Synthesis and hydrogen storage properties of mechanically ball-milled SiC/MgH2 nanocomposites
- 1. Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube 755-8611 (Japan)
- 2. Yamaguchi Prefectural Industrial Technology Institute, 4-1-1 Asutopia, Ube 755-0195 (Japan)
Description
The hydrogen storage characteristics of SiC/MgH2 nanocomposites which are prepared by mechanical ball milling of MgH2 and SiC with cyclohexane have been studied. MgH2 as a starting material exhibited a desorption peak of hydrogen at 705 K in thermal desorption spectrometry (TDS), while the ball-milled SiC/MgH2 nanocomposites showed much lower desorption temperatures near 437 K. The hydrogen storage properties of SiC/MgH2 were significantly improved as a result of nanocomposite formation. In addition, the nanocomposites were characterized by X-ray diffraction (XRD), thermogravimetry (TG), differential scanning calorimeter (DSC) and pressure-composition isotherm (PCT) measurements. For the SiC/MgH2 nanocomposites, the reversibility of hydrogen absorption/desorption was observed, but heating above 573 K led to the irreversible breakdown of nanocomposites into MgH2 and SiC.
Availability note (English)
Available from http://dx.doi.org/10.1016/j.jallcom.2009.08.102Additional details
Identifiers
- DOI
- 10.1016/j.jallcom.2009.08.102;
- PII
- S0925-8388(09)01669-7;
Publishing Information
- Journal Title
- Journal of Alloys and Compounds
- Journal Volume
- 488
- Journal Issue
- 1
- Journal Page Range
- p. 265-269
- ISSN
- 0925-8388
- CODEN
- JALCEU
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 42005401
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ABSORPTION; CALORIMETERS; CALORIMETRY; COMMINUTION; COMPOSITE MATERIALS; CYCLOHEXANE; DESORPTION; HEATING; HYDROGEN; HYDROGEN STORAGE; MAGNESIUM HYDRIDES; NANOSTRUCTURES; SILICON CARBIDES; SPECTROSCOPY; SYNTHESIS; TEMPERATURE RANGE 0400-1000 K; THERMAL GRAVIMETRIC ANALYSIS; X-RAY DIFFRACTION
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; ALKANES; CARBIDES; CARBON COMPOUNDS; CHEMICAL ANALYSIS; COHERENT SCATTERING; CYCLOALKANES; DIFFRACTION; ELEMENTS; GRAVIMETRIC ANALYSIS; HYDRIDES; HYDROCARBONS; HYDROGEN COMPOUNDS; MAGNESIUM COMPOUNDS; MATERIALS; MEASURING INSTRUMENTS; NONMETALS; ORGANIC COMPOUNDS; QUANTITATIVE CHEMICAL ANALYSIS; SCATTERING; SILICON COMPOUNDS; SORPTION; STORAGE; TEMPERATURE RANGE; THERMAL ANALYSIS
Optional Information
- Copyright
- Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.