Patent ID: 9058931
Filing Date: 2015-06-16
Classification: H01G,H01M,Y02E

Abstract:
1. A method of forming a composite comprising the steps of: providing a prefabricated porous carbon electrode structure or a carbon foam substrate that is a prefabricated paper structure comprising a surface and pores wherein the pores have an average diameter that ranges from about 2 nm to about 1 μm; infiltrating via self-limiting electroless deposition the structure with a coating comprising iron oxide without completely filling the pores; wherein the modifying coating of iron oxide is achieved by infiltrating the prefabricated porous carbon electrode structure that is a macroscopically thick monolithic porous electrode structure of greater than about 5 μm with an aqueous K wherein the coating comprising iron oxide covers the interior and exterior surfaces of the prefabricated porous carbon electrode structure and is deposited in a homogenous form and is evenly distributed throughout the thickness of the prefabricated porous carbon electrode structure or carbon foam substrate that is a prefabricated paper structure; wherein the coating has a thickness of less than about 50 nm; and wherein the prefabricated porous carbon electrode structure or carbon foam substrate that is a prefabricated paper structure is used directly as an electrode without requiring additional conductive additives or binders to be processed into a device-suitable electrode.