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Korean J. Met. Mater.
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Korean Journal of Metals and Materials
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수소 분위기에서 Mg와 VCl
3
의 밀링에 의한 Mg의 수소 흡수 방출 특성의 향상
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송명엽, 이성호, 곽영준
Korean J. Met. Mater.
2021;59(10):709-717. Published online 2021 Sep 6
DOI:
https://doi.org/10.3365/KJMM.2021.59.10.709
Abstract
VCl
3
(vanadium (III) chloride) was selected as an additive to Mg to increase the hydrogenation and dehydrogenation rates and the hydrogen storage capacity of Mg. Instead of MgH
2
, Mg was used as a starting material since Mg is cheaper than MgH
2
. Samples with a composition of 95 wt% Mg +.....
More
Crossref 5
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Korean J. Met. Mater.
2019;57(10):663-672. Published online 2019 Sep 6
DOI:
https://doi.org/10.3365/KJMM.2019.57.10.663
Abstract
The dehydrogenation rates of graphene-added Mg (named Mg-5graphene) were very low at 573 K and 593 K. Ni was added to increase the dehydrogenation rates of graphene-added Mg. Samples (designated as Mg-2.5Ni-2.5graphene) with a composition of 95 wt% Mg + 2.5 wt% Ni + 2.5 wt% graphene were prepared by.....
More
Web of Science 7
Crossref 6
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Korean J. Met. Mater.
2019;57(3):176-183. Published online 2019 Feb 8
DOI:
https://doi.org/10.3365/KJMM.2019.57.3.176
Abstract
In the present work, MgH2 was doped with Zn(BH4)2, Ni, and/or Ti to improve its hydrogen absorption and release features. Samples were prepared by grinding in a planetary ball mill in a hydrogen atmosphere. To increase the hydrogen absorption and release rates without significantly sacrificing hydrogenstorage capacity the additive percentages.....
More
Web of Science 8
Crossref 7
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Korean J. Met. Mater.
2018;56(12):878-884. Published online 2018 Dec 5
DOI:
https://doi.org/10.3365/KJMM.2018.56.12.878
Abstract
In the present work, we selected a polymer, polyvinylidene fluoride (PVDF), as an additive to improve the hydrogenation and dehydrogenation properties of Mg. 95 wt% Mg + 5 wt% PVDF (designated Mg-5PVDF) samples were prepared via milling in hydrogen atmosphere (reactive milling), and the hydrogenation and dehydrogenation characteristics of the.....
More
Crossref 5
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Korean J. Met. Mater.
2018;56(8):620-627. Published online 2018 Aug 5
DOI:
https://doi.org/10.3365/KJMM.2018.56.8.620
Abstract
In our previous work, samples with a composition of 95 wt% Mg + 5 wt% CMC (Carboxymethylcellulose, Sodium Salt, [C
6
H
7
O
2
(OH)
x
(C
2
H
2
O
3
Na)
y
]
n
) (named Mg-5 wt%CMC) were prepared through hydride-forming milling. Mg-5 wt%CMC had a very high hydrogenation rate but a low dehydrogenation rate. Addition of Ni to Mg is known to increase.....
More
Crossref 5
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Korean J. Met. Mater.
2018;56(8):611-619. Published online 2018 Aug 5
DOI:
https://doi.org/10.3365/KJMM.2018.56.8.611
Abstract
TaF
5
and VCl
3
were chosen as additives to enhance the hydrogen uptake and release rates of Mg. The total content of the additives was not more than 10 wt% since too high content reduces the fraction of Mg and thus the hydrogen storage capacity of the alloys. Samples with compositions.....
More
Crossref 7
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Korean J. Met. Mater.
2018;56(7):524-531. Published online 2018 Jul 5
DOI:
https://doi.org/10.3365/KJMM.2018.56.7.524
Abstract
To improve the hydrogen uptake and release properties of magnesium (Mg), five weight percent of graphene was added to pre-milled Mg by milling in hydrogen (reaction-involving milling). The hydrogen uptake and release properties of the graphene-added Mg (named Mg-5graphene) were investigated. Premilling of Mg (for 24 h) and then adding.....
More
Crossref 10
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Korean J. Met. Mater.
2018;56(5):392-399. Published online 2018 May 8
DOI:
https://doi.org/10.3365/KJMM.2018.56.5.392
Abstract
The addition of CMC (Carboxymethylcellulose, Sodium Salt) may improve the hydriding and dehydriding properties of Mg since it has a relatively low melting point and the melting of CMC during transformation-involving milling may put the milled samples in good states to absorb and release hydrogen rapidly. Samples with compositions of.....
More
Crossref 6
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Korean J. Met. Mater.
2018;56(3):244-251. Published online 2018 Mar 6
DOI:
https://doi.org/10.3365/KJMM.2018.56.3.244
Abstract
Samples with compositions of 99 w/o MgH
2
+1 w/o Zn(BH
4
)
2
(designated MgH
2-
1Zn(BH
4
)
2
) and 96 w/o MgH
2
+2 w/o Zn(BH
4
)
2+
2 w/o Ni (designated MgH
2-
2Zn(BH
4
)
2-
2Ni) were prepared by milling in a planetary ball mill in a hydrogen atmosphere (reaction-involving milling). The hydrogen release properties of MgH
2-
1Zn(BH
4
)
2
and MgH
2-
2Zn(BH
4
)
2-
2Ni were compared. A larger quantity.....
More
Crossref 1
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Korean J. Met. Mater.
2018;56(1):59-65. Published online 2018 Jan 1
DOI:
https://doi.org/10.3365/KJMM.2018.56.1.59
Abstract
In this work, Mg
2
Ni and Ni were added to MgH
2
in order to improve the hydrogen-storage properties of Mg. A 94 wt% MgH
2
+5 wt% Mg
2
Ni+1wt% Ni (named 94MgH
2
+5Mg
2
Ni+1Ni) sample was prepared by milling in a hydrogen atmosphere in a planetary ball mill for 5 h. The Mg
2
Ni was hydrided during.....
More
Crossref 8
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Korean J. Met. Mater.
2017;55(9):657-663. Published online 2017 Aug 30
DOI:
https://doi.org/10.3365/KJMM.2017.55.9.657
Abstract
Abstract: In this work, Zn(BH
4
)
2
was added to improve the hydrogen-storage properties of MgH
2
. A 99 wt% MgH
2
+1 wt% Zn(BH
4
)
2
sample was prepared by milling in a planetary ball mill in a hydrogen atmosphere. The proportion of the added Zn(BH
4
)
2
was small (1 wt%) in order to increase hydriding and.....
More
Crossref 2
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Korean J. Met. Mater.
2016;54(12):916-924. Published online 2016 Dec 5
DOI:
https://doi.org/10.3365/KJMM.2016.54.12.916
Abstract
In this work, niobium (V) fluoride was selected as an additive to heighten the hydrogen sorption rates of Mg. Specimens of pure Mg, 5 wt% niobium fluoride－added Mg, and 10 wt% niobium fluoride-added Mg were prepared by planetary ball milling in hydrogen. The hydrogen sorption properties of the specimens were.....
More
Crossref 5
1
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