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Title: Methods to fabricate variations in porosity of lithium ion battery electrode films

Patent ·
OSTI ID:1531786
; ; ; ;

A method and apparatus for forming lithium-ion batteries and battery cell components, and more specifically, to a system and method for fabricating such batteries and battery cell components using deposition processes that form three-dimensional porous structures are provided. One method comprises texturing a conductive substrate by calendering the conductive substrate between opposing wire mesh structures, forming a first layer of cathodically active material having a first porosity on the surface of the textured conductive substrate, and forming a second layer of cathodically active material having a second porosity on the first layer, wherein the second porosity is greater than the first porosity.

Research Organization:
Applied Materials, Inc., Santa Clara, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AR0000063
Assignee:
Applied Materials, Inc. (Santa Clara, CA)
Patent Number(s):
8,927,068
Application Number:
13/532,616
OSTI ID:
1531786
Resource Relation:
Patent File Date: 2012-06-25
Country of Publication:
United States
Language:
English

References (12)

Method of fabricating fuel cells and membrane electrode assemblies patent-application March 2004
Current Collectors Having Textured Coating patent-application March 2011
Reticulated and Controlled Porosity Battery Structures patent-application May 2003
Battery structures, self-organizing structures and related methods patent August 2009
Battery and non-aqueous electrolyte secondary battery using the same patent-application March 2005
Secondary cell electrode and fabrication method, and secondary cell, complex cell, and vehicle patent-application November 2006
Graded Electrode Technologies for High Energy Lithium-Ion Batteries patent-application July 2011
Reticulated and controlled porosity battery structures patent June 2009
Compressed Powder 3D Battery Electrode Manufacturing patent-application June 2011
Battery electrode substrates and methods of making the same patent March 1998
Electrophoretic assembly of electrochemical devices patent February 2010
Reticulated and controlled porosity battery structures patent August 2010

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Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
25 ENERGY STORAGE