US 12,334,589 B2
Bipolar structures for use with electrochemical devices, and associated systems and methods
Thomas H. Madden, Glastonbury, CT (US); Daryl Ludlow, Lake George, NY (US); Karl Oleson, Seattle, WA (US); Honorio Valdes-Espinosa, Seattle, WA (US); Jian He, Shanghai (CN); XiouRui Hou, Shanghai (CN); David Hurt, Seattle, WA (US); and Jay Dandrea, Pittsburgh, PA (US)
Assigned to BENAN ENERGY, Shanghai (CN)
Filed by BenAn Energy, Shanghai (CN)
Filed on Nov. 13, 2020, as Appl. No. 17/098,216.
Claims priority of provisional application 62/935,225, filed on Nov. 14, 2019.
Prior Publication US 2021/0151725 A1, May 20, 2021
Int. Cl. H01M 50/449 (2021.01); H01M 4/02 (2006.01); H01M 4/66 (2006.01); H01M 10/058 (2010.01); H01M 50/403 (2021.01); H01M 50/431 (2021.01); H01M 50/446 (2021.01)
CPC H01M 50/449 (2021.01) [H01M 4/663 (2013.01); H01M 4/667 (2013.01); H01M 4/668 (2013.01); H01M 10/058 (2013.01); H01M 50/403 (2021.01); H01M 50/431 (2021.01); H01M 50/446 (2021.01); H01M 2004/029 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An aqueous battery system, comprising:
an anode;
a cathode; and
a bipolar structure disposed between the anode and cathode, the bipolar structure comprising
a first layer proximate the anode;
a second layer proximate the cathode; and
a film disposed between the first and second layers, the film comprising a plurality of conductive particles and a plurality of non-conductive polymers, the polymers being integrated with the conductive particles such that (i) the film forms an impermeable layer to fluid, and (ii) an outer surface of the film is compositionally homogenous;
wherein the first and second layers each comprises a graphite sheet, or each comprises 50-80% of graphite and non-conductive polymers; wherein said non-conductive polymers in said film and said first and second layers are selected from polyethylene, polypropylene, polytetrafluoroethylene (PTFE) and polyvinylidene fluoride (PVDF).