公开(公告)号：US20230369612A1

公开(公告)日：2023-11-16

申请号：US18224124

申请日：2023-07-20

申请人： HYDROLITE LTD

发明人： Charly David AZRA ,  Miles PAGE ,  Alina AMEL ,  Ervin TAL-GUTELMACHER

IPC分类号： H01M8/0228 ,  H01M8/1004 ,  C25B13/07 ,  C25B13/08

CPC分类号： H01M8/0228 ,  H01M8/1004 ,  C25B13/07 ,  C25B13/08

摘要： Membrane assemblies and separation layer(s) for electrochemical devices such as fuel cells and/or electrolyzers are provided, as well as their production methods. The separation layer(s) include surface-charged particles such as LDH particles to strengthen the membranes, enhance their ionic conductivity and prevent or reduce membrane dehydration and/or chemical degradation. In various configurations a single or few, relatively thick separation layer(s) with surface-charged particles may be used, while in other configurations alternating layers of ionomeric material and layers with surface-charged particles may be used, optimizing ionic conductivity with mechanical strength. Thin protective layers with solids content up to 100% may be set adjacent to the electrodes, and the orientation of the surface-charged particles may be set to enhance the ion conductivity of the respective layer.

公开(公告)号：US20240317952A1

公开(公告)日：2024-09-26

申请号：US18611853

申请日：2024-03-21

申请人： HYDROLITE LTD

发明人： Charly David AZRA ,  Yauhen AKAYEU ,  Amiram SISSO

IPC分类号： C08J5/22 ,  B01D67/00 ,  B01D69/02 ,  B01D71/26 ,  B01D71/28 ,  B01D71/78 ,  B01J41/05 ,  B01J41/14 ,  B01J47/12 ,  C02F1/46 ,  C08J3/00 ,  C08J3/24 ,  C08J7/12 ,  C25B13/08 ,  H01M8/0221

CPC分类号： C08J5/2287 ,  B01D67/0006 ,  B01D69/02 ,  B01D71/26 ,  B01D71/281 ,  B01D71/78 ,  B01J41/05 ,  B01J41/14 ,  B01J47/12 ,  C02F1/4604 ,  C08J3/005 ,  C08J3/24 ,  C08J7/123 ,  C25B13/08 ,  H01M8/0221 ,  B01D2323/081 ,  B01D2323/30 ,  B01D2323/385 ,  B01D2323/60 ,  B01D2325/42 ,  C08J2323/06 ,  C08J2327/04 ,  C08J2353/02 ,  C08J2423/06 ,  C08J2427/04 ,  C08J2453/02

摘要： Methods of preparing reinforced anion exchange membranes are provided, as well as produced membranes and corresponding devices utilizing the membranes. Methods comprise compounding a halide-functionalized polymer (selected to react with amines to yield anion-conducting quaternary amine groups) with thermoplastic polymer(s) (selected to support and/or reinforce the membrane), and with copolymer(s) (selected to enhance the compounding of the polymers)—by heating, mixing and cooling—to form blend pellets, extruding the blend pellets to form a blend film, cross-linking polymer(s), and functionalizing the blend film to prepare the anion exchange membrane. Functionalization comprises a quaternization step comprising reacting halogen groups of the first polymer with tertiary amines to produce the quaternary amine groups with ion-exchange functionality. Reinforced anion exchange membranes are provided, which are produced by the disclosed methods, functionalized to yield a membrane for fuel cell(s), electrolyzer(s), reversible electrochemical device(s), desalination unit(s), etc.

公开(公告)号：US20230369626A1

公开(公告)日：2023-11-16

申请号：US18224099

申请日：2023-07-20

申请人： HYDROLITE LTD

发明人： Charly David AZRA ,  Miles Page ,  Ervin Tal-Gutelmacher

IPC分类号： H01M8/14 ,  H01M8/22 ,  H01M8/1004 ,  H01M16/00

CPC分类号： H01M8/141 ,  H01M8/227 ,  H01M8/1004 ,  H01M16/003

摘要： Membrane assemblies for electrochemical devices are provided, along with methods and system for fabricating them. Membrane assemblies comprise anode layer(s) and cathode layer(s), separated by membranous separation layer(s) and all embedded in continuous polymerized ionomer material. In production, during continuous deposition of ionomer material on a substrate (e.g., by electrospinning or electrospraying), consecutive deposition stages of catalyst material and optionally binder material are performed. For example, anode particles, binder material and cathode particles may be deposited (e.g., by electrospraying or electrospinning, respectively) consecutively during the continuous deposition o the ionomer material. Self-refueling power-generating system are provided, which include reversible anion exchange membrane devices with disclosed membrane assemblies.

公开(公告)号：US20240120518A1

公开(公告)日：2024-04-11

申请号：US18543001

申请日：2023-12-18

申请人： HYDROLITE LTD

发明人： Mordechai KATTAN ,  Aviv ASHDOT ,  Ortal TIURIN BURSHTEIN ,  Charly David AZRA ,  Ervin TAL-GUTELMACHER

IPC分类号： H01M8/0656 ,  H01M4/88 ,  H01M8/04291 ,  H01M8/249

CPC分类号： H01M8/0656 ,  H01M4/8807 ,  H01M8/04291 ,  H01M8/249

摘要： Oxygen electrodes, production methods and reversible, alkaline or anion exchange membrane (AEM) electrochemical devices are provided. The oxygen electrodes are operable in the reversible devices both as cathodes of a fuel cell supporting an oxygen reduction reaction (ORR), and as anodes of an electrolyzer supporting an oxygen evolution reaction (OER). The oxygen electrodes comprise a substrate layer which may be a porous transport layer (PTL), possibly coated and/or hydrophobized, or a membrane; and a blend of catalysts which is deposited on the substrate layer to form a catalyst layer, and includes ORR catalyst (e.g., a platinum group metal), OER catalyst (e.g., nickel-based particles), and possibly binders such as ionomers, PTFE or other polymers that are resistant in alkaline environment, but with the catalyst layer and the substrate layer being devoid of elemental carbon.