期刊
JOURNAL OF POWER SOURCES
卷 300, 期 -, 页码 358-364出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2015.09.088
关键词
LiBH4; MoS2 spheres; Few-layered MoS2 nanosheets; Hydrogen release
资金
- National Natural Science Foundation of China [51171083, 51571124]
- Ministry of Education of China [IRT-13R30]
- 111 Project [B12015]
- Tianjin Research Program of Application Foundation and Advanced Technology [12JCYBJC10900]
In this work, 3D hierarchical flower-like MoS2 spheres are successfully fabricated via a hydrothermal method followed by a heat treatment. The obtained product is composed of few-layered MoS2 nanosheets with enlarged interlayer distance (ca. 0.66 nm) of the (002) plane. Meanwhile, the hydrogen storage properties of the as-prepared MoS2 ball milled with LiBH4 are systematically investigated. The results of temperature programmed desorption (TPD) and isothermal measurement suggest that the LiBH4-MoS2 (as-prepared) mixture exhibits favorable dehydrogenation properties in both lowering the hydrogen release temperature and improving kinetics of hydrogen release rate. LiBH4-MoS2 (as-prepared) sample (the preparation mass ratio is 1:1) starts to release hydrogen at 171 degrees C, and roughly 5.6 wt % hydrogen is released within 1 h when isothermally heated to 320 degrees C, which presents superior dehydrogenation performance compared to that of the bulk LiBH4. The excellent dehydrogenation performance of the LiBH4-MoS2 (as-prepared) mixture may be attributed to the high active site density and enlarged interlayer distance of the MoS2 nanosheets, 3D architectures and hierarchical structures. (C) 2015 Elsevier B.V. All rights reserved.
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