmin

AU - Hong, Jung Sug

AU - Go, Yoo Kyung

AU - Ha, Jung Ik

AU - Nam, Ki Tae

N1 - Funding Information: This research was supported by the Global Frontier R&D Program of the Center for Multiscale Energy System funded by the National Research Foundation under the Ministry of Science, ICT and Future, Korea (2012M3A6A7054855), and by the Ministry of Trade, Industry and Energy (MOTIE) under Industrial Strategic Technology Development Program, Korea (0417-2016-0019). Publisher Copyright: © 2017 American Chemical Society.

PY - 2017/3/31

Y1 - 2017/3/31

N2 - The effects of exchange current density, Tafel slope, system resistance, electrode area, light intensity, and solar cell efficiency were systematically decoupled at the converter-assisted photovoltaic-water electrolysis system. This allows key determinants of overall efficiency to be identified. On the basis of this model, 26.5% single-junction GaAs solar cell was combined with a membrane-electrode-assembled electrolysis cell (EC) using the dc/dc converting technology. As a result, we have achieved a solar-to-hydrogen conversion efficiency of 20.6% on a prototype scale and demonstrated light intensity tracking optimization to maintain high efficiency. We believe that this study will provide design principles for combining solar cells, ECs, and new catalysts and can be generalized to other solar conversion chemical devices while minimizing their power loss during the conversion of electrical energy into fuel.

AB - The effects of exchange current density, Tafel slope, system resistance, electrode area, light intensity, and solar cell efficiency were systematically decoupled at the converter-assisted photovoltaic-water electrolysis system. This allows key determinants of overall efficiency to be identified. On the basis of this model, 26.5% single-junction GaAs solar cell was combined with a membrane-electrode-assembled electrolysis cell (EC) using the dc/dc converting technology. As a result, we have achieved a solar-to-hydrogen conversion efficiency of 20.6% on a prototype scale and demonstrated light intensity tracking optimization to maintain high efficiency. We believe that this study will provide design principles for combining solar cells, ECs, and new catalysts and can be generalized to other solar conversion chemical devices while minimizing their power loss during the conversion of electrical energy into fuel.

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DO - 10.1021/acsomega.7b00012

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VL - 2

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JO - ACS Omega

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ER -

Design Principle and Loss Engineering for Photovoltaic-Electrolysis Cell System

Abstract

ASJC Scopus subject areas

UN SDGs

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