Direct Observation of Ion Exchange in Mechanically Activated LiH+MgB2 System Using Ultra-High Field Nuclear Magnetic Resonance Spectroscopy
Journal Article
·
· Applied Physics Letters, 94(14):Art No.: 141905
The LiBH4 + MgH2 system has great potential for hydrogen vehicle applications. In this study, the reported solid-state hydrogenation system made of LiH + 1/2MgB2 has been investigated using ultra-high field nuclear magnetic resonance spectroscopy. It is found that Mg-Li ion exchange occurs within MgB2 during ball milling to form a compound of (Mg1-xLi2x)B2 which facilitates the formation of LiBH4 in the subsequent hydriding reaction. This discovery offers a scientific foundation for investigating the detailed mechanisms of solid-state hydrogenation and dehdrogenation of the LiBH4 +MgH2 system in the future.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 958454
- Report Number(s):
- PNNL-SA-62265; APPLAB; 13499d; EB4202000; TRN: US201002%%153
- Journal Information:
- Applied Physics Letters, 94(14):Art No.: 141905, Vol. 94, Issue 14; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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