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AssigneeInstitut National de la Recherche Scientifique (INRS)
InventorsErwan BERTIN, Sébastien GARBARINO, Daniel GUAY, Manuel MARTIN, Alexandre PONROUCH
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A method for preparation of highly porous and preferentially-oriented {100} platinum on a substrate by electrodeposition in a deposition bath, comprising using a deposition potential Edep lower than ERHE+150 mV and an acidified platinum salt solution having a Pt salt concentration less than 5.0 mmole L−1 or, in presence of hydrogen, comprising limiting the concentration of Pt salts in the electrolyte to less than 5.0 mmole L−1 and controlling the temperature of the electrolyte. Preferentially-oriented {100} platinum nanowires and thin films, comprising Pt{100} in a range between about 20 and about 60% and having a roughness factor of at least 50 are produced.
A method for preparation of highly porous and preferentially-oriented {100} platinum on a substrate by electrodeposition in a deposition bath, comprising using a deposition potential Edep lower than ERHE+150 mV and an acidified platinum salt solution having a Pt salt concentration less than 5.0 mmole L−1.
A method for preparation of highly porous and preferentially-oriented {100} platinum on a substrate by electrodeposition in presence of hydrogen, comprising limiting the concentration of Pt salts in the electrolyte to less than 5.0 mmole L−1 and controlling the temperature of the electrolyte.
Preferentially-oriented {100} platinum nanowires and thin films, comprising Pt{100} in a range between about 20 and about 60% and having a roughness factor of at least 50.
Preferentially-oriented {100} platinum nanowires and thin films of claim 28, having a roughness factor comprised between about 50 and about 700 for Pt{100} thin films and between about 50 and about 1000 for Pt{100} nanowires.
Preferentially-oriented {100} platinum nanowires and thin films of claim 28, having a rugosity in a range comprised between about 8 and about 420.
Dependencies are inferred from the claim text.