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

14 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

All Science Journal Classification (ASJC) codes

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

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