EP 3110884 A1 20170104 - POLYMER COMPOSITIONS AS A BINDER SYSTEM FOR LITHIUM-ION BATTERIES
Title (en)
POLYMER COMPOSITIONS AS A BINDER SYSTEM FOR LITHIUM-ION BATTERIES
Title (de)
POLYMERZUSAMMENSETZUNG ALS BINDERSYSTEM FÜR LITHIUMIONENBATTERIEN
Title (fr)
COMPOSITION POLYMÉRIQUE COMME SYSTÈME DE LIANT POUR DES BATTERIES AUX IONS LITHIUM
Publication
Application
Priority
- DE 102014203750 A 20140228
- EP 2015053846 W 20150224
Abstract (en)
[origin: WO2015128328A1] The invention relates to a polymer composition P containing: 100 parts-by-weight of polymer 1, which polymer is at least 50 g/l water-soluble at 25°C and 1 bar, and can be produced via radical-initiated polymerisation of more than 95 wt.% of monomers from the group of acrylic acid, methylacrilic acid, or the esters thereof, acrylonitrile and vinylester, and, optionally, via subsequent alkaline hydrolysis; 10 to 200 parts-by-weight of polymer 2, which polymer is at least 10 g/l water-soluble at 25°C and 1 bar, has a viscosity of a 1 wt.% aqueous solution at 25°C and 1 bar at a shear rate of 10/s > 1.0 Pas, and at a shear rate of 120/s < 0.7 Pas, from the group of polysaccharides, celluloses or the carboxymethyl-, methyl-, hydroxyethyl- or hydroxypropyl derivatives thereof; and 20 to 300 parts-by-weight of polymer 3, which polymer is at least 10 g/l water-soluble at 25 °C and 1 bar, and can be produced via radical-initiated polymerisation of more than 30-95 wt.% of monomer A, from monomers from the group of acrylates or vinyl acetates, and 5-70 wt.% of monomer B of general formula R-CH=CH2, wherein R represents hydrogen, methyl, ethyl, propyl, isopropyl, phenyl or o-tolyl, and optionally, via subsequent alkaline hydrolysis. The invention also relates to: an electrode coating for a lithium-ion battery, containing the polymer composition P; a lithium-ion battery containing the polymer composition P; and the use of the polymer composition P as a binder system for the anode of a lithium-ion battery.
IPC 8 full level
C08L 23/08 (2006.01); C08L 29/04 (2006.01); H01M 4/1395 (2010.01)
CPC (source: EP KR US)
C08L 1/286 (2013.01 - KR); C08L 23/0861 (2013.01 - KR US); C08L 29/04 (2013.01 - KR US); H01M 4/0404 (2013.01 - US); H01M 4/134 (2013.01 - EP KR US); H01M 4/1395 (2013.01 - EP KR US); H01M 4/386 (2013.01 - EP KR US); H01M 4/622 (2013.01 - EP KR US); H01M 4/625 (2013.01 - US); H01M 4/661 (2013.01 - US); H01M 10/0409 (2013.01 - KR); H01M 10/052 (2013.01 - KR); H01M 10/0525 (2013.01 - US); C08L 2203/20 (2013.01 - US); C08L 2205/03 (2013.01 - US); H01M 10/0409 (2013.01 - EP US); H01M 10/052 (2013.01 - EP US); H01M 2004/021 (2013.01 - US); H01M 2004/027 (2013.01 - US); Y02E 60/10 (2013.01 - EP KR); Y02P 70/50 (2015.11 - EP)
Citation (search report)
See references of WO 2015128328A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102014203750 A1 20150903; CN 106068303 A 20161102; EP 3110884 A1 20170104; KR 20160127050 A 20161102; US 2017062827 A1 20170302; WO 2015128328 A1 20150903
DOCDB simple family (application)
DE 102014203750 A 20140228; CN 201580011194 A 20150224; EP 15707090 A 20150224; EP 2015053846 W 20150224; KR 20167026100 A 20150224; US 201515119946 A 20150224