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Energies 2015, 8(11), 12429-12438; doi:10.3390/en81112326

Thermal Decomposition of Anhydrous Alkali Metal Dodecaborates M2B12H12 (M = Li, Na, K)

1
,
2,3,* and 1,2,3
1
Department of Mechanical Engineering, Faculty of Engineering, Kyushu University, Fukuoka 819-0395, Japan
2
International Research Center for Hydrogen Energy, Kyushu University, Fukuoka 819-0395, Japan
3
International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Fukuoka 819-0395, Japan
*
Author to whom correspondence should be addressed.
Academic Editor: Craig M. Jensen
Received: 16 July 2015 / Revised: 8 October 2015 / Accepted: 22 October 2015 / Published: 4 November 2015
(This article belongs to the Special Issue Hydrides: Fundamentals and Applications)
View Full-Text   |   Download PDF [2154 KB, uploaded 4 November 2015]   |  

Abstract

Metal dodecaborates M2/nB12H12 are regarded as the dehydrogenation intermediates of metal borohydrides M(BH4)n that are expected to be high density hydrogen storage materials. In this work, thermal decomposition processes of anhydrous alkali metal dodecaborates M2B12H12 (M = Li, Na, K) synthesized by sintering of MBH4 (M = Li, Na, K) and B10H14 have been systematically investigated in order to understand its role in the dehydrogenation of M(BH4)n. Thermal decomposition of M2B12H12 indicates multistep pathways accompanying the formation of H-deficient monomers M2B12H12x containing the icosahedral B12 skeletons and is followed by the formation of (M2B12Hz)n polymers. The decomposition behaviors are different with the in situ formed M2B12H12 during the dehydrogenation of metal borohydrides. View Full-Text
Keywords: thermal decomposition; dodecaborate; borohydride; hydrogen storage; hydrogen thermal decomposition; dodecaborate; borohydride; hydrogen storage; hydrogen
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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He, L.; Li, H.-W.; Akiba, E. Thermal Decomposition of Anhydrous Alkali Metal Dodecaborates M2B12H12 (M = Li, Na, K). Energies 2015, 8, 12429-12438.

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