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Article Dans Une Revue Journal of Materials Chemistry A Année : 2014

Nano-spots induced break of the chemical inertness of boron: a new route toward reversible hydrogen storage applications

Résumé

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 ofmetallic 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 thisway for the first time. Hence, the LiBH4-M@C-HIPE(25HF) hybrid macrocellular foams (with M ¼ Pd or Au) facilitate a reversible hydrogen storage process with a remnant capacity of about 7.4 wt% H2 (related to LiBH4) after 5 desorption-absorption cycles.

Domaines

Matériaux
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Dates et versions

hal-00988199 , version 1 (07-05-2014)

Identifiants

Citer

Martin Depardieu, Raphaël Janot, Clément Sanchez, Hervé Deleuze, Christel Gervais, et al.. Nano-spots induced break of the chemical inertness of boron: a new route toward reversible hydrogen storage applications. Journal of Materials Chemistry A, 2014, 2, pp.7694-7701. ⟨10.1039/c4ta00736k⟩. ⟨hal-00988199⟩
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