公开(公告)号：US11936081B2

公开(公告)日：2024-03-19

申请号：US17454810

申请日：2021-11-13

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Divyaraj Desai ,  Michael R. Harper, Jr. ,  Heather A. Elsen ,  Jonathan D. Saathoff ,  Mehmet D. Ertas ,  Steven W. Levine

IPC: H01M8/18 ,  H01M4/36 ,  H01M4/60

CPC classification number: H01M8/188 ,  H01M4/368 ,  H01M4/60 ,  H01M2300/0002

Abstract: A redox flow battery may include: a positive half-cell comprising a catholyte; a negative half-cell comprising an anolyte; and an ion permeable membrane, wherein the ion permeable membrane separates the catholyte and the anolyte, and wherein the catholyte, the anolyte, or both comprise a low-transition temperature material comprising: a redox-active phase; and an ionically conducting organic salt.

公开(公告)号：US11888199B2

公开(公告)日：2024-01-30

申请号：US17677363

申请日：2022-02-22

Applicant: ExxonMobil Technology and Engineering Company ,  FUELCELL ENERGY, INC.

Inventor： Jonathan Rosen ,  Heather A. Elsen ,  Gabor Kiss ,  William A. Lamberti ,  William C. Horn ,  Anding Zhang ,  Timothy C. Geary ,  Adam Franco ,  Abdelkader Hilmi

IPC: H01M8/14 ,  H01M8/0202 ,  H01M8/0289 ,  H01M8/04276 ,  H01M8/04858 ,  H01M8/0612 ,  H01M8/0295

CPC classification number: H01M8/142 ,  H01M8/0202 ,  H01M8/0289 ,  H01M8/04283 ,  H01M8/04902 ,  H01M8/0618 ,  H01M8/145 ,  H01M8/0295 ,  H01M2008/147 ,  H01M2300/0051

Abstract: An elevated target amount of electrolyte is used to initially fill a molten carbonate fuel cell that is operated under carbon capture conditions. The increased target electrolyte fill level can be achieved in part by adding additional electrolyte to the cathode collector prior to start of operation. The increased target electrolyte fill level can provide improved fuel cell performance and lifetime when operating a molten carbonate fuel cell at high current density with a low-CO2 content cathode input stream and/or when operating a molten carbonate fuel cell at high CO2 utilization.

公开(公告)号：US11888187B2

公开(公告)日：2024-01-30

申请号：US16695281

申请日：2019-11-26

Applicant: ExxonMobil Technology and Engineering Company ,  FUELCELL ENERGY, INC.

Inventor： Abdelkader Hilmi ,  Timothy A. Barckholtz ,  Jonathan Rosen ,  Heather A. Elsen ,  Gabor Kiss ,  Carl A. Willman ,  Chao-Yi Yuh ,  Hossein Ghezel-Ayagh ,  Timothy C. Geary

IPC: H01M8/04119 ,  H01M8/04746 ,  H01M8/14 ,  H01M8/0444 ,  H01M8/0438 ,  H01M8/04791

CPC classification number: H01M8/04179 ,  H01M8/04753 ,  H01M8/145 ,  H01M8/0441 ,  H01M8/04388 ,  H01M8/04395 ,  H01M8/04402 ,  H01M8/04447 ,  H01M8/04455 ,  H01M8/04462 ,  H01M8/04477 ,  H01M8/04761 ,  H01M8/04798 ,  H01M8/04805 ,  H01M2008/147 ,  H01M2300/0051

Abstract: Molten carbonate fuel cells (MCFCs) are operated to provide enhanced CO2 utilization. This can increase the effective amount of carbonate ion transport that is achieved. The enhanced CO2 utilization is enabled in part by operating an MCFC under conditions that cause transport of alternative ions across the electrolyte. The amount of alternative ion transport that occurs during enhanced CO2 utilization can be mitigated by using a more acidic electrolyte.