Improved dehydrogenation properties of surface-oxidized LiBH4@NiO nanostructure
| Autor: | Gokuladeepan Periyasamy, Karthigeyan Annamalai, Ajaijawahar Kaliyaperumal, Lathapriya Vellingiri |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Hydrogen Scanning electron microscope Non-blocking I/O chemistry.chemical_element Condensed Matter Physics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials chemistry Chemical engineering Transmission electron microscopy Thermal stability Dehydrogenation Electrical and Electronic Engineering Fourier transform infrared spectroscopy Selected area diffraction |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 33:9144-9154 |
| ISSN: | 1573-482X 0957-4522 |
| DOI: | 10.1007/s10854-021-07148-y |
| Popis: | In this work, flower-like NiO was synthesized by facile hydrothermal method and LiBH4@NiO was prepared by simple wet ultrasonication method. The prepared samples were characterized by X-ray diffraction, fourier transform infrared spectroscopy, high-resolution scanning electron microscope, high-resolution transmission electron microscope with energy-dispersive spectroscopy, and selected area electron diffraction pattern. The hydrogenation and dehydrogenation studies were carried out by the hydrogenation setup and simultaneous thermal analyzer (STA), respectively. Initially, the composites were tested for thermal stability by using STA before dehydrogenation study. Then the samples were hydrogenated at three different temperatures under constant 5 and 10 bar gas pressures. Hydrogen desorption thermogram of LiBH4@NiO_Ar composite exhibited hydrogen release of ~ 2.13 wt% between 50 °C and 250 °C. In comparison, hydrogenated LiBH4_Ar releases ~ 1.6 wt% of hydrogen under the same condition. From the results, it found that the dehydrogenation properties of LiBH4 is notably improved due to the addition of NiO. |
| Databáze: | OpenAIRE |
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