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Title: Direct Observation of Ion Exchange in Mechanically Activated LiH+MgB2 System Using Ultra-High Field Nuclear Magnetic Resonance Spectroscopy

Abstract

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.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
Sponsoring Org.:
USDOE
OSTI Identifier:
958454
Report Number(s):
PNNL-SA-62265
Journal ID: ISSN 0003-6951; APPLAB; 13499d; EB4202000; TRN: US201002%%153
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters, 94(14):Art No.: 141905
Additional Journal Information:
Journal Volume: 94; Journal Issue: 14; Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
08 HYDROGEN; DEHYDROGENATION; HYDROGEN; HYDROGENATION; ION EXCHANGE; MILLING; NUCLEAR MAGNETIC RESONANCE; SPECTROSCOPY; ion; fuel cell; vehicles; hydrogen; Environmental Molecular Sciences Laboratory

Citation Formats

Hu, Jian Z, Kwak, Ja Hun, Yang, Zhenguo, Wan, Xiufeng, and Shaw, Leonard D. Direct Observation of Ion Exchange in Mechanically Activated LiH+MgB2 System Using Ultra-High Field Nuclear Magnetic Resonance Spectroscopy. United States: N. p., 2009. Web. doi:10.1063/1.3110966.
Hu, Jian Z, Kwak, Ja Hun, Yang, Zhenguo, Wan, Xiufeng, & Shaw, Leonard D. Direct Observation of Ion Exchange in Mechanically Activated LiH+MgB2 System Using Ultra-High Field Nuclear Magnetic Resonance Spectroscopy. United States. https://doi.org/10.1063/1.3110966
Hu, Jian Z, Kwak, Ja Hun, Yang, Zhenguo, Wan, Xiufeng, and Shaw, Leonard D. 2009. "Direct Observation of Ion Exchange in Mechanically Activated LiH+MgB2 System Using Ultra-High Field Nuclear Magnetic Resonance Spectroscopy". United States. https://doi.org/10.1063/1.3110966.
@article{osti_958454,
title = {Direct Observation of Ion Exchange in Mechanically Activated LiH+MgB2 System Using Ultra-High Field Nuclear Magnetic Resonance Spectroscopy},
author = {Hu, Jian Z and Kwak, Ja Hun and Yang, Zhenguo and Wan, Xiufeng and Shaw, Leonard D},
abstractNote = {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.},
doi = {10.1063/1.3110966},
url = {https://www.osti.gov/biblio/958454}, journal = {Applied Physics Letters, 94(14):Art No.: 141905},
issn = {0003-6951},
number = 14,
volume = 94,
place = {United States},
year = {Mon Apr 06 00:00:00 EDT 2009},
month = {Mon Apr 06 00:00:00 EDT 2009}
}