Development of a Mg-based hydrogen-storage material by addition of Ni and NbF5 via milling under hydrogen
Milling under hydrogen was used to prepare samples with a composition of 80 wt% Mg + 14 wt% Ni + 6 wt% NbF5 (named 80Mg + 14Ni + 6NbF5). 80Mg + 14Ni + 6NbF5 had a large effective storage capacity of hydrogen of approximately 5.6 wt% H. The activation of 80Mg + 14Ni + 6NbF5 was done after one storing...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Kwak, Young Jun [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2015transfer abstract |
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| Schlagwörter: |
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| Umfang: |
9 |
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| Übergeordnetes Werk: |
Enthalten in: External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs - Dedhia, Kavita ELSEVIER, 2018, official journal of the International Association for Hydrogen Energy, New York, NY [u.a.] |
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| Übergeordnetes Werk: |
volume:40 ; year:2015 ; number:35 ; day:21 ; month:09 ; pages:11908-11916 ; extent:9 |
| Links: |
|---|
| DOI / URN: |
10.1016/j.ijhydene.2015.04.111 |
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ELV018556841 |
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| 245 | 1 | 0 | |a Development of a Mg-based hydrogen-storage material by addition of Ni and NbF5 via milling under hydrogen |
| 264 | 1 | |c 2015transfer abstract | |
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| 520 | |a Milling under hydrogen was used to prepare samples with a composition of 80 wt% Mg + 14 wt% Ni + 6 wt% NbF5 (named 80Mg + 14Ni + 6NbF5). 80Mg + 14Ni + 6NbF5 had a large effective storage capacity of hydrogen of approximately 5.6 wt% H. The activation of 80Mg + 14Ni + 6NbF5 was done after one storing-releasing cycle. At n = 2 at 593 K, 80Mg + 14Ni + 6NbF5 stored 3.92 and 5.57 wt% H after 2.5 and 60 min, respectively, under 12 bar H2, and released 2.34 and 4.81 wt% H after 10 and 60 min, respectively, under 1.0 bar H2. The following reaction happened during milling under hydrogen and at the early storing-releasing cycles: 14Mg + Ni + 4NbF5 + 7H2 → MgH2 + Mg2NiH4 + Mg + 10MgF2 + 4NbH2. At a fairly low temperature of 423 K, the sample stored 0.28, 0.34, and 0.57 wt% H after 5, 10, and 60 min, respectively. The initial storing rate of 80Mg + 14Ni + 6NbF5 increased as the temperature rose from the room temperature to 573 K since the effect of thermal activation is predominant, and fell as the temperature rose from 573 K to 623 K since the effect of decrease in the driving force for storing reaction is predominant. | ||
| 520 | |a Milling under hydrogen was used to prepare samples with a composition of 80 wt% Mg + 14 wt% Ni + 6 wt% NbF5 (named 80Mg + 14Ni + 6NbF5). 80Mg + 14Ni + 6NbF5 had a large effective storage capacity of hydrogen of approximately 5.6 wt% H. The activation of 80Mg + 14Ni + 6NbF5 was done after one storing-releasing cycle. At n = 2 at 593 K, 80Mg + 14Ni + 6NbF5 stored 3.92 and 5.57 wt% H after 2.5 and 60 min, respectively, under 12 bar H2, and released 2.34 and 4.81 wt% H after 10 and 60 min, respectively, under 1.0 bar H2. The following reaction happened during milling under hydrogen and at the early storing-releasing cycles: 14Mg + Ni + 4NbF5 + 7H2 → MgH2 + Mg2NiH4 + Mg + 10MgF2 + 4NbH2. At a fairly low temperature of 423 K, the sample stored 0.28, 0.34, and 0.57 wt% H after 5, 10, and 60 min, respectively. The initial storing rate of 80Mg + 14Ni + 6NbF5 increased as the temperature rose from the room temperature to 573 K since the effect of thermal activation is predominant, and fell as the temperature rose from 573 K to 623 K since the effect of decrease in the driving force for storing reaction is predominant. | ||
