公开(公告)号：US20240039025A1

公开(公告)日：2024-02-01

申请号：US18296105

申请日：2023-04-05

Applicant: UOP LLC

Inventor： Jinfeng Wu ,  Stuart R. Miller

IPC: H01M8/18

CPC classification number: H01M8/188

Abstract: Rebalancing methods and systems for redox flow battery systems are described. A reductant is selectively introduced from a reductant container into one or more of a rebalancing tank, the negative electrolyte tank, or the positive electrolyte tank to reduce Fe3+ ions to Fe2+ ions. The rebalancing system can be controlled by a controller in response to one or more measured properties of the iron flow battery.

公开(公告)号：US20230118977A1

公开(公告)日：2023-04-20

申请号：US17451217

申请日：2021-10-18

Applicant: UOP LLC

Inventor： Chunqing Liu ,  Xueliang Dong ,  Jinfeng Wu ,  Stuart R. Miller

IPC: H01M8/1004 ,  H01M8/18 ,  H01M8/04119 ,  H01M8/1062

Abstract: Low cost membrane electrode assemblies (MEA) with improved coulombic efficiency (CE), reduced maintenance cost, and improved deliverable capacity have been developed for redox flow batteries and other electrochemical reaction applications. The MEA comprises: a microporous substrate membrane, first and second hydrophilic ionomeric polymer coating layers on surfaces of the microporous substrate membrane, and an electrode adhered to a second surface of the second hydrophilic ionomeric polymer coating layer. Methods of preparing the MEA and a redox flow battery system incorporating the MEA are also described.

公开(公告)号：US20240222676A1

公开(公告)日：2024-07-04

申请号：US18462617

申请日：2023-09-07

Applicant: UOP LLC

Inventor： Chunqing Liu ,  Michael G. Baddeloo ,  Hunter D. Smith ,  Jinfeng Wu

IPC: H01M8/18 ,  H01M8/1044 ,  H01M8/1048 ,  H01M8/1053 ,  H01M8/1067

CPC classification number: H01M8/188 ,  H01M8/1044 ,  H01M8/1048 ,  H01M8/1053 ,  H01M8/1067

Abstract: An ionically conductive thin film composite (TFC) membrane is described. The low cost, high performance TFC membrane comprises a first micropous support membrane, a hydrophilic ionomeric polymer coating layer on a first surface of the microporous support membrane, and a second microporous support membrane on the surface of the hydrophilic ionomeric polymer coating layer opposite the first microporous support membrane. The hydrophilic ionomeric polymer coating layer is ionically conductive. The ionomeric polymer can also be present in the micropores of the first microporous support membrane. Methods of making the TFC membranes and redox flow battery systems incorporating the TFC membranes are also described.

公开(公告)号：US20230387431A1

公开(公告)日：2023-11-30

申请号：US18315287

申请日：2023-05-10

Applicant: UOP LLC

Inventor： Marisa Meloan ,  Zara Osman ,  Russell D. Schumaker ,  Jinfeng Wu ,  Stuart R. Miller ,  David E. Gray

IPC: H01M8/04276 ,  H01M8/18 ,  H01M8/04082

CPC classification number: H01M8/04276 ,  H01M8/188 ,  H01M8/04201

Abstract: Processes for limiting circulation of precipitates in a redox flow battery system are described. The processes include filtering the negative electrolyte, or the positive electrolyte, or both in one or more filters. The filter(s) can be located in the negative electrolyte loop, the positive electrolyte loop, or in both loops. Filtering can take place in normal operation; it can also take place during refresh cycles.

公开(公告)号：US11804615B2

公开(公告)日：2023-10-31

申请号：US17451217

申请日：2021-10-18

Applicant: UOP LLC

Inventor： Chunqing Liu ,  Xueliang Dong ,  Jinfeng Wu ,  Stuart R. Miller

IPC: H01M8/1004 ,  H01M8/18 ,  H01M8/1062 ,  H01M8/10 ,  H01M8/04119

CPC classification number: H01M8/1004 ,  H01M8/04171 ,  H01M8/1062 ,  H01M8/188 ,  H01M2008/1095

Abstract: Low cost membrane electrode assemblies (MEA) with improved coulombic efficiency (CE), reduced maintenance cost, and improved deliverable capacity have been developed for redox flow batteries and other electrochemical reaction applications. The MEA comprises: a microporous substrate membrane, first and second hydrophilic ionomeric polymer coating layers on surfaces of the microporous substrate membrane, and an electrode adhered to a second surface of the second hydrophilic ionomeric polymer coating layer. Methods of preparing the MEA and a redox flow battery system incorporating the MEA are also described.

公开(公告)号：US20230163337A1

公开(公告)日：2023-05-25

申请号：US17820273

申请日：2022-08-17

Applicant: UOP LLC

Inventor： Jinfeng Wu ,  Stuart R. Miller

IPC: H01M8/18 ,  H01M8/04186 ,  H01M8/04082

CPC classification number: H01M8/188 ,  H01M8/04186 ,  H01M8/04201

Abstract: A protective layer for an electrolyte in a flow battery and an electrolyte tank having a protective layer. The protective layer includes a light oil that includes hydrophobic hydrocarbons. The light oil having a density lower than a density of the electrolyte, the hydrophobic hydrocarbons being non-reactive to the electrolyte. The protective layer may be a liquid layer or may include a substrate impregnated with the light oil. An inert gas may also be utilized in the electrolyte tank.