H-2 Plasma Reducing Ni Nanoparticles for Superior Catalysis on Hydrogen Sorption of MgH2
作者:
Dan, L (Dan, Liang) [1] , [2] ; Wang, H (Wang, Hui) [1] , [2] ; Liu, JW (Liu, Jiangwen) [1] , [2] ; Ouyang, LZ (Ouyang, Liuzhang) [1] , [2] ; Zhu, M (Zhu, Min) [1] , [2]
ACS APPLIED ENERGY MATERIALS
卷5
期4
页4976-4984
DOI10.1021/acsaem.2c00206
出版时间APR 5 2022
已索引2022-06-26
文献类型Article
摘要
Highly fine, dispersive, and active catalysts are essential for lowering the operating temperature of MgH2, a promising high-capacity material for solid-state hydrogen storage. In this work, ultrafine Ni nanoparticles (2-6 nm) are synthesized from the precursor nickel acetylacetonate (C10H14NiO4) on the surface of MgH2 by H2 plasma reduction process, followed by further ball milling. The obtained composite could rapidly release more than 6.5 wt % H within 10 min at 275 degrees C. Even at a low temperature of 225 degrees C, up to 6 wt % H could be desorbed. The hydrogenation kinetics and almost no capacity degradation over nine hydrogenation/dehydrogenation cycles. The significant improvement in the hydrogen-storage properties is attributed to the in situ formation of ultrafine and stable Mg2NiH0.3 nanocrystals during cycling. This work provides a convenient approach to synthesize ultrafine metal nanoparticles for catalytic applications in the field of high energy storage density hydride materials.
关键词
作者关键词hydrogen-storage materialsmagnesium hydridehydrogen plasmaNi nanoparticlescatalysis
Keywords PlusSTORAGE PROPERTIESKINETICSENERGYCOTITHERMODYNAMICSENHANCEMENTMECHANISMTITANIUMHYDRIDES
作者信息
通讯作者地址
Wang, Hui
(通讯作者)
South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Peoples R China
通讯作者地址
Wang, Hui
(通讯作者)
South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China
地址
1 South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Peoples R China
2 South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China
电子邮件地址mehwang@scut.edu.cn
类别/分类
研究方向ChemistryEnergy & FuelsMaterials Science