| 650 | 7 | |a Hydrogen storage materials |2 Elsevier | |
| 650 | 7 | |a Storing and releasing rates |2 Elsevier | |
| 650 | 7 | |a Milling under hydrogen |2 Elsevier | |
| 650 | 7 | |a Magnesium |2 Elsevier | |
| 650 | 7 | |a Ni and NbF5 addition |2 Elsevier | |
| 700 | 1 | |a Lee, Seong Ho |4 oth | |
| 700 | 1 | |a Mumm, Daniel R. |4 oth | |
| 700 | 1 | |a Song, Myoung Youp |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Elsevier |a Dedhia, Kavita ELSEVIER |t External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs |d 2018 |d official journal of the International Association for Hydrogen Energy |g New York, NY [u.a.] |w (DE-627)ELV000127019 |
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10.1016/j.ijhydene.2015.04.111 doi GBVA2015012000003.pica (DE-627)ELV018556841 (ELSEVIER)S0360-3199(15)01023-X DE-627 ger DE-627 rakwb eng 660 620 660 DE-600 620 DE-600 610 VZ 44.94 bkl Kwak, Young Jun verfasserin aut Development of a Mg-based hydrogen-storage material by addition of Ni and NbF5 via milling under hydrogen 2015transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Milling under hydrogen was used to prepare samples with a composition of 80 wt% Mg + 14 wt% Ni + 6 wt% NbF5 (named 80Mg + 14Ni + 6NbF5). 80Mg + 14Ni + 6NbF5 had a large effective storage capacity of hydrogen of approximately 5.6 wt% H. The activation of 80Mg + 14Ni + 6NbF5 was done after one storing-releasing cycle. At n = 2 at 593 K, 80Mg + 14Ni + 6NbF5 stored 3.92 and 5.57 wt% H after 2.5 and 60 min, respectively, under 12 bar H2, and released 2.34 and 4.81 wt% H after 10 and 60 min, respectively, under 1.0 bar H2. The following reaction happened during milling under hydrogen and at the early storing-releasing cycles: 14Mg + Ni + 4NbF5 + 7H2 → MgH2 + Mg2NiH4 + Mg + 10MgF2 + 4NbH2. At a fairly low temperature of 423 K, the sample stored 0.28, 0.34, and 0.57 wt% H after 5, 10, and 60 min, respectively. The initial storing rate of 80Mg + 14Ni + 6NbF5 increased as the temperature rose from the room temperature to 573 K since the effect of thermal activation is predominant, and fell as the temperature rose from 573 K to 623 K since the effect of decrease in the driving force for storing reaction is predominant. Milling under hydrogen was used to prepare samples with a composition of 80 wt% Mg + 14 wt% Ni + 6 wt% NbF5 (named 80Mg + 14Ni + 6NbF5). 80Mg + 14Ni + 6NbF5 had a large effective storage capacity of hydrogen of approximately 5.6 wt% H. The activation of 80Mg + 14Ni + 6NbF5 was done after one storing-releasing cycle. At n = 2 at 593 K, 80Mg + 14Ni + 6NbF5 stored 3.92 and 5.57 wt% H after 2.5 and 60 min, respectively, under 12 bar H2, and released 2.34 and 4.81 wt% H after 10 and 60 min, respectively, under 1.0 bar H2. The following reaction happened during milling under hydrogen and at the early storing-releasing cycles: 14Mg + Ni + 4NbF5 + 7H2 → MgH2 + Mg2NiH4 + Mg + 10MgF2 + 4NbH2. At a fairly low temperature of 423 K, the sample stored 0.28, 0.34, and 0.57 wt% H after 5, 10, and 60 min, respectively. The initial storing rate of 80Mg + 14Ni + 6NbF5 increased as the temperature rose from the room temperature to 573 K since the effect of thermal activation is predominant, and fell as the temperature rose from 573 K to 623 K since the effect of decrease in the driving force for storing reaction is predominant. Hydrogen storage materials Elsevier Storing and