首页|Reactive destabilization and bidirectional catalyzation for reversible hydrogen storage of LiBH4 by novel waxberry-like nano-additive assembled from ultrafine Fe3O4 particles

Reactive destabilization and bidirectional catalyzation for reversible hydrogen storage of LiBH4 by novel waxberry-like nano-additive assembled from ultrafine Fe3O4 particles

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LiBH4 containing 18.5 wt.％H2 is an attractive high-capacity hydrogen storage material,however,it suf-fers from high operation temperature and poor reversibility.Herein,a novel and low-cost bifunctional additive,waxberry-like Fe3O4 secondary nanospheres assembled from ultrafine primary Fe3O4 nanopar-ticles,is synthesized,which exhibits significant destabilization and bidirectional catalyzation towards(de)hydrogenation of LiBH4.With an optimized addition of 30 wt.％waxberry-like Fe3O4,the system initiated dehydrogenation below 100 ℃ and released a total of 8.1 wt.％H2 to 400 ℃.After 10 cycles,a capacity retention of 70％was achieved,greatly superior to previously reported oxides-modified sys-tems.The destabilizing and catalyzing mechanisms of waxberry-like Fe3O4 on LiBH4 were systematically analyzed by phase and microstructural evolutions during dehydrogenation and hydrogenation cycling as well as density functional theory(DFT)calculations.The present work provides new insights in develop-ing advanced nano-additives with unique structural and multifunctional designs towards LiBH4 hydrogen storage.

LiBH4Hydrogen storageWaxberry-like Fe3O4DestabilizationCatalysis

S.Wang、M.H.Wu、Y.Y.Zhu、Z.L.Li、Y.X.Yang、Y.Z.Li、H.F.Liu、M.X.Gao

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Department of Material Science,Shenzhen MSU-BIT University,Shenzhen 518172,China

State Key Laboratory of Silicon and Advanced Semiconductor Materials & School of Materials Science and Engineering,Zhejiang University,Hangzhou 310027,China

Institute of Resources Utilization and Rare Earth Development,State Key Laboratory of Rare Metals Separation and Comprehensive Utilization,Guangdong Provincial Key Laboratory of Rare Earth Development and Application,Guangdong Academy of Sciences,Guangzhou 510650,China

Institute of Science and Technology for New Energy,Xi'an Technological University,Xi'an 710021,China

National Supercomputing Center in Shenzhen,Shenzhen 518055,China

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National Natural Science Foundation of ChinaNatural Science Foundation of Zhejiang ProvinceBasic and Applied Basic Research Foundation of Guangdong ProvinceBasic and Applied Basic Research Foundation of Guangdong Province

52071287LZ23E0100022021A15151106762022A1515011832

2024

10.1016/j.jmst.2023.07.020

材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCD
影响因子：0.657
ISSN：1005-0302
年,卷(期)：2024.173(6)
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