Freestanding, heat resistant microporous film for use in energy storage devices
Abstract
Preferred embodiments of a freestanding, heat resistant microporous polymer film (10) constructed for use in an energy storage device (70, 100) implements one or more of the following approaches to exhibit excellent high temperature mechanical and dimensional stability: incorporation into a porous polyolefin film of sufficiently high loading levels of inorganic or ceramic filler material (16) to maintain porosity (18) and achieve low thermal shrinkage; use of crosslinkable polyethylene to contribute to crosslinking the polymer matrix (14) in a highly inorganic material-filled polyolefin film; and heat treating or annealing of biaxially oriented, highly inorganic material-filled polyolefin film above the melting point temperature of the polymer matrix to reduce residual stress while maintaining high porosity. The freestanding, heat resistant microporous polymer film embodiments exhibit extremely low resistance, as evidenced by MacMullin numbers of less than 4.5.
- Inventors:
- Issue Date:
- Research Org.:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1422800
- Patent Number(s):
- 9896555
- Application Number:
- 13/255,868
- Assignee:
- Amtek Research International LLC (Lebanon, OR)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08J - WORKING-UP
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- DOE Contract Number:
- FC26-05NT42403
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2010 Mar 19
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 25 ENERGY STORAGE
Citation Formats
Pekala, Richard W., Cherukupalli, Srinivas, and Waterhouse, Robert R.. Freestanding, heat resistant microporous film for use in energy storage devices. United States: N. p., 2018.
Web.
Pekala, Richard W., Cherukupalli, Srinivas, & Waterhouse, Robert R.. Freestanding, heat resistant microporous film for use in energy storage devices. United States.
Pekala, Richard W., Cherukupalli, Srinivas, and Waterhouse, Robert R.. Tue .
"Freestanding, heat resistant microporous film for use in energy storage devices". United States. https://www.osti.gov/servlets/purl/1422800.
@article{osti_1422800,
title = {Freestanding, heat resistant microporous film for use in energy storage devices},
author = {Pekala, Richard W. and Cherukupalli, Srinivas and Waterhouse, Robert R.},
abstractNote = {Preferred embodiments of a freestanding, heat resistant microporous polymer film (10) constructed for use in an energy storage device (70, 100) implements one or more of the following approaches to exhibit excellent high temperature mechanical and dimensional stability: incorporation into a porous polyolefin film of sufficiently high loading levels of inorganic or ceramic filler material (16) to maintain porosity (18) and achieve low thermal shrinkage; use of crosslinkable polyethylene to contribute to crosslinking the polymer matrix (14) in a highly inorganic material-filled polyolefin film; and heat treating or annealing of biaxially oriented, highly inorganic material-filled polyolefin film above the melting point temperature of the polymer matrix to reduce residual stress while maintaining high porosity. The freestanding, heat resistant microporous polymer film embodiments exhibit extremely low resistance, as evidenced by MacMullin numbers of less than 4.5.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {2}
}
Works referenced in this record:
Shutdown, bilayer battery separator
patent, October 1996
- Yu, Wei-Ching; Geiger, Mark
- US Patent Document 5,565,281
Very thin microporous material
patent, September 1999
- Ondeck, Raymond R.; Pekala, Richard W.; Schwarz, Richard A.
- US Patent Document 5,948,557
Puncture-resistant polyolefin membranes
patent, August 2000
- Radovanovic, Philip D.; Thomas, Scott D.
- US Patent Document 6,096,213
Electrically conductive, freestanding microporous polymer sheet
patent, February 2003
- Emanuel, James E.; Young, James; Pekala, Richard W.
- US Patent Document 6,524,742
Battery separators with reduced splitting propensity
patent, August 2003
- Callahan, Robert W.; Call, Ron W.; Harleson, Ken J.
- US Patent Document 6,602,593
Method of forming an electrically conductive, freestanding microporous polymer sheet
patent-application, January 2004
- Emanuel, James; Young, James; Pekala, Richard W.
- US Patent Application 10/371993; 20040010909
Antioxidant-coated lead acid battery separators having improved electrical and mechanical properties
patent-application, March 2004
- Pekala, Richard W.
- US Patent Application 10/679230; 20040058142
Porous film and separator for battery using the same
patent-application, March 2006
- Hoshida, Daijiro; Takahashi, Tsutomu; Yamada, Takeshi
- US Patent Application 11/245047; 20060055075
Microporous material and a method of making same
patent-application, June 2006
- Millere, Eric H.; Yaritz, Joseph G.; Demeuse, Mark T.
- US Patent Application 11/006333; 20060121269
Optimized microporous structure of electrochemical cells
patent-application, December 2007
- Beard, Kirby
- US Patent Application 11/820140; 20070292750
Cooling device for electric apparatus mounted on vehicle
patent-application, October 2008
- Kubo, Masahiko
- US Patent Application 12/081495; 20080257624
Fuel Cell System and Mobile Body
patent-application, March 2009
- Aso, Shinji; Saito, Tomohiro
- US Patent Application 12/085169; 20090068514
Separator for Non-Aqueous Secondary Battery, Process for Producing Same, and Non-Aqueous Secondary Battery
patent-application, March 2010
- Nishikawa, Satoshi
- US Patent Application 12/513964; 20100068612