releasing rates Elsevier Milling under hydrogen Elsevier Magnesium Elsevier Ni and NbF5 addition Elsevier Lee, Seong Ho oth Mumm, Daniel R. oth Song, Myoung Youp oth Enthalten in Elsevier Dedhia, Kavita ELSEVIER External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs 2018 official journal of the International Association for Hydrogen Energy New York, NY [u.a.] (DE-627)ELV000127019 volume:40 year:2015 number:35 day:21 month:09 pages:11908-11916 extent:9 https://doi.org/10.1016/j.ijhydene.2015.04.111 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.94 Hals-Nasen-Ohrenheilkunde VZ AR 40 2015 35 21 0921 11908-11916 9 045F 660 |
| spelling |
10.1016/j.ijhydene.2015.04.111 doi GBVA2015012000003.pica (DE-627)ELV018556841 (ELSEVIER)S0360-3199(15)01023-X DE-627 ger DE-627 rakwb eng 660 620 660 DE-600 620 DE-600 610 VZ 44.94 bkl Kwak, Young Jun verfasserin aut Development of a Mg-based hydrogen-storage material by addition of Ni and NbF5 via milling under hydrogen 2015transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Milling under hydrogen was used to prepare samples with a composition of 80 wt% Mg + 14 wt% Ni + 6 wt% NbF5 (named 80Mg + 14Ni + 6NbF5). 80Mg + 14Ni + 6NbF5 had a large effective storage capacity of hydrogen of approximately 5.6 wt% H. The activation of 80Mg + 14Ni + 6NbF5 was done after one storing-releasing cycle. At n = 2 at 593 K, 80Mg + 14Ni + 6NbF5 stored 3.92 and 5.57 wt% H after 2.5 and 60 min, respectively, under 12 bar H2, and released 2.34 and 4.81 wt% H after 10 and 60 min, respectively, under 1.0 bar H2. The following reaction happened during milling under hydrogen and at the early storing-releasing cycles: 14Mg + Ni + 4NbF5 + 7H2 → MgH2 + Mg2NiH4 + Mg + 10MgF2 + 4NbH2. At a fairly low temperature of 423 K, the sample stored 0.28, 0.34, and 0.57 wt% H after 5, 10, and 60 min, respectively. The initial storing rate of 80Mg + 14Ni + 6NbF5 increased as the temperature rose from the room temperature to 573 K since the effect of thermal activation is predominant, and fell as the temperature rose from 573 K to 623 K since the effect of decrease in the driving force for storing reaction is predominant. Milling under hydrogen was used to prepare samples with a composition of 80 wt% Mg + 14 wt% Ni + 6 wt% NbF5 (named 80Mg + 14Ni + 6NbF5). 80Mg + 14Ni + 6NbF5 had a large effective storage capacity of hydrogen of approximately 5.6 wt% H. The activation of 80Mg + 14Ni + 6NbF5 was done after one storing-releasing cycle. At n = 2 at 593 K, 80Mg + 14Ni + 6NbF5 stored 3.92 and 5.57 wt% H after 2.5 and 60 min, respectively, under 12 bar H2, and released 2.34 and 4.81 wt% H after 10 and 60 min, respectively, under 1.0 bar H2. The following reaction happened during milling under hydrogen and at the early storing-releasing cycles: 14Mg + Ni + 4NbF5 + 7H2 → MgH2 + Mg2NiH4 + Mg + 10MgF2 + 4NbH2. At a fairly low temperature of 423 K, the sample stored 0.28, 0.34, and 0.57 wt% H after 5, 10, and 60 min, respectively. The initial storing rate of 80Mg + 14Ni + 6NbF5 increased as the temperature rose from the room temperature to 573 K since the effect of thermal activation is predominant, and fell as the temperature rose from 573 K to 623 K since the effect of decrease in the driving force for storing reaction is predominant. Hydrogen storage materials Elsevier Storing and releasing rates Elsevier Milling under hydrogen Elsevier Magnesium Elsevier Ni and NbF5 addition Elsevier Lee, Seong Ho oth Mumm, Daniel R. oth Song, Myoung Youp oth Enthalten in Elsevier Dedhia, Kavita ELSEVIER External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs 2018 official journal of the International Association for Hydrogen Energy New York, NY [u.a.] (DE-627)ELV000127019 volume:40 year:2015 number:35 day:21 month:09 pages:11908-11916 extent:9 https://doi.org/10.1016/j.ijhydene.2015.04.111 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.94 Hals-Nasen-Ohrenheilkunde VZ AR 40 2015 35 21 0921 11908-11916 9 045F 660 |
