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Title: Electronically conductive polymer binder for lithium-ion battery electrode

Patent ·
OSTI ID:1357477
; ; ;

A family of carboxylic acid group containing fluorene/fluorenon copolymers is disclosed as binders of silicon particles in the fabrication of negative electrodes for use with lithium ion batteries. These binders enable the use of silicon as an electrode material as they significantly improve the cycle-ability of silicon by preventing electrode degradation over time. In particular, these polymers, which become conductive on first charge, bind to the silicon particles of the electrode, are flexible so as to better accommodate the expansion and contraction of the electrode during charge/discharge, and being conductive promote the flow battery current.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-05CH11231
Assignee:
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
Patent Number(s):
9,653,734
Application Number:
14/458,977
OSTI ID:
1357477
Resource Relation:
Patent File Date: 2014 Aug 13
Country of Publication:
United States
Language:
English

References (25)

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Electronically Conductive Polymer Binder for Lithium-Ion Battery Electrode patent-application October 2015
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