Investigation of Hydrogen Storage in Single Walled Carbon Nanotubes for Fuel Cells-2
Final rept. 1 Oct 2009-30 Sep 2010
MADURAI KAMARAJ UNIV (INDIA)
Pagination or Media Count:
Single walled carbon nanotubes SWCNTs dispersed in 2-propanol are deposited on the alumina substrate using drop caste method. The deposited SWCNTs are characterized using the techniques SEM, EDS and FTIR. Then the SWCNTs are functionalized with BH3 using LiBH4 as the precursor. FTIR, XPS and CHNS techniques are use to confirm the functionalization. The functional groups are identified from FTIR studies. The various elements present in the functionalized SWCNTs are identified from XPS and CHNS studies. The functionalized samples are hydrogenated and the hydrogen storage capacity of these samples is estimated. The SWCNT deposition, functionalization with BH3 and hydrogenation are carried out successfully for the first time. The SWCNTs have been successfully functionalized with BH3 as predicted theoretically using LiBH4 as the precursor. From XPS studies, the presence of Li, B, and O are observed in our sample. Presence of BH3 is confirmed using FTIR studies. The hydrogen storage capacity of the functionalized SWCNTs is found to be 1.5 wt at 50 deg C. Hydrogenation depends upon various parameters which are to be optimized to achieve maximum hydrogen storage capacity.
- Electrochemical Energy Storage