| allfields_unstemmed |
10.1016/j.ijhydene.2015.04.111 doi GBVA2015012000003.pica (DE-627)ELV018556841 (ELSEVIER)S0360-3199(15)01023-X DE-627 ger DE-627 rakwb eng 660 620 660 DE-600 620 DE-600 610 VZ 44.94 bkl Kwak, Young Jun verfasserin aut Development of a Mg-based hydrogen-storage material by addition of Ni and NbF5 via milling under hydrogen 2015transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Milling under hydrogen was used to prepare samples with a composition of 80 wt% Mg + 14 wt% Ni + 6 wt% NbF5 (named 80Mg + 14Ni + 6NbF5). 80Mg + 14Ni + 6NbF5 had a large effective storage capacity of hydrogen of approximately 5.6 wt% H. The activation of 80Mg + 14Ni + 6NbF5 was done after one storing-releasing cycle. At n = 2 at 593 K, 80Mg + 14Ni + 6NbF5 stored 3.92 and 5.57 wt% H after 2.5 and 60 min, respectively, under 12 bar H2, and released 2.34 and 4.81 wt% H after 10 and 60 min, respectively, under 1.0 bar H2. The following reaction happened during milling under hydrogen and at the early storing-releasing cycles: 14Mg + Ni + 4NbF5 + 7H2 → MgH2 + Mg2NiH4 + Mg + 10MgF2 + 4NbH2. At a fairly low temperature of 423 K, the sample stored 0.28, 0.34, and 0.57 wt% H after 5, 10, and 60 min, respectively. The initial storing rate of 80Mg + 14Ni + 6NbF5 increased as the temperature rose from the room temperature to 573 K since the effect of thermal activation is predominant, and fell as the temperature rose from 573 K to 623 K since the effect of decrease in the driving force for storing reaction is predominant. Milling under hydrogen was used to prepare samples with a composition of 80 wt% Mg + 14 wt% Ni + 6 wt% NbF5 (named 80Mg + 14Ni + 6NbF5). 80Mg + 14Ni + 6NbF5 had a large effective storage capacity of hydrogen of approximately 5.6 wt% H. The activation of 80Mg + 14Ni + 6NbF5 was done after one storing-releasing cycle. At n = 2 at 593 K, 80Mg + 14Ni + 6NbF5 stored 3.92 and 5.57 wt% H after 2.5 and 60 min, respectively, under 12 bar H2, and released 2.34 and 4.81 wt% H after 10 and 60 min, respectively, under 1.0 bar H2. The following reaction happened during milling under hydrogen and at the early storing-releasing cycles: 14Mg + Ni + 4NbF5 + 7H2 → MgH2 + Mg2NiH4 + Mg + 10MgF2 + 4NbH2. At a fairly low temperature of 423 K, the sample stored 0.28, 0.34, and 0.57 wt% H after 5, 10, and 60 min, respectively. The initial storing rate of 80Mg + 14Ni + 6NbF5 increased as the temperature rose from the room temperature to 573 K since the effect of thermal activation is predominant, and fell as the temperature rose from 573 K to 623 K since the effect of decrease in the driving force for storing reaction is predominant. Hydrogen storage materials Elsevier Storing and releasing rates Elsevier Milling under hydrogen Elsevier Magnesium Elsevier Ni and NbF5 addition Elsevier Lee, Seong Ho oth Mumm, Daniel R. oth Song, Myoung Youp oth Enthalten in Elsevier Dedhia, Kavita ELSEVIER External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs 2018 official journal of the International Association for Hydrogen Energy New York, NY [u.a.] (DE-627)ELV000127019 volume:40 year:2015 number:35 day:21 month:09 pages:11908-11916 extent:9 https://doi.org/10.1016/j.ijhydene.2015.04.111 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.94 Hals-Nasen-Ohrenheilkunde VZ AR 40 2015 35 21 0921 11908-11916 9 045F 660 |
