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Article Dans Une Revue Journal of Power Sources Année : 2010

Elaboration of a Microstructured Inkjet-Printed Carbon Electrochemical Capacitor

Résumé

Carbon-based micro-supercapacitors dedicated to energy storage in self-powered modules were fabricated with inkjet printing technology on silicon substrate. An ink was first prepared by mixing an activated carbon powder with a PTFE polymer binder in ethylene glycol stabilized with a surfactant then deposited by inkjet on patterned gold current collectors with the substrate heated at 140°C in order to assure a good homogeneity. Electrochemical micro-capacitors with electrodes in an interdigitated configuration (40 µm wide (w), 400 µm long (L) and 40 µm interspace (i)) were fabricated, and characterized using electrochemical techniques in 1 M Et4NBF4 propylene carbonate electrolyte. These micro-devices show an excellent capacitive behavior over a wide potential range of 2.5 V for a specific capacitance per electrode of 5.1 mF.cm-2. The newly developed technology will allow the integration of the storage device as close as possible to the MEMS-based energy harvesting device, minimizing power losses through connections.
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Dates et versions

hal-01443055 , version 1 (27-01-2017)

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David Pech, Magali Brunet, Pierre-Louis Taberna, Patrice Simon, Norbert Fabre, et al.. Elaboration of a Microstructured Inkjet-Printed Carbon Electrochemical Capacitor. Journal of Power Sources, 2010, 195 (4), pp.1266-1269. ⟨10.1016/j.jpowsour.2009.08.085⟩. ⟨hal-01443055⟩
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