US 12,176,476 B2
Porous etched ion-track polymer membrane as a separator for a battery
Maria Eugenia Toimil Molares, Seeheim-Jugenheim (DE); Christina Trautmann, Darmstadt (DE); Pui Lap Jacob Lee, Darmstadt (DE); and Mathieu Morcrette, Amiens (FR)
Assigned to Centre national de la recherche scientifique, Paris (FR); UNIVERSITE DE PICARDIE JULES VERNE, Amiens (FR); GSI HELMHOLTZZENTRUM FÜR SCHWERIONENFORSCHUNG GmbH, Darmstadt Allemagne (DE); and Technische Universität Darmstadt, Darmstadt Allemagne (DE)
Appl. No. 16/622,102
Filed by Centre national de la recherche scientifique, Paris (FR); UNIVERSITE DE PICARDIE JULES VERNE, Amiens (FR); GSI HELMHOLTZZENTRUM FÜR SCHWERIONENFORSCHUNG GmbH, Darmstadt Allemagne (DE); and Technische Universität Darmstadt, Darmstadt Allemagne (DE)
PCT Filed Jun. 14, 2018, PCT No. PCT/EP2018/065901
§ 371(c)(1), (2) Date Dec. 12, 2019,
PCT Pub. No. WO2018/229235, PCT Pub. Date Dec. 20, 2018.
Claims priority of application No. 17305729 (EP), filed on Jun. 14, 2017.
Prior Publication US 2020/0136115 A1, Apr. 30, 2020
Int. Cl. H01M 10/052 (2010.01); B01D 67/00 (2006.01); B01D 71/02 (2006.01); H01M 50/403 (2021.01); H01M 50/414 (2021.01); H01M 50/451 (2021.01); H01M 50/489 (2021.01)
CPC H01M 10/052 (2013.01) [B01D 67/0032 (2013.01); B01D 67/0088 (2013.01); B01D 71/024 (2013.01); H01M 50/414 (2021.01); H01M 50/451 (2021.01); H01M 50/489 (2021.01); B01D 2325/021 (2013.01); H01M 50/403 (2021.01)] 15 Claims
 
1. A lithium-sulfur battery comprising:
a separator comprising a porous polymer etched ion track membrane;
at least one positive electrode, at least one negative electrode and at least one liquid electrolyte comprising at least one salt of a cationic ion selected in the group consisting of lithium, sodium, potassium and calcium in solution in at least one solvent, wherein:
said polymer is selected from the group comprising polyethyleneterephtalate (PET), polycarbonate (PC), polyethylene (PE), polypropylene (PP), polyimide (PI) polytetrafluoroethylene (PTFE), and polyvinylidene fluoride (PVdF),
said membrane has a frontside, a backside, and a thickness,
the frontside of said membrane is designed to face the positive electrode,
the backside of said membrane is designed to face the negative electrode,
the thickness of said membrane between said frontside and said backside is ranging from 5 to 60 μm,
said membrane comprises a plurality of nanochannels,
the majority in number of said nanochannels is continuous and has an opening tip at the frontside and an opening tip at the backside of said membrane,
the opening tip diameter of each of said nanochannels at the frontside of said membrane (DFS) ranges from 115 to 161 nm.