| allfieldsGer |
10.1016/j.ijhydene.2015.04.111 doi GBVA2015012000003.pica (DE-627)ELV018556841 (ELSEVIER)S0360-3199(15)01023-X DE-627 ger DE-627 rakwb eng 660 620 660 DE-600 620 DE-600 610 VZ 44.94 bkl Kwak, Young Jun verfasserin aut Development of a Mg-based hydrogen-storage material by addition of Ni and NbF5 via milling under hydrogen 2015transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Milling under hydrogen was used to prepare samples with a composition of 80 wt% Mg + 14 wt% Ni + 6 wt% NbF5 (named 80Mg + 14Ni + 6NbF5). 80Mg + 14Ni + 6NbF5 had a large effective storage capacity of hydrogen of approximately 5.6 wt% H. The activation of 80Mg + 14Ni + 6NbF5 was done after one storing-releasing cycle. At n = 2 at 593 K, 80Mg + 14Ni + 6NbF5 stored 3.92 and 5.57 wt% H after 2.5 and 60 min, respectively, under 12 bar H2, and released 2.34 and 4.81 wt% H after 10 and 60 min, respectively, under 1.0 bar H2. The following reaction happened during milling under hydrogen and at the early storing-releasing cycles: 14Mg + Ni + 4NbF5 + 7H2 → MgH2 + Mg2NiH4 + Mg + 10MgF2 + 4NbH2. At a fairly low temperature of 423 K, the sample stored 0.28, 0.34, and 0.57 wt% H after 5, 10, and 60 min, respectively. The initial storing rate of 80Mg + 14Ni + 6NbF5 increased as the temperature rose from the room temperature to 573 K since the effect of thermal activation is predominant, and fell as the temperature rose from 573 K to 623 K since the effect of decrease in the driving force for storing reaction is predominant. Milling under hydrogen was used to prepare samples with a composition of 80 wt% Mg + 14 wt% Ni + 6 wt% NbF5 (named 80Mg + 14Ni + 6NbF5). 80Mg + 14Ni + 6NbF5 had a large effective storage capacity of hydrogen of approximately 5.6 wt% H. The activation of 80Mg + 14Ni + 6NbF5 was done after one storing-releasing cycle. At n = 2 at 593 K, 80Mg + 14Ni + 6NbF5 stored 3.92 and 5.57 wt% H after 2.5 and 60 min, respectively, under 12 bar H2, and released 2.34 and 4.81 wt% H after 10 and 60 min, respectively, under 1.0 bar H2. The following reaction happened during milling under hydrogen and at the early storing-releasing cycles: 14Mg + Ni + 4NbF5 + 7H2 → MgH2 + Mg2NiH4 + Mg + 10MgF2 + 4NbH2. At a fairly low temperature of 423 K, the sample stored 0.28, 0.34, and 0.57 wt% H after 5, 10, and 60 min, respectively. The initial storing rate of 80Mg + 14Ni + 6NbF5 increased as the temperature rose from the room temperature to 573 K since the effect of thermal activation is predominant, and fell as the temperature rose from 573 K to 623 K since the effect of decrease in the driving force for storing reaction is predominant. Hydrogen storage materials Elsevier Storing and releasing rates Elsevier Milling under hydrogen Elsevier Magnesium Elsevier Ni and NbF5 addition Elsevier Lee, Seong Ho oth Mumm, Daniel R. oth Song, Myoung Youp oth Enthalten in Elsevier Dedhia, Kavita ELSEVIER External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs 2018 official journal of the International Association for Hydrogen Energy New York, NY [u.a.] (DE-627)ELV000127019 volume:40 year:2015 number:35 day:21 month:09 pages:11908-11916 extent:9 https://doi.org/10.1016/j.ijhydene.2015.04.111 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.94 Hals-Nasen-Ohrenheilkunde VZ AR 40 2015 35 21 0921 11908-11916 9 045F 660 |
| allfieldsSound |
