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Flexible, High-Performance Battery Anode

Researchers at K-State have developed a high-performance, self-standing and flexible battery anode comprising of Graphene-SiOC composite paper. This flexible composite paper is prepared using a combination of amorphous SiOC polymer-derived ceramic and reduced-Graphene Oxide sheets. The electrode made from this combination of materials has been found to demonstrate an exceptional cyclic stability and a significantly high capacity when used in a Lithium-ion battery.

The reduced Graphene Oxide used in this composite paper serves as an effective current collector and electron conductor, while the amorphous SiOC particles actively cycle Lithium ions. Therefore, the key aspect of this freestanding paper is that it eliminates the use of copper as a current collector in a Lithium-ion battery anode, while providing for a mechanically flexible electrode.

-This novel and unique anode exhibits nearly 100% efficiency in exhibiting:
    1.) A stable charge capacity of about 543 mAhg-1 at current densities of about 2400mAg-1
    2.) A stable charge capacity of about 200 mAhg-1 after 1000 cycles, at current densities of about 1600mAg-1.
-A demonstrated example of the successful use of Graphene, which provides the anode with structural stability and allows for a consistent performance at high current densities.
-Because this electrode eliminates the use of copper current collector, binder and conducting agents, it can be used to manufacture “Flexible, Light-Weight and Highly-Efficient” Lithium-ion batteries.
-Researchers regard this as arguably the first self-standing electrode comprising of a polymer-derived SiOC and Graphene.

-Battery-powered vehicles.
-Intermittent storage in power grid.
-Aerospace applications.
-Powering refrigeration panels and/or temperature-control panels.
-Powering electronic devices and appliances, particularly those which will benefit from flexible, light-weight batteries.

-PCT application filed in March 2014

Additional Details


Kansas State University

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Pending Patent

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