Effects of metal-based additives on dehydrogenation process of 2NaBH4 + MgH2 system

被引：4

作者：

Shang, Yuanyuan ^{[1
]}

Jin, Ou ^{[2
,3
]}

Puszkiel, Julian Atillio ^{[1
,4
]}

Karimi, Fahim ^{[1
]}

Dansirima, Palmarin ^{[5
]}

Sittiwet, Chongsutthamani ^{[5
]}

Utke, Rapee ^{[5
]}

Soontaranon, Siriwat ^{[6
]}

Le, Thi Thu ^{[1
]}

Gizer, Gokhan ^{[1
]}

Szabo, Dorothee Vinga ^{[2
,3
,7
]}

Wagner, Stefan ^{[2
]}

Kuebel, Christian ^{[2
,7
,8
]}

Klassen, Thomas ^{[1
,3
]}

Dornheim, Martin ^{[1
]}

Pundt, Astrid ^{[2
,3
]}

Pistidda, Claudio ^{[1
]}

机构：

[1] Helmholtz Zentrum Hereon GmbH, Inst Hydrogen Technol, Dept Mat Design, D-21502 Geesthacht, Germany

[2] Karlsruhe Inst Technol, Inst Appl Mat, D-76131 Karlsruhe, Germany

[3] Karlsruhe Inst Technol, Inst Nanotechnol, D-76344 Eggenstein Leopoldshafen, Germany

[4] Helmut Schmidt Univ, Holstenhofweg 85, D-22043 Hamburg, Germany

[5] Suranaree Univ Technol, Inst Sci, Sch Chem, Nakhon Ratchasima 3000, Thailand

[6] Synchrotron Light Res Inst, Nakhon Ratchasima 30000, Thailand

[7] Karlsruhe Inst Technol, Karlsruhe Nano Micro Facil, D-76344 Eggenstein Leopoldshafen, Germany

[8] Tech Univ Darmstadt, Joint Res Lab Nanomat, D-64206 Darmstadt, Germany

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2022年 / 47卷 / 89期

关键词：

Hydrogen storage; Borohydrides; Nucleation and growth; Kinetic modeling; HYDROGEN DESORPTION PROPERTIES; REACTIVE HYDRIDE COMPOSITES; COMPLEX HYDRIDES; THERMODYNAMIC PROPERTIES; STORAGE PERFORMANCES; SORPTION PROPERTIES; MAGNESIUM HYDRIDE; ENERGY-SYSTEM; KINETICS; NAMGH3;

D O I：

10.1016/j.ijhydene.2022.08.293

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report a systematic investigation of the effect that selected metal-based additives have on the dehydrogenation properties of the reactive hydride composite (RHC) model system 2NaBH4+MgH2. Compared to the pristine system, the material doped with 3TiCl3 center dot AlCl3 exhibits superior dehydrogenation kinetics. The addition of 3TiCl3 center dot AlCl3 alters the con-trolling mechanism of the second dehydrogenation step making it change from a two-dimensional interface controlled process to a two-dimensional nucleation and growth controlled process. The microstructural investigation of the dehydrogenated 2NaBH4-+MgH2 via high-resolution transmission electron microscopy (HRTEM) shows significant differences in the MgB2 morphology formed in the doped and undoped systems. The MgB2 has a needle-like structure in the sample doped with 3TiCl3 center dot AlCl3, which is different from the plate-like MgB2 structure in the undoped sample. Moreover, nanostructured metal-

引用

页码：37882 / 37894

页数：13

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