10.1016/j.ijhydene.2015.04.111 doi GBVA2015012000003.pica (DE-627)ELV018556841 (ELSEVIER)S0360-3199(15)01023-X DE-627 ger DE-627 rakwb eng 660 620 660 DE-600 620 DE-600 610 VZ 44.94 bkl Kwak, Young Jun verfasserin aut Development of a Mg-based hydrogen-storage material by addition of Ni and NbF5 via milling under hydrogen 2015transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Milling under hydrogen was used to prepare samples with a composition of 80 wt% Mg + 14 wt% Ni + 6 wt% NbF5 (named 80Mg + 14Ni + 6NbF5). 80Mg + 14Ni + 6NbF5 had a large effective storage capacity of hydrogen of approximately 5.6 wt% H. The activation of 80Mg + 14Ni + 6NbF5 was done after one storing-releasing cycle. At n = 2 at 593 K, 80Mg + 14Ni + 6NbF5 stored 3.92 and 5.57 wt% H after 2.5 and 60 min, respectively, under 12 bar H2, and released 2.34 and 4.81 wt% H after 10 and 60 min, respectively, under 1.0 bar H2. The following reaction happened during milling under hydrogen and at the early storing-releasing cycles: 14Mg + Ni + 4NbF5 + 7H2 → MgH2 + Mg2NiH4 + Mg + 10MgF2 + 4NbH2. At a fairly low temperature of 423 K, the sample stored 0.28, 0.34, and 0.57 wt% H after 5, 10, and 60 min, respectively. The initial storing rate of 80Mg + 14Ni + 6NbF5 increased as the temperature rose from the room temperature to 573 K since the effect of thermal activation is predominant, and fell as the temperature rose from 573 K to 623 K since the effect of decrease in the driving force for storing reaction is predominant. Milling under hydrogen was used to prepare samples with a composition of 80 wt% Mg + 14 wt% Ni + 6 wt% NbF5 (named 80Mg + 14Ni + 6NbF5). 80Mg + 14Ni + 6NbF5 had a large effective storage capacity of hydrogen of approximately 5.6 wt% H. The activation of 80Mg + 14Ni + 6NbF5 was done after one storing-releasing cycle. At n = 2 at 593 K, 80Mg + 14Ni + 6NbF5 stored 3.92 and 5.57 wt% H after 2.5 and 60 min, respectively, under 12 bar H2, and released 2.34 and 4.81 wt% H after 10 and 60 min, respectively, under 1.0 bar H2. The following reaction happened during milling under hydrogen and at the early storing-releasing cycles: 14Mg + Ni + 4NbF5 + 7H2 → MgH2 + Mg2NiH4 + Mg + 10MgF2 + 4NbH2. At a fairly low temperature of 423 K, the sample stored 0.28, 0.34, and 0.57 wt% H after 5, 10, and 60 min, respectively. The initial storing rate of 80Mg + 14Ni + 6NbF5 increased as the temperature rose from the room temperature to 573 K since the effect of thermal activation is predominant, and fell as the temperature rose from 573 K to 623 K since the effect of decrease in the driving force for storing reaction is predominant. Hydrogen storage materials Elsevier Storing and releasing rates Elsevier Milling under hydrogen Elsevier Magnesium Elsevier Ni and NbF5 addition Elsevier Lee, Seong Ho oth Mumm, Daniel R. oth Song, Myoung Youp oth Enthalten in Elsevier Dedhia, Kavita ELSEVIER External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs 2018 official journal of the International Association for Hydrogen Energy New York, NY [u.a.] (DE-627)ELV000127019 volume:40 year:2015 number:35 day:21 month:09 pages:11908-11916 extent:9 https://doi.org/10.1016/j.ijhydene.2015.04.111 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.94 Hals-Nasen-Ohrenheilkunde VZ AR 40 2015 35 21 0921 11908-11916 9 045F 660 |
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Enthalten in External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs New York, NY [u.a.] volume:40 year:2015 number:35 day:21 month:09 pages:11908-11916 extent:9 |
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development of a mg-based hydrogen-storage material by addition of ni and nbf5 via milling under hydrogen |
