Title: Scaffold-free 3D porous electrode and method of making a scaffold-free 3D porous electrode

Abstract

A scaffold-free 3D porous electrode comprises a network of interconnected pores, where each pore is surrounded by a multilayer film including a first layer of electrochemically active material, one or more monolayers of graphene on the first layer of electrochemically active material, and a second layer of electrochemically active material on the one or more monolayers of graphene. A method of making a scaffold-free 3D porous electrode includes depositing one or more monolayers of graphene onto a porous scaffold to form a graphene coating on the porous scaffold, and depositing a first layer of an electrochemically active material onto the graphene coating. The porous scaffold is removed to expose an underside of the graphene coating, and a second layer of the electrochemically active material is deposited onto the underside of the graphene coating, thereby forming the scaffold-free 3D porous electrode.

Inventors:

Braun, Paul V.; Liu, Jinyun

Issue Date:

Tue Aug 28 00:00:00 EDT 2018

Research Org.:

Univ. of Illinois at Urbana-Champaign, IL (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1471404

Patent Number(s):

10062904

Application Number:

15/163,003

Assignee:

The Board of Trustees of the University of Illinois (Urbana, IL)

Patent Classifications (CPCs):

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

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H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

H01M10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes
H01M2004/021 - {Physical characteristics, e.g. porosity, surface area}
H01M2004/028 - {Positive electrodes}
H01M2004/029 - {Bipolar electrodes}
H01M4/0421 - {involving vapour deposition}
H01M4/131 - Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
H01M4/133 - Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
H01M4/134 - Electrodes based on metals, Si or alloys
H01M4/1391 - of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
H01M4/1393 - of electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
H01M4/1395 - of electrodes based on metals, Si or alloys
H01M4/38 - of elements or alloys
H01M4/483 - {for non-aqueous cells
H01M4/485 - of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
H01M4/505 - of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M4/525 - of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M4/5825 - {Oxygenated metallic slats or polyanionic structures, e.g. borates, phosphates, silicates, olivines}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

Y02E60/10 - Energy storage

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DOE Contract Number:  

FG02-07ER46471

Resource Type:

Patent

Resource Relation:

Patent File Date: 2016 May 24

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE