An Electron-Relay Prototype Supercapacitor Mimics Electrophorus Electricus’s Reversible Membrane Potential for Multiple-organ Discharge

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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 (ERNBIMMEA) and an asymmetric membrane design with features of free from ion channeling effect and negligible double layer potential. The results obtained by a double step chronopotentiometry (GDSCPO) method shown the Biomimetic EE device has the reversible membrane potential in both sizes of 0.2 and 0.4 cm3. It can firing high electric spikes at either end of anode and cathode with a firing rate of 2-fold higher compared with the EE’s 3.75V/s. The power and energy density for a single 0.2 cm3 cell are several magnitudes higher than the EE’s single electrocyte of 0.03 W/kg and 0.03Whr/kg. The capacitance of the 0.2cm3 biomimetic EE increased linearly from 0.25 to 13,240 µF/cm2 over 0.015 to 1000 Hz range. This study was built upon our group’s previous work (the 44th Proceedings of Power Sources Conference, 333-336, 2010. Clean Technology 204-207, 2011). The advantages of the lighter weight and the biomimetic reversible membrane potential technology may provide means for higher energy storage.

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Journal: TechConnect Briefs
Volume: Technical Proceedings of the 2012 Clean Technology Conference and Trade Show
Published: June 18, 2012
Pages: 202 - 204
Industry sector: Energy & Sustainability
Topic: Energy Storage
ISBN: 978-1-4665-6277-6