Improving the hydrogen storage performance of lithium borohydride by Ti3C2 MXene. (8th November 2019)

• Record Type: Journal Article
• Authors: Fan, Yanping; Chen, Dandan; Liu, Xianyun; Fan, Guangxin; Liu, Baozhong
• Is Part Of: International journal of hydrogen energy. Volume 44:Number 55(2019)
• Page Start: 29297
• Page End: 29303
• Publication Date: 2019-11-08
• Subjects: LiBH4 -- Ti3C2 MXene -- Hydrogen storage material -- Kinetics; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2019.01.011
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Two-dimensional layered material of Ti3 C2 has been used to improve the hydrogen desorption properties of LiBH4 . The results of temperature-programmed dehydrogenation (TPD) and isotherm dehydrogenation (TD) demonstrate that adding the Ti3 C2 contributes to the hydrogen storage performance of LiBH4 . The dehydrogenation temperature decreases and the dehydrogenation rate increases with increasing the adding amounts of Ti3 C2 . The onset dehydrogenation temperature of LiBH4 + 40 wt% Ti3 C2 composite is 120 °C and approximately 5.37 wt% hydrogen is liberated within 1 h at 350 °C. Furthermore, the activation energy of LiBH4 + wt.% Ti3 C2 is also greatly reduced to 70.3 kJ/mol, much lower than that of pure LiBH4 . The remarkable dehydrogenation property of the LiBH4 + 40 wt% Ti3 C2 may be due to the layered active Ti-containing Ti3 C2 and the high surface area of MXene. Highlights: Ti3 C2 MXene significantly improve the dehydrogenation of LiBH4 . Onset dehydrogenation temperature of LiBH4 is reduced to 120 °C. 5.37 wt% hydrogen in 40% Ti3 C2 composite is liberated within 1 h at 350 °C. Improved dehydrogenation is due to layered and high surface area of MXene Ti3 C2 .