Title :
Hydrogen storage properties of nanostructured graphite-based materials
Author :
Zhang, Y. ; Mann, V. S J ; Reed, D. ; Walton, A. ; Harris, I.R. ; Book, D.
Author_Institution :
Sch. of Metall. & Mater., Univ. of Birmingham, Birmingham, UK
Abstract :
Ball milling is an effective way of producing defective and nanostructured graphite. In this work, graphite was milled under 3 bar hydrogen in a tungsten carbide milling pot, and the effect of milling conditions on the microstructure and hydrogen storage properties was investigated by TGA-Mass Spectrometry, XRD, SEM and Raman spectroscopy. After milling for 10 hours, 5.5 wt% hydrogen was released upon heating under argon to 990degC. After milling for 40 hours, the graphite became significantly more disordered, and the amount of hydrogen desorbed upon heating decreased.
Keywords :
Raman spectra; X-ray diffraction; ball milling; crystal microstructure; graphite; hydrogen storage; mass spectroscopy; nanostructured materials; scanning electron microscopy; thermal analysis; C; Raman spectroscopy; SEM; TGA-mass spectrometry; XRD; ball milling; hydrogen storage properties; microstructure; nanostructured graphite-based materials; temperature 990 C; time 10 hr; time 40 hr; tungsten carbide milling pot; Ball milling; Heating; Hydrogen storage; Material storage; Microstructure; Nanostructured materials; Raman scattering; Spectroscopy; Tungsten; X-ray scattering; Hydrogen nanotechnology graphite; Mass spectroscopy; Raman spectroscopy X-ray spectroscopy; SEM; TGA;
Conference_Titel :
Sustainable Power Generation and Supply, 2009. SUPERGEN '09. International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-4934-7
DOI :
10.1109/SUPERGEN.2009.5348032
