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

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. (C) 2018 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE SA
Issue Date
2018-04
Language
English
Article Type
Article
Keywords

OXYGEN REDUCTION REACTION; EVOLUTION REACTION; BIFUNCTIONAL ELECTROCATALYST; SODIUM-BOROHYDRIDE; GENERATION PROPERTIES; AQUEOUS-SOLUTION; AMMONIA BORANE; HYDROLYSIS; MAGNESIUM; CORROSION

Citation

JOURNAL OF ALLOYS AND COMPOUNDS, v.741, pp.590 - 596

ISSN
0925-8388
DOI
10.1016/j.jallcom.2017.12.257
URI
http://hdl.handle.net/10203/240697
Appears in Collection
MS-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
  • Hit : 92
  • Download : 0
  • Cited 0 times in thomson ci
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡClick to seewebofscience_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0