Battery Storage with High Energy and Rapid Charge Rates

Technology #d-1079

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Dr. Shiren Wang
Dr. Wang joined the Department of Industrial Engineering in the Whitacre College of Engineering as an assistant professor in 2007. He received a bachelor of science and a master of science from Beijing University of Aeronautics and Astronautics in 1995 and 1998 respectively, and a Doctor of Philosophy from Florida State University in 2006. He received Ed& Linda Whitacre Faculty Fellow Award in 2012, NSF CAREER Award in 2010, 3M non-tenured faculty award in 2009/2010/2011, Air Force Summer Fellowship in 2010. His research is currently focused on advanced manufacturing, nanotechnology, and sustainable energy.
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David McClure
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Patent Protection

US Patent Pending
Reduced graphene oxide-linked stacked polymer forests for high energy-density supercapacitor
Science Direct, July 11, 2013

The energy density of a storage device refers to the amount of energy that can be stored within a device of a specific size. Power density refers to the manner in which energy can be stored. The greater the power density, the faster the storage device can be charged and discharged. Typically, batteries have high energy density and low power density while capacitors have low energy density and high power density. Ideally, a storage device will have both high energy density and high power density but, generally speaking, most storage devices achieve only one of these parameters. 

This technology proposes a solution in the form of a novel nanostructured material coating for electrode surfaces.  The material’s morphology can be described as stacked nanowire arrays and graphene nanosheets that produce both high energy density and high power density devices and systems and a method whereby tailoring the number of nanowire arrays can increase the energy density while retaining the power density. 

Market Applications:

• Electric vehicles

• Power tools

• Unmanned aerial vehicles

• Communications

Features, Benefits, and Advantages:

• Novel bottom-up nanofabrication process

• High charge/discharge rate

• High energy density and high power density

Development Stage:

This system has been produced and tested and the researcher is working on scalable fabrication and device assembly.