Self assembled multi-layer nanocomposite of graphene and metal oxide materials
AssigneesBattelle Memorial Institute, The Trustees of Princeton University
InventorsJun Liu, Ilhan A. Aksay, Daiwon Choi, Rong Kou, Zimin Nie, Donghai Wang, Zhenguo Yang
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Abstract
Nanocomposite materials having at least two layers, each layer consisting of one metal oxide bonded to at least one graphene layer were developed. The nanocomposite materials will typically have many alternating layers of metal oxides and graphene layers, bonded in a sandwich type construction and will be incorporated into an electrochemical or energy storage device.
Claims24
A nanocomposite material comprising at least two layers, each layer including a metal oxide bonded to at least one graphene layer.
A method for forming an ordered nanocomposite material comprising the steps of:
- providing graphene in a suspension;
- dispersing the graphene with a surfactant;
- adding a metal oxide precursor;
- precipitating the metal oxide and allowing the graphene and the metal oxide to organize into self assembled structures, thereby forming a precipitate having a series of ordered layers, wherein each layer comprises a metal oxide bonded to at least one graphene layer.
An energy storage device comprising a nanocomposite material which has at least two layers, each layer including a metal oxide bonded to at least one graphene layer.
A lithium ion battery electrode comprising a nanocomposite material which has at least two layers, each layer including a metal oxide bonded to at least one graphene layer, and wherein said nanocomposite material has a specific capacity of greater than about 400 mAh/g, and wherein each layer includes a metal oxide bonded to graphene, and wherein the layers are provided as an ordered, three dimensional assembly.
A nanocomposite material formed by the steps comprising:
- providing graphene in a suspension;
- dispersing the graphene with a surfactant;
- adding a metal oxide precursor;
- precipitating the metal oxide and allowing the graphene and the metal oxide to organize into self assembled structures thereby forming a series of ordered layers, wherein each layer comprises a metal oxide bonded to at least one graphene layer.
Dependencies are inferred from the claim text.