Polarization characteristics of a low catalyst loading PEM water electrolyzer operating at elevated temperature

Byung Seok Lee; Hee Young Park; Insoo Choi; Min Kyung Cho; Hyoung Juhn Kim; Sung Jong Yoo; Dirk Henkensmeier; Jin Young Kim; Suk Woo Nam; Sehkyu Park; Kwan Young Lee; Jong Hyun Jang

doi:10.1016/j.jpowsour.2015.12.139

Polarization characteristics of a low catalyst loading PEM water electrolyzer operating at elevated temperature

Byung Seok Lee, Hee Young Park, Insoo Choi, Min Kyung Cho, Hyoung Juhn Kim, Sung Jong Yoo, Dirk Henkensmeier, Jin Young Kim, Suk Woo Nam, Sehkyu Park, Kwan Young Lee, Jong Hyun Jang

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

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Abstract

The effect of temperature and pressure, and diffusion layer thickness is assessed on performance of a proton exchange membrane water electrolyzers (PEMWEs) with an ultralow iridium oxide (IrO₂) loading (0.1 mg cm^-2) anode prepared by electrodeposition and a Pt/C catalyzed cathode with a Pt loading of 0.4 mg cm^-2. Increasing pressure to 2.5 bar at 120 °C enhances the water electrolysis current, so the anode electrodeposited with 0.1 mg cm^-2 IrO₂ gives a current density of 1.79 A cm^-2 at 1.6 V, which is comparable to the conventional powder-type IrO₂ electrode with 2.0 mg cm^-2 at a temperature of 120 °C and pressure of 2.5 bar. The major factors for cell performances are rationalized in terms of overpotentials, water flow rates and thickness of diffusion layers, based on polarization behavior and ac-impedance response.

Original language	English
Pages (from-to)	127-134
Number of pages	8
Journal	Journal of Power Sources
Volume	309
DOIs	https://doi.org/10.1016/j.jpowsour.2015.12.139
Publication status	Published - 2016 Mar 31

Keywords

Electrodeposition
High temperature
Iridium oxide
Oxygen evolution reaction
Polymer electrolyte membrane water electrolyzer
Pressure

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

UN SDGs

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

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10.1016/j.jpowsour.2015.12.139

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@article{99d9d532ce174387b5fa46203f0276dc,

title = "Polarization characteristics of a low catalyst loading PEM water electrolyzer operating at elevated temperature",

abstract = "The effect of temperature and pressure, and diffusion layer thickness is assessed on performance of a proton exchange membrane water electrolyzers (PEMWEs) with an ultralow iridium oxide (IrO2) loading (0.1 mg cm-2) anode prepared by electrodeposition and a Pt/C catalyzed cathode with a Pt loading of 0.4 mg cm-2. Increasing pressure to 2.5 bar at 120 °C enhances the water electrolysis current, so the anode electrodeposited with 0.1 mg cm-2 IrO2 gives a current density of 1.79 A cm-2 at 1.6 V, which is comparable to the conventional powder-type IrO2 electrode with 2.0 mg cm-2 at a temperature of 120 °C and pressure of 2.5 bar. The major factors for cell performances are rationalized in terms of overpotentials, water flow rates and thickness of diffusion layers, based on polarization behavior and ac-impedance response.",

keywords = "Electrodeposition, High temperature, Iridium oxide, Oxygen evolution reaction, Polymer electrolyte membrane water electrolyzer, Pressure",

author = "Lee, {Byung Seok} and Park, {Hee Young} and Insoo Choi and Cho, {Min Kyung} and Kim, {Hyoung Juhn} and Yoo, {Sung Jong} and Dirk Henkensmeier and Kim, {Jin Young} and Nam, {Suk Woo} and Sehkyu Park and Lee, {Kwan Young} and Jang, {Jong Hyun}",

note = "Funding Information: This study was supported by the Korean Government through the New and Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) funded by MOTIE (No. 20143010031770 and No. 20133030011320 ), the Korea CCS R&D Center (KCRC) grant funded by MSIP (No. 2014M1A8A1049295 ), the National Research Foundation of Korea Grant funded by MSIP (2014, University-Institute cooperation program), the Global Frontier R&D Program at the Center for Multiscale Energy System funded by the National Research Foundation , MSIP (No. 2012M3A6A7054283 ). Additionally, this study was funded by KIST through the Institutional Projects ( 2E25411 and 2E25420 ). The financial support from the National Research Foundation (No. NRF-2014R1A1A2057667 ) and research grant of Kwangwoon University in 2015 are gratefully acknowledged. Publisher Copyright: {\textcopyright} 2016 Elsevier B.V. All rights reserved.",

year = "2016",

month = mar,

day = "31",

doi = "10.1016/j.jpowsour.2015.12.139",

language = "English",

volume = "309",

pages = "127--134",

journal = "Journal of Power Sources",

issn = "0378-7753",

publisher = "Elsevier",

}

TY - JOUR

T1 - Polarization characteristics of a low catalyst loading PEM water electrolyzer operating at elevated temperature

