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A high-performance hydrogen generation system: Hydrolysis of LiBH4-based materials catalyzed by transition metal chlorides
Chen,Kang1; Ouyang,Liuzhang1,2; Wang,Hui1; Liu,Jiangwen1; Shao,Huaiyu3; Zhu,Min1,2
2020-08
Source PublicationRenewable Energy
ISSN0960-1481
Volume156Pages:655-664
Abstract

Lithium borohydride (LiBH) has received much attention due to its high hydrogen density of 18.5 wt%. However, in the hydrolytic process for hydrogen supply, the sluggish kinetics of LiBH and the agglomeration of by-product greatly limit its wide utilization. In this work, transition-metal chlorides (CoCl, NiCl, FeCl) are firstly adopted to explore the hydrogen liberation behaviors of LiBH. The hydrolysis kinetics can be well-controlled by tuning the concentration of chlorides. Among the above chlorides, CoCl displays much faster reaction kinetics, delivering a hydrogen generation rate ranging from 421 to 41701 mL min g with a maximum conversion of 95.3%, much higher than the value of 225 mL min g H with Pt–LiCoO. The maximum gravimetric hydrogen density may reach 8.7 wt% at HO/LiBH = 2–6 mol/mol. Furthermore, NH is introduced to solve the issue of uncontrollable kinetics of LiBH by forming its ammoniates, where LiBH·NH catalyzed by CoCl could stably release over 4350 mL g H per unit weight of LiBH within 30 min at 40 °C, with a hydrogen density of ∼7.1 wt% and a hydrogen yield of 97.0%. Our approaches adopting non-noble metal chlorides are efficient and affordable for hydrogen supply to PEMFCs via hydrolysis of LiBH-based materials.

KeywordCatalyst Hydrogen Generation Hydrolysis Libh4 Libh4·nh3 Transition-metal Chlorides
DOI10.1016/j.renene.2020.04.030
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaScience & Technology - Other Topics ; Energy & Fuels
WOS SubjectGreen & Sustainable Science & Technology ; Energy & Fuels
WOS IDWOS:000540378500055
Scopus ID2-s2.0-85084091317
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Cited Times [WOS]:13   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorOuyang,Liuzhang; Shao,Huaiyu
Affiliation1.South China University of Technology
2.China-Australia Joint Laboratory for Energy & Environmental Materials,Key Laboratory of Fuel Cell Technology of Guangdong Province
3.University of Macau
Corresponding Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Chen,Kang,Ouyang,Liuzhang,Wang,Hui,et al. A high-performance hydrogen generation system: Hydrolysis of LiBH4-based materials catalyzed by transition metal chlorides[J]. Renewable Energy,2020,156:655-664.
APA Chen,Kang,Ouyang,Liuzhang,Wang,Hui,Liu,Jiangwen,Shao,Huaiyu,&Zhu,Min.(2020).A high-performance hydrogen generation system: Hydrolysis of LiBH4-based materials catalyzed by transition metal chlorides.Renewable Energy,156,655-664.
MLA Chen,Kang,et al."A high-performance hydrogen generation system: Hydrolysis of LiBH4-based materials catalyzed by transition metal chlorides".Renewable Energy 156(2020):655-664.
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