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Improved reversible dehydrogenation properties of MgH2 by the synergetic effects of graphene oxide-based porous carbon and TiCl3
Wang, KK; Wu, GL; Cao, HJ; Li, HL; Zhao, XS; Wang, KK (reprint author), Qingdao Univ, Coll Mat Sci & Engn, Inst Mat Energy & Environm, Growing Basis State Key Lab,Lab New Fiber Mat & M, Qingdao 266071, Peoples R China.
2018-04-12
Source PublicationINTERNATIONAL JOURNAL OF HYDROGEN ENERGY
ISSN0360-3199
Volume43Issue:15Pages:7440-7446
AbstractIn this study, we used a combination of graphene oxide-based porous carbon (GC) and titanium chloride (TiCl3) to improve the reversible dehydrogenation properties of magnesium hydride (MgH2). Examining the effects of GC and TiCl3 on the hydrogen storage properties of MgH2, the study found GC was a useful additive as confinement medium for promoting the reversible dehydrogenation of MgH2. And TiCl3 was an efficient catalytic dopant. A series of controlled experiments were carried out to optimize the sample preparation method and the addition amount of GC and TiCl3. In comparison with the neat MgH2 system, the MgH2/GC-TiCl3 composite prepared under optimized conditions exhibited enhanced dehydrogenation kinetics and lower dehydrogenation temperature. A combination of phase/microstructure/chemical state analyses has been conducted to gain insight into the promoting effects of GC and TiCl3 on the reversible dehydrogenation of MgH2. Our study found that GC was a useful scaffold material for tailoring the nanophase structure of MgH2. And TiCl3 played an efficient catalytic effect. Therefore, the remarkably improved dehydrogenation properties of MgH2 should be attributed to the synergetic effects of nanoconfinement and catalysis. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.; In this study, we used a combination of graphene oxide-based porous carbon (GC) and titanium chloride (TiCl3) to improve the reversible dehydrogenation properties of magnesium hydride (MgH2). Examining the effects of GC and TiCl3 on the hydrogen storage properties of MgH2, the study found GC was a useful additive as confinement medium for promoting the reversible dehydrogenation of MgH2. And TiCl3 was an efficient catalytic dopant. A series of controlled experiments were carried out to optimize the sample preparation method and the addition amount of GC and TiCl3. In comparison with the neat MgH2 system, the MgH2/GC-TiCl3 composite prepared under optimized conditions exhibited enhanced dehydrogenation kinetics and lower dehydrogenation temperature. A combination of phase/microstructure/chemical state analyses has been conducted to gain insight into the promoting effects of GC and TiCl3 on the reversible dehydrogenation of MgH2. Our study found that GC was a useful scaffold material for tailoring the nanophase structure of MgH2. And TiCl3 played an efficient catalytic effect. Therefore, the remarkably improved dehydrogenation properties of MgH2 should be attributed to the synergetic effects of nanoconfinement and catalysis. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
description.department[wang, kuikui ; wu, guanglei ; cao, haijie ; li, hongliang ; zhao, xiusong] qingdao univ, coll mat sci & engn, inst mat energy & environm, growing basis state key lab,lab new fiber mat & m, qingdao 266071, peoples r china ; [wang, kuikui] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, liaoning, peoples r china ; [zhao, xiusong] univ queensland, sch chem engn, brisbane, qld 4074, australia
KeywordHydrogen Sorption Kinetics Magnesium Hydride 2libh(4)-mgh2 Composite Storage Performance Desorption Nano Nanoparticles Nanosheets Destabilization Enhancement
Subject AreaChemistry, Physical ; Electrochemistry ; Energy & Fuels
Funding OrganizationChina Postdoctoral Science Foundation [2016M592138]; Natural Science Foundation of Shandong Province [ZR2016EMB15]; Qingdao Postdoctoral Applied Research Project [2016018]; National Outstanding Youth Science Foundation of China [51125003]; Thousand Talents Plan; Taishan Scholar's Advantageous and Distinctive Discipline Program of Shandong Province; world-Class Discipline Program of Shandong Province
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79366
Collection中国科学院金属研究所
Corresponding AuthorWang, KK (reprint author), Qingdao Univ, Coll Mat Sci & Engn, Inst Mat Energy & Environm, Growing Basis State Key Lab,Lab New Fiber Mat & M, Qingdao 266071, Peoples R China.
Recommended Citation
GB/T 7714
Wang, KK,Wu, GL,Cao, HJ,et al. Improved reversible dehydrogenation properties of MgH2 by the synergetic effects of graphene oxide-based porous carbon and TiCl3[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2018,43(15):7440-7446.
APA Wang, KK,Wu, GL,Cao, HJ,Li, HL,Zhao, XS,&Wang, KK .(2018).Improved reversible dehydrogenation properties of MgH2 by the synergetic effects of graphene oxide-based porous carbon and TiCl3.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,43(15),7440-7446.
MLA Wang, KK,et al."Improved reversible dehydrogenation properties of MgH2 by the synergetic effects of graphene oxide-based porous carbon and TiCl3".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 43.15(2018):7440-7446.
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