On-chip micro-supercapacitors for operation in a wide temperature range

On-chip micro-supercapacitors for operation in a wide temperature range

Peihua Huanga, b, c, David Pecha, b, Rongying Linc, d, John K. McDonoughe, f, Magali Bruneta, b, Pierre-Louis Tabernac, d,

Yury Gogotsie, f, Patrice Simonc, d

a CNRS, LAAS, 7 avenue du colonel Roche, F-31400 Toulouse, France

b Univ de Toulouse, LAAS, F-31400 Toulouse, France

c Univ Paul Sabatier, CIRIMAT UMR-CNRS 5085, F-31062 Toulouse Cedex 4, France

d Réseau sur le Stockage Electrochimique de l'Energie (RS2E), FR CNRS n°3459, France

e Department of Materials Science Engineering, Drexel University, Philadelphia, PA 19104, USA

f A.J. Drexel Nanotechnology Institute, Drexel University, Philadelphia, PA 19104, USA


Onion-like carbon (OLC) based micro-supercapacitor electrodes prepared by electrophoretic deposition (EPD) were combined with a eutectic mixture of ionic liquids (IL), a) Schematic picture of on-chip micro-supercapacitor with OLC as electrode material prepared by EPD and b) microscopic picture.producing a micro-supercapacitor which is able to function from − 50 °C to 80 °C. This device was electrochemically characterized by cyclic voltammetry and electrochemical impedance spectroscopy at different scan rates and different temperatures.

Picture (at left ) shows: a) Schematic picture of on-chip micro-supercapacitor with OLC as electrode material prepared by EPD and b) microscopic picture.

At 20 °C, a capacitance of 1.1 mF.cm− 2 per footprint area of device at 200 mV.s− 1 within 3.7 V was measured, hence a specific energy of 15 mJ.cm− 2 and a specific power of 240 mW.cm− 2. At − 50 °C, 76% of the capacitance was maintained at 10 mV.s− 1 within 3.7 V.By integrating with IL, this micro-supercapacitor can be potentially used in portable electronic devices that are required to work under temperature extremes.


• Micro-supercapacitor fabrication using ionic liquid mixture as electrolyte
• Micro-supercapacitor with large voltage window (3.7 V at room temperature)
• Micro-supercapacitor with large operation temperature (− 50 °C to + 80 °C)

Keywords: Micro-supercapacitors; Ionic liquid electrolyte; Large voltage window; Large operation temperature

On-chip micro-supercapacitors for operation in a wide temperature range. Peihua Huang, David Pech, Rongying Lin, John K McDonough, Magali Brunet, Pierre-Louis Taberna, Yury Gogotsi, Patrice Simon. Electrochemistry Communications, Volume 36, November 2013, Pages 53–56.



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