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Titanium vanadium nitride electrode for micro-supercapacitors

Achour, A. ; Lucio-Porto, R. ; Chaker, M. ; Arman, A. ; Ahmadpourian, A. ; Soussou, M.A. ; Boujtita, M. ; Le Brizoual, L. ; Djouadi, M.A. ; Brousse, T.

Electrochemistry communications, 2017-04, Vol.77, p.40-43 [Revista revisada por pares]

Elsevier B.V

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Titanium vanadium nitride electrode for micro-supercapacitors
Autor: Achour, A. ; Lucio-Porto, R. ; Chaker, M. ; Arman, A. ; Ahmadpourian, A. ; Soussou, M.A. ; Boujtita, M. ; Le Brizoual, L. ; Djouadi, M.A. ; Brousse, T.
Materias: Chemical Sciences ; Electric power ; Engineering Sciences ; Material chemistry ; Micro-supercapacitors ; Titanium nitride ; Transition metal nitride ; Vanadium nitride
Es parte de: Electrochemistry communications, 2017-04, Vol.77, p.40-43
Descripción: Here we report on the synthesis of binary transition metal nitride electrodes based on titanium vanadium nitride (TiVN) thin films. These films were deposited by a method compatible with micro-electronic processes which consists of DC co-sputtering of vanadium (V) and titanium (Ti) targets. TiVN films with different Ti/V ratio were deposited. A dependence of the capacitance and the cycling stability with the Ti/V atomic ratio in the films was established. While V rich sample exhibits a Faradic behavior that limits its cycling ability despite a high areal and volumetric capacity, the addition of Ti in the film drastically improves the cycling ability with virtually no fade in capacitance after 10,000cycles. Furthermore, a 1.1 Ti/V ratio leads to an areal capacitance up to 15mF·cm−2 in 1M KOH electrolyte solution. Such electrodes shed light on the use of binary transition metal nitrides as candidate electrodes for micro-supercapacitor. [Display omitted] •TiVN electorchemical storage is reported for the first time.•Effect of Ti/V ratio on the electrode performances is demonstrated.•Enhancement of capacitance by factor of three without scarifying the cycling life•Capacitance of 500F·cm−3 (15 mF·cm−2) with no loss after 10,000cycles
Editor: Elsevier B.V
Idioma: Inglés

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Titanium vanadium nitride electrode for micro-supercapacitors

Achour, A. ; Lucio-Porto, R. ; Chaker, M. ; Arman, A. ; Ahmadpourian, A. ; Soussou, M.A. ; Boujtita, M. ; Le Brizoual, L. ; Djouadi, M.A. ; Brousse, T.

Elsevier B.V

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