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Supercapacitor Materials and Devices: Nickel-Cobalt Supercapacitors and Methods of Making Same

Supercapacitor

Battelle Memorial Institute

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Publications:

PDF Document PublicationView Patent here (918 KB)

PDF Document PublicationView Patent Here (416 KB)

Technology Marketing Summary

Battelle has developed materials that can be used to create a supercapacitor with performance superior to that of commercially available devices.  The common measures of performance are the energy density (energy per kg) and power density (power per kg).  This technology is based on specific metal oxide compositions synthesized in conjunction with carbon nanotubes or activated carbon.  The performance of the supercapacitor can be tuned by altering the specific metal oxide composition, allowing devices to be fabricated for specific energy storage applications.

Description

Improved capacitors containing novel electrodes are described. One electrode composition comprises mixed metal oxides of the transition metals nickel and cobalt in a molar ratio of 0.5:1 or greater, and optionally containing a binder and carbon nanotubes. The resulting capacitors can be characterized by superior properties including higher specific capacitance values at higher voltage scan rates than the prior art. Methods of forming the electrodes that produce superior results are also described.

Benefits

• Much higher energy density and power density than current devices
• Potential for extended lifetime

• Regenerative braking in transportation
• Integrated storage for photovoltaic devices
• Combined battery/supercapacitor power source for electronics applications
Applications and Industries• Regenerative braking in transportation
• Integrated storage for photovoltaic devices
• Combined battery/supercapacitor power source for electronics applications
Technology Status
Development StageAvailabilityPublishedLast Updated
PrototypeAvailable06/11/201206/11/2012

Contact BMI About This Technology

To: <Solutions@Battelle.org>