Design of Mg-Cu alloys for fast hydrogen production, and its application to PEM fuel cell

Se Kwon Oh; Hyo Won Kim; Min Joong Kim; Kwang Sup Eom; Joon Seok Kyung; Do Hyang Kim; Eun Ae Cho; Hyuk Sang Kwon

doi:10.1016/j.jallcom.2017.12.257

Design of Mg-Cu alloys for fast hydrogen production, and its application to PEM fuel cell

Se Kwon Oh, Hyo Won Kim, Min Joong Kim, Kwang Sup Eom, Joon Seok Kyung, Do Hyang Kim, Eun Ae Cho, Hyuk Sang Kwon

Department of Materials Science and Engineering

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

18 Citations (Scopus)

Abstract

Mg-Cu alloys are designed for fast hydrogen generation by precipitating an electrochemically noble phase (Mg₂Cu) at the grain boundaries. The noble precipitates accelerate the hydrolysis kinetics of the alloy by synergetic action of galvanic and intergranular corrosion. The Mg-3Cu alloy exhibits a hydrogen generation rate of 5.23 ml min⁻¹ g⁻¹, which is 307 times faster than that of pure Mg (0.017 ml min⁻¹ g⁻¹). Furthermore, the effects of annealing of the alloy on the hydrogen generation rate and the feasibility of the production of power via hydrolysis of Mg-3Cu alloy are also confirmed. The annealing of the alloy reduces the hydrogen generation rate through the decrease of precipitates, and 10 g of Mg-3Cu alloy can produce power of 7.25 W for 37 min by operation of a single cell PEMFC.

Original language	English
Pages (from-to)	590-596
Number of pages	7
Journal	Journal of Alloys and Compounds
Volume	741
DOIs	https://doi.org/10.1016/j.jallcom.2017.12.257
Publication status	Published - 2018 Apr 15

Bibliographical note

Funding Information:
This work was sponsored by the National Research Foundation of Korea Grant, funded by the Korean Government (MSIT) ( NRF-2017M1A2A2072597 ).

Publisher Copyright:
© 2018 Elsevier B.V.

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

UN SDGs

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

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title = "Design of Mg-Cu alloys for fast hydrogen production, and its application to PEM fuel cell",

abstract = "Mg-Cu alloys are designed for fast hydrogen generation by precipitating an electrochemically noble phase (Mg2Cu) at the grain boundaries. The noble precipitates accelerate the hydrolysis kinetics of the alloy by synergetic action of galvanic and intergranular corrosion. The Mg-3Cu alloy exhibits a hydrogen generation rate of 5.23 ml min−1 g−1, which is 307 times faster than that of pure Mg (0.017 ml min−1 g−1). Furthermore, the effects of annealing of the alloy on the hydrogen generation rate and the feasibility of the production of power via hydrolysis of Mg-3Cu alloy are also confirmed. The annealing of the alloy reduces the hydrogen generation rate through the decrease of precipitates, and 10 g of Mg-3Cu alloy can produce power of 7.25 W for 37 min by operation of a single cell PEMFC.",

author = "Oh, {Se Kwon} and Kim, {Hyo Won} and Kim, {Min Joong} and Eom, {Kwang Sup} and Kyung, {Joon Seok} and Kim, {Do Hyang} and Cho, {Eun Ae} and Kwon, {Hyuk Sang}",

note = "Funding Information: This work was sponsored by the National Research Foundation of Korea Grant, funded by the Korean Government (MSIT) ( NRF-2017M1A2A2072597 ). Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

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doi = "10.1016/j.jallcom.2017.12.257",

language = "English",

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AU - Oh, Se Kwon

AU - Kim, Hyo Won

AU - Kim, Min Joong

AU - Eom, Kwang Sup

AU - Kyung, Joon Seok

AU - Kim, Do Hyang

AU - Cho, Eun Ae

AU - Kwon, Hyuk Sang

N1 - Funding Information: This work was sponsored by the National Research Foundation of Korea Grant, funded by the Korean Government (MSIT) ( NRF-2017M1A2A2072597 ). Publisher Copyright: © 2018 Elsevier B.V.

PY - 2018/4/15

Y1 - 2018/4/15

N2 - Mg-Cu alloys are designed for fast hydrogen generation by precipitating an electrochemically noble phase (Mg2Cu) at the grain boundaries. The noble precipitates accelerate the hydrolysis kinetics of the alloy by synergetic action of galvanic and intergranular corrosion. The Mg-3Cu alloy exhibits a hydrogen generation rate of 5.23 ml min−1 g−1, which is 307 times faster than that of pure Mg (0.017 ml min−1 g−1). Furthermore, the effects of annealing of the alloy on the hydrogen generation rate and the feasibility of the production of power via hydrolysis of Mg-3Cu alloy are also confirmed. The annealing of the alloy reduces the hydrogen generation rate through the decrease of precipitates, and 10 g of Mg-3Cu alloy can produce power of 7.25 W for 37 min by operation of a single cell PEMFC.

AB - Mg-Cu alloys are designed for fast hydrogen generation by precipitating an electrochemically noble phase (Mg2Cu) at the grain boundaries. The noble precipitates accelerate the hydrolysis kinetics of the alloy by synergetic action of galvanic and intergranular corrosion. The Mg-3Cu alloy exhibits a hydrogen generation rate of 5.23 ml min−1 g−1, which is 307 times faster than that of pure Mg (0.017 ml min−1 g−1). Furthermore, the effects of annealing of the alloy on the hydrogen generation rate and the feasibility of the production of power via hydrolysis of Mg-3Cu alloy are also confirmed. The annealing of the alloy reduces the hydrogen generation rate through the decrease of precipitates, and 10 g of Mg-3Cu alloy can produce power of 7.25 W for 37 min by operation of a single cell PEMFC.

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ER -

Design of Mg-Cu alloys for fast hydrogen production, and its application to PEM fuel cell

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

UN SDGs

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