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US 2011/0297420 A1Published application
High Performance Redox Capacitors Using Materials Possessing Non-Stoichiometry and Defect Chemical Equilibrium
AssigneeWiSys Technology Foundation, Inc.
InventorsCharles P. Gibson, Annamalai Karthikeyan
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Abstract
A pseudocapacitor employs plates having an active material of a nanoparticles sized ceramic mixed ionic-electronic conductor such as may have the nominal formula of ABO3, A2BO4, AB2O4, and AO2, where A and B are metals. The active material may be prepared to promote sublattice vacancies to provide for the storage of additional charge.
Claims20
An electrode for an electrochemical pseudocapacitor (10) comprising:
- a current collector;
- a plurality of electroactive nanoparticles in electrical communication with the current collector, the nanoparticles having mean diameter varying from 2 nm to 2 μm;
- wherein an exposed surface of the nanoparticles comprises a ceramic mixed ionic-electronic conductor.
A method of manufacturing an electrode for a pseudocapacitor (10) comprising the steps of:
- preparing a current collector (18) of electrically conductive material;
- attaching to the current conductor in electrical communication a plurality of nanoparticles (20) having mean diameter varying from 2 nm to 2 μm, an exposed surface (24) of the nanoparticles being substantially composed of an active material of ceramic mixed ionic-electronic conductor.
Dependencies are inferred from the claim text.