AU - Lee, Byung Seok

AU - Park, Hee Young

AU - Choi, Insoo

AU - Cho, Min Kyung

AU - Kim, Hyoung Juhn

AU - Yoo, Sung Jong

AU - Henkensmeier, Dirk

AU - Kim, Jin Young

AU - Nam, Suk Woo

AU - Park, Sehkyu

AU - Lee, Kwan Young

AU - Jang, Jong Hyun

N1 - Funding Information: This study was supported by the Korean Government through the New and Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) funded by MOTIE (No. 20143010031770 and No. 20133030011320 ), the Korea CCS R&D Center (KCRC) grant funded by MSIP (No. 2014M1A8A1049295 ), the National Research Foundation of Korea Grant funded by MSIP (2014, University-Institute cooperation program), the Global Frontier R&D Program at the Center for Multiscale Energy System funded by the National Research Foundation , MSIP (No. 2012M3A6A7054283 ). Additionally, this study was funded by KIST through the Institutional Projects ( 2E25411 and 2E25420 ). The financial support from the National Research Foundation (No. NRF-2014R1A1A2057667 ) and research grant of Kwangwoon University in 2015 are gratefully acknowledged. Publisher Copyright: © 2016 Elsevier B.V. All rights reserved.

PY - 2016/3/31

Y1 - 2016/3/31

N2 - The effect of temperature and pressure, and diffusion layer thickness is assessed on performance of a proton exchange membrane water electrolyzers (PEMWEs) with an ultralow iridium oxide (IrO2) loading (0.1 mg cm-2) anode prepared by electrodeposition and a Pt/C catalyzed cathode with a Pt loading of 0.4 mg cm-2. Increasing pressure to 2.5 bar at 120 °C enhances the water electrolysis current, so the anode electrodeposited with 0.1 mg cm-2 IrO2 gives a current density of 1.79 A cm-2 at 1.6 V, which is comparable to the conventional powder-type IrO2 electrode with 2.0 mg cm-2 at a temperature of 120 °C and pressure of 2.5 bar. The major factors for cell performances are rationalized in terms of overpotentials, water flow rates and thickness of diffusion layers, based on polarization behavior and ac-impedance response.

AB - The effect of temperature and pressure, and diffusion layer thickness is assessed on performance of a proton exchange membrane water electrolyzers (PEMWEs) with an ultralow iridium oxide (IrO2) loading (0.1 mg cm-2) anode prepared by electrodeposition and a Pt/C catalyzed cathode with a Pt loading of 0.4 mg cm-2. Increasing pressure to 2.5 bar at 120 °C enhances the water electrolysis current, so the anode electrodeposited with 0.1 mg cm-2 IrO2 gives a current density of 1.79 A cm-2 at 1.6 V, which is comparable to the conventional powder-type IrO2 electrode with 2.0 mg cm-2 at a temperature of 120 °C and pressure of 2.5 bar. The major factors for cell performances are rationalized in terms of overpotentials, water flow rates and thickness of diffusion layers, based on polarization behavior and ac-impedance response.

KW - Electrodeposition

KW - High temperature

KW - Iridium oxide

KW - Oxygen evolution reaction

KW - Polymer electrolyte membrane water electrolyzer

KW - Pressure

UR - http://www.scopus.com/inward/record.url?scp=84956648253&partnerID=8YFLogxK

U2 - 10.1016/j.jpowsour.2015.12.139

DO - 10.1016/j.jpowsour.2015.12.139

M3 - Article

AN - SCOPUS:84956648253

SN - 0378-7753

VL - 309

SP - 127

EP - 134

JO - Journal of Power Sources

JF - Journal of Power Sources

ER -

Polarization characteristics of a low catalyst loading PEM water electrolyzer operating at elevated temperature

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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