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Title: Large-format battery anodes comprising silicon particles

Patent ·
OSTI ID:1924928

Large-scale anodes containing high weight percentages of silicon suitable for use in lithium-ion energy storage devices and batteries, and methods of manufacturing the same, are described. The anode material described herein can include a film cast on a current collector substrate, with the film including a plurality of active material particles and a conductive polymer membrane coated over the active material particles. In some embodiments, the conductive polymer membrane comprises polyacrylonitrile (PAN). The method of manufacturing the anode material can include preparation of a slurry including the active material particles and the conductive polymer material, casting the slurry on a current collector substrate, and subjecting the composite material to drying and heat treatments.

Research Organization:
Tesla, Inc., Austin, TX (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
SC0013852
Assignee:
Tesla, Inc. (Austin, TX)
Patent Number(s):
11,398,624
Application Number:
16/340,823
OSTI ID:
1924928
Resource Relation:
Patent File Date: 10/13/2017
Country of Publication:
United States
Language:
English

References (9)

Battery Life By Controlling the Voltage Window of the Negative Electrode patent-application June 2017
Conformal Coatings of Cyclized-PAN for Mechanically Resilient Si nano-Composite Anodes journal March 2013
Stable Silicon-Ionic Liquid Interface Lithium-Ion Batteries patent-application November 2017
Anode and Secondary Battery patent-application December 2008
Negative Electrode for Non-Aqueous Electrolyte Secondary Battery, Method for Producing the Same, and Non-Aqueous Electrolyte Secondary Battery patent-application May 2010
Manufacturing of High Capacity Prismatic Lithium-Ion Alloy Anodes patent-application January 2014
Negative Electrode for Non-Aqueous-System Secondary Battery and Manufacturing Process for the Same patent-application August 2012
Si Composite Electrode with Li Metal Doping for Advanced Lithium-ion Battery patent-application October 2013
Carbonaceous Material for Anode of Nanaqueous Electrolyte Secondary Battery, Process for Producing the Same, and Anode and Nonaqueous Electrolyte Secondary Battery Obtained Using the Carbonaceous Material patent-application June 2015