期刊
ENERGIES
卷 8, 期 11, 页码 12429-12438出版社
MDPI
DOI: 10.3390/en81112326
关键词
thermal decomposition; dodecaborate; borohydride; hydrogen storage; hydrogen
资金
- JSPS KAKENHI [25709067]
- International Institute for Carbon Neutral Energy Research (WPI-I2CNER) - Japanese Ministry of Education, Culture, Sports, Science and Technology
- Grants-in-Aid for Scientific Research [25709067] Funding Source: KAKEN
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 M2B12H12-x containing the icosahedral B-12 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.
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