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

Research output: Contribution to journalArticle

11 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 languageEnglish
Pages (from-to)590-596
Number of pages7
JournalJournal of Alloys and Compounds
Volume741
DOIs
Publication statusPublished - 2018 Apr 15

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Hydrogen production
Fuel cells
Hydrogen
Precipitates
Hydrolysis
Annealing
Proton exchange membrane fuel cells (PEMFC)
Grain boundaries
Corrosion
Kinetics

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Oh, Se Kwon ; Kim, Hyo Won ; Kim, Min Joong ; Eom, Kwang Sup ; Kyung, Joon Seok ; Kim, Do Hyang ; Cho, Eun Ae ; Kwon, Hyuk Sang. / Design of Mg-Cu alloys for fast hydrogen production, and its application to PEM fuel cell. In: Journal of Alloys and Compounds. 2018 ; Vol. 741. pp. 590-596.
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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.",
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Design of Mg-Cu alloys for fast hydrogen production, and its application to PEM fuel cell. / Oh, Se Kwon; Kim, Hyo Won; Kim, Min Joong; Eom, Kwang Sup; Kyung, Joon Seok; Kim, Do Hyang; Cho, Eun Ae; Kwon, Hyuk Sang.

In: Journal of Alloys and Compounds, Vol. 741, 15.04.2018, p. 590-596.

Research output: Contribution to journalArticle

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T1 - Design of Mg-Cu alloys for fast hydrogen production, and its application to PEM fuel cell

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

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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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