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

Abstract

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.

Inventors:
; ; ;
Issue Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1160212
Patent Number(s):
8,852,461
Application Number:
13/294,885
Assignee:
The Regents of The University of California (Oakland, CA)
DOE Contract Number:  
AC02-05CH11231
Resource Type:
Patent
Resource Relation:
Patent File Date: 2011 Nov 11
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE

Citation Formats

Liu, Gao, Xun, Shidi, Battaglia, Vincent S, and Zheng, Honghe. Electronically conductive polymer binder for lithium-ion battery electrode. United States: N. p., 2014. Web.
Liu, Gao, Xun, Shidi, Battaglia, Vincent S, & Zheng, Honghe. Electronically conductive polymer binder for lithium-ion battery electrode. United States.
Liu, Gao, Xun, Shidi, Battaglia, Vincent S, and Zheng, Honghe. Tue . "Electronically conductive polymer binder for lithium-ion battery electrode". United States. https://www.osti.gov/servlets/purl/1160212.
@article{osti_1160212,
title = {Electronically conductive polymer binder for lithium-ion battery electrode},
author = {Liu, Gao and Xun, Shidi and Battaglia, Vincent S and Zheng, Honghe},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {10}
}

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Works referenced in this record:

An effect of side chain length on the solution structure of poly(9,9-dialkylfluorene)s in toluene
journal, April 2008


The Influence of UV Irradiation on Ketonic Defect Emission in Fluorene-Based Copolymers
journal, September 2008

  • Scheiber, Horst; Graf, Michael; Plank, Harald
  • Advanced Functional Materials, Vol. 18, Issue 17, p. 2480-2488
  • DOI: 10.1002/adfm.200800389