Electrochemical hydrogen storage in TiC0.6, not in TiC0.9 |
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| Authors: | Anne Gringoz, Nicolas Glandut,St phane Valette |
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| Affiliation: | aCeramics Laboratory SPCTS, University of Limoges, CNRS, 123 Avenue Albert Thomas, 87060 Limoges Cedex, France |
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| Abstract: | We demonstrate that hydrogen can be electrochemically loaded, at room temperature, in the non-oxide ceramic TiC0.6. A capacity of 2.9 wt.% is easily reached, corresponding to the formula TiC0.6H1.6. We also demonstrate that hydrogen absorption was not possible in TiC0.9. This surprising result is interpreted in terms of absence of long-range ordered carbon vacancies, contrary to TiC0.6. It seems that TiC0.6 behaves like an intercalation compound for hydrogen. |
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| Keywords: | Titanium carbide Non-oxide metallic ceramic Electrochemical hydrogen storage Substoichiometry Long- and short-range ordered vacancies |
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