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Development of a Mg-based hydrogen-storage material by addition of Ni and NbF5 via milling under hydrogen |
| abstract |
Milling under hydrogen was used to prepare samples with a composition of 80 wt% Mg + 14 wt% Ni + 6 wt% NbF5 (named 80Mg + 14Ni + 6NbF5). 80Mg + 14Ni + 6NbF5 had a large effective storage capacity of hydrogen of approximately 5.6 wt% H. The activation of 80Mg + 14Ni + 6NbF5 was done after one storing-releasing cycle. At n = 2 at 593 K, 80Mg + 14Ni + 6NbF5 stored 3.92 and 5.57 wt% H after 2.5 and 60 min, respectively, under 12 bar H2, and released 2.34 and 4.81 wt% H after 10 and 60 min, respectively, under 1.0 bar H2. The following reaction happened during milling under hydrogen and at the early storing-releasing cycles: 14Mg + Ni + 4NbF5 + 7H2 → MgH2 + Mg2NiH4 + Mg + 10MgF2 + 4NbH2. At a fairly low temperature of 423 K, the sample stored 0.28, 0.34, and 0.57 wt% H after 5, 10, and 60 min, respectively. The initial storing rate of 80Mg + 14Ni + 6NbF5 increased as the temperature rose from the room temperature to 573 K since the effect of thermal activation is predominant, and fell as the temperature rose from 573 K to 623 K since the effect of decrease in the driving force for storing reaction is predominant. |
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Milling under hydrogen was used to prepare samples with a composition of 80 wt% Mg + 14 wt% Ni + 6 wt% NbF5 (named 80Mg + 14Ni + 6NbF5). 80Mg + 14Ni + 6NbF5 had a large effective storage capacity of hydrogen of approximately 5.6 wt% H. The activation of 80Mg + 14Ni + 6NbF5 was done after one storing-releasing cycle. At n = 2 at 593 K, 80Mg + 14Ni + 6NbF5 stored 3.92 and 5.57 wt% H after 2.5 and 60 min, respectively, under 12 bar H2, and released 2.34 and 4.81 wt% H after 10 and 60 min, respectively, under 1.0 bar H2. The following reaction happened during milling under hydrogen and at the early storing-releasing cycles: 14Mg + Ni + 4NbF5 + 7H2 → MgH2 + Mg2NiH4 + Mg + 10MgF2 + 4NbH2. At a fairly low temperature of 423 K, the sample stored 0.28, 0.34, and 0.57 wt% H after 5, 10, and 60 min, respectively. The initial storing rate of 80Mg + 14Ni + 6NbF5 increased as the temperature rose from the room temperature to 573 K since the effect of thermal activation is predominant, and fell as the temperature rose from 573 K to 623 K since the effect of decrease in the driving force for storing reaction is predominant. |
| abstract_unstemmed |
Milling under hydrogen was used to prepare samples with a composition of 80 wt% Mg + 14 wt% Ni + 6 wt% NbF5 (named 80Mg + 14Ni + 6NbF5). 80Mg + 14Ni + 6NbF5 had a large effective storage capacity of hydrogen of approximately 5.6 wt% H. The activation of 80Mg + 14Ni + 6NbF5 was done after one storing-releasing cycle. At n = 2 at 593 K, 80Mg + 14Ni + 6NbF5 stored 3.92 and 5.57 wt% H after 2.5 and 60 min, respectively, under 12 bar H2, and released 2.34 and 4.81 wt% H after 10 and 60 min, respectively, under 1.0 bar H2. The following reaction happened during milling under hydrogen and at the early storing-releasing cycles: 14Mg + Ni + 4NbF5 + 7H2 → MgH2 + Mg2NiH4 + Mg + 10MgF2 + 4NbH2. At a fairly low temperature of 423 K, the sample stored 0.28, 0.34, and 0.57 wt% H after 5, 10, and 60 min, respectively. The initial storing rate of 80Mg + 14Ni + 6NbF5 increased as the temperature rose from the room temperature to 573 K since the effect of thermal activation is predominant, and fell as the temperature rose from 573 K to 623 K since the effect of decrease in the driving force for storing reaction is predominant. |
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