Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 2, Issue 21, Pages 7694-7701Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ta00736k
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Funding
- French Region Ile-de-France SESAME program
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Novel LiBH4-metal-loaded carbonaceous foams have been designed to trigger reversible hydrogen storage properties. The metallic nanoparticles favour preferential wetting of LiBH4 on their surface and subsequent nucleation and growth, a configuration in which borate formation is strongly minimized. A cooperative effect between lower boron oxidation and the presence of metallic particles bearing intrinsic high heat capacity (acting as high temperature nanospots) promotes a strong improvement toward the rehydrogenation process, where the chemical inertness of boron has been overcome in this way for the first time. Hence, the LiBH4-M@C-HIPE(25HF) hybrid macrocellular foams (with M = Pd or Au) facilitate a reversible hydrogen storage process with a remnant capacity of about 7.4 wt% H-2 (related to LiBH4) after 5 desorption-absorption cycles.
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