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Vol. 15, Special Issue, October 2012, pp. 42-48


Selected papers from Nanotech Conference & Expo (NanoTech' 2012),
18-21 June 2012, Santa Clara, California, USA




Electron-Relay Supercapacitor Mimics Electrophorus Electricus’s Reversible Membrane Potential
for a High Rate Discharge Pulse


* Ellen T. CHEN and Christelle NGATCHOU

Advanced Biomimmetic Sensors, Inc. 20271 Goldenrod Lane #2064

Germantown, MD 20876, USA

* Tel.: 301-528-2273

E-mail: Ellenchen@nanobiomimeticsensors.com



Received: 14 September 2012   /Accepted: 1 October 2012   /Published: 8 October 2012

Digital Sensors and Sensor Sysstems


Abstract: Electrophorus Electricus (EE) is known to discharge electric voltage through multiple organs based on Reversible Membrane Potential (RMP). We report a new type of supercapacitor for mimicking the EE’s RMP based on an Electron-Relay Nano-Biomimetic Membrane Electrode Assembling (ERNBMEA) and an asymmetric membrane design with features free from ion channeling effect and a negligible double layer potential effect. The results shown the newly developed device can fire high rate electric spikes at both ends of the anode and cathode with a firing rate of 2-fold higher compared with the EE’s 3.75 V/s. The capacitance of the 0.2 cm3 biomimetic EE increased linearly from 0.25 to 13,240 µF/cm2 over 0.015 to 1000 Hz range. At 120 Hz, the high storage capacitance is 5,140 µF/cm2 that is an order of magnitude higher over the reported double-layer capacitor.


Keywords: Electron-relay supercapacitor, Reversible membrane potential, Nano-biomimetic Electrophorus Electricus’s device, High rate electric firing pulse, Asymmetric design



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