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 | |
| Publication status | Published - 2018 Apr 15 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry
Cite this
}
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 journal › Article
TY - JOUR
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
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.
UR - http://www.scopus.com/inward/record.url?scp=85040639770&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85040639770&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2017.12.257
DO - 10.1016/j.jallcom.2017.12.257
M3 - Article
AN - SCOPUS:85040639770
VL - 741
SP - 590
EP - 596
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
ER -