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1. (WO2013154623) NOVEL SEPARATORS FOR ELECTROCHEMICAL SYSTEMS

Pub. No.:    WO/2013/154623    International Application No.:    PCT/US2013/021043
Publication Date: Fri Oct 18 01:59:59 CEST 2013 International Filing Date: Fri Jan 11 00:59:59 CET 2013
IPC: H01M 2/14
H01M 2/16
Applicants: CALIFORNIA INSTITUTE OF TECHNOLOGY
ROUMI, Farshid
Inventors: ROUMI, Farshid
Title: NOVEL SEPARATORS FOR ELECTROCHEMICAL SYSTEMS
Abstract:
Provided are separator systems for electrochemical systems providing electronic, mechanical and chemical properties useful for a variety of applications including electrochemical storage and conversion. Embodiments provide structural, physical and electrostatic attributes useful for managing and controlling dendrite formation and for improving the cycle life and rate capability of electrochemical cells including silicon anode based batteries, air cathode based batteries, redox flow batteries, solid electrolyte based systems, fuel cells, flow batteries and semisolid batteries. Disclosed separators include multilayer, porous geometries supporting excellent ion transport properties, providing a barrier to prevent dendrite initiated mechanical failure, shorting or thermal runaway, or providing improved electrode conductivity and improved electric field uniformity. Disclosed separators include composite solid electrolytes with supporting mesh or fiber systems providing solid electrolyte hardness and safety with supporting mesh or fiber toughness and long life required for thin solid electrolytes without fabrication pinholes or operationally created cracks.