Development of a high-energy-density portable/mobile hydrogen energy storage system incorporating an electrolyzer, a metal hydride and a fuel cell

Gwangwoo Han; Yong Keun Kwon; Joong Bae Kim; Sanghun Lee; Joongmyeon Bae; Eun Ae Cho; Bong Jae Lee; Sungbaek Cho; Jinwoo Park

doi:10.1016/j.apenergy.2019.114175

Development of a high-energy-density portable/mobile hydrogen energy storage system incorporating an electrolyzer, a metal hydride and a fuel cell

Gwangwoo Han, Yong Keun Kwon, Joong Bae Kim, Sanghun Lee, Joongmyeon Bae, Eun Ae Cho, Bong Jae Lee, Sungbaek Cho, Jinwoo Park

Department of Climate and Energy Systems Engineering

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

84 Scopus citations

Abstract

A hydrogen energy storage system for portable/mobile applications such as personal power sources and unmanned underwater vehicles is developed. An application-oriented design and system integration strategy are newly suggested to maximize energy density while incorporating conventional technologies for the electrolyzer (Ely), the metal hydride (MH), and the polymer electrolyte membrane fuel cell (PEMFC). To improve both the energy density and usability, the systems for charging and discharging are separated. The charging component is composed of a water Ely (0.5 Nm³ h⁻¹) and an MH cooling device as one system. The discharging component consists of an MH (900 NL H₂), a PEMFC stack (50 W), and a power conditioning system (PCS) as a single system. The MH material and engineering properties are investigated to find an MH that is suitable for the target system. The hybrid design and operating strategy of the PEMFC and PCS are developed to maximize energy density. The prototype system provides a nominal power output of 31.5 W at 12 V for 38 h with one recharging. We find it significant that the discharging component shows an energy density of 410 Wh L⁻¹, which is twice that of conventional energy storage systems at the 2.9-L level.

Original language	English
Article number	114175
Journal	Applied Energy
Volume	259
DOIs	https://doi.org/10.1016/j.apenergy.2019.114175
State	Published - 1 Feb 2020

Bibliographical note

Funding Information:
This work was supported by the Agency for Defense Development in South Korea (ADD) . The authors wish to thank the ADD for financial assistance and for permission to publish the results. In addition, this work was also supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20174030201590 ). Appendix A

Funding Information:
This work was supported by the Agency for Defense Development in South Korea (ADD). The authors wish to thank the ADD for financial assistance and for permission to publish the results. In addition, this work was also supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20174030201590).

Publisher Copyright:
© 2019 Elsevier Ltd

Keywords

Electrolyzer
Energy density
Hydrogen
Metal hydride
PEMFC

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10.1016/j.apenergy.2019.114175

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abstract = "A hydrogen energy storage system for portable/mobile applications such as personal power sources and unmanned underwater vehicles is developed. An application-oriented design and system integration strategy are newly suggested to maximize energy density while incorporating conventional technologies for the electrolyzer (Ely), the metal hydride (MH), and the polymer electrolyte membrane fuel cell (PEMFC). To improve both the energy density and usability, the systems for charging and discharging are separated. The charging component is composed of a water Ely (0.5 Nm3 h−1) and an MH cooling device as one system. The discharging component consists of an MH (900 NL H2), a PEMFC stack (50 W), and a power conditioning system (PCS) as a single system. The MH material and engineering properties are investigated to find an MH that is suitable for the target system. The hybrid design and operating strategy of the PEMFC and PCS are developed to maximize energy density. The prototype system provides a nominal power output of 31.5 W at 12 V for 38 h with one recharging. We find it significant that the discharging component shows an energy density of 410 Wh L−1, which is twice that of conventional energy storage systems at the 2.9-L level.",

keywords = "Electrolyzer, Energy density, Hydrogen, Metal hydride, PEMFC",

author = "Gwangwoo Han and Kwon, {Yong Keun} and Kim, {Joong Bae} and Sanghun Lee and Joongmyeon Bae and Cho, {Eun Ae} and Lee, {Bong Jae} and Sungbaek Cho and Jinwoo Park",

note = "Funding Information: This work was supported by the Agency for Defense Development in South Korea (ADD) . The authors wish to thank the ADD for financial assistance and for permission to publish the results. In addition, this work was also supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20174030201590 ). Appendix A Funding Information: This work was supported by the Agency for Defense Development in South Korea (ADD). The authors wish to thank the ADD for financial assistance and for permission to publish the results. In addition, this work was also supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20174030201590). Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

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AU - Bae, Joongmyeon

AU - Cho, Eun Ae

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AU - Cho, Sungbaek

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ER -

Development of a high-energy-density portable/mobile hydrogen energy storage system incorporating an electrolyzer, a metal hydride and a fuel cell

Abstract

Bibliographical note

Keywords

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