公开(公告)号：US20200291797A1

公开(公告)日：2020-09-17

申请号：US16889248

申请日：2020-06-01

Applicant: Raytheon Technologies Corporation

Inventor： Lei Chen ,  Zhiwei Yang ,  William J. Brindley ,  Monika D. Kinstler ,  Bruce R. Saxton

IPC: F01D5/28 ,  C25D5/50 ,  C25D3/66 ,  C25D3/56 ,  C22C19/05 ,  C25D3/12 ,  C25D5/40 ,  C25D7/00 ,  F01D9/02 ,  F01D25/00

Abstract: A nickel-chromium (Ni—Cr) alloy and a method for electrodepositing the Ni—Cr alloy on a turbine engine component for dimensionally restoring the engine component are described. The engine component is restored by rebuilding wall thickness with the Ni—Cr alloy including from 2 to 50 wt % chromium balanced with nickel. The turbine component coated with the Ni—Cr alloy is heat-treated at a high temperature to homogenize composition of the alloy to mimic the base alloy and to restore materials lost during repair of the turbine component.

公开(公告)号：US20230131299A1

公开(公告)日：2023-04-27

申请号：US18088440

申请日：2022-12-23

Applicant: RAYTHEON TECHNOLOGIES CORPORATION

Inventor： James D. Saraidaridis ,  Zhiwei Yang

IPC: H01M8/04186 ,  H01M8/04082 ,  H01M8/0444 ,  H01M8/18

Abstract: A redox flow battery system with a redox flow battery includes a redox flow cell, and a supply/storage system external of the redox flow cell. The supply/storage system includes first and second electrolytes for circulation through the redox flow cell. At least the first electrolyte is a liquid electrolyte that has electrochemically active species with multiple, reversible oxidation states. A secondary cell is fluidly connected with the first electrolyte and is operable to monitor concentration of one or more of the electrochemically active species. The secondary cell includes a counter electrode, a working microelectrode, and an ionically conductive path formed by the first electrolyte between the counter electrode and the working microelectrode.

公开(公告)号：US11923583B2

公开(公告)日：2024-03-05

申请号：US17521238

申请日：2021-11-08

Applicant: Raytheon Technologies Corporation

Inventor： James D. Saraidaridis ,  Zhiwei Yang

IPC: H01M8/18 ,  H01M8/04119 ,  H01M8/04186

CPC classification number: H01M8/188 ,  H01M8/04186 ,  H01M8/04164

Abstract: In a redox flow battery (RFB), the base solvent of the electrolytes tends to migrate across the barrier layer from one electrode toward the other. This can result in a volume and concentration imbalance between the electrolytes that is detrimental to battery efficiency and capacity. Compatible electrolytes can be mixed to rebalance the system, but for incompatible electrolytes mixing is not a viable option. To this end, the RFB herein includes a separator that recovers base solvent from the vapor phase of one of the electrolytes and returns the recovered base solvent to the other electrolyte to thereby reverse the imbalance.

公开(公告)号：US20230144710A1

公开(公告)日：2023-05-11

申请号：US17521238

申请日：2021-11-08

Applicant: Raytheon Technologies Corporation

Inventor： James D. Saraidaridis ,  Zhiwei Yang

IPC: H01M8/18 ,  H01M8/04186

CPC classification number: H01M8/188 ,  H01M8/04186 ,  H01M8/04164

Abstract: In a redox flow battery (RFB), the base solvent of the electrolytes tends to migrate across the barrier layer from one electrode toward the other. This can result in a volume and concentration imbalance between the electrolytes that is detrimental to battery efficiency and capacity. Compatible electrolytes can be mixed to rebalance the system, but for incompatible electrolytes mixing is not a viable option. To this end, the RFB herein includes a separator that recovers base solvent from the vapor phase of one of the electrolytes and returns the recovered base solvent to the other electrolyte to thereby reverse the imbalance.

公开(公告)号：US20220190364A1

公开(公告)日：2022-06-16

申请号：US17119408

申请日：2020-12-11

Applicant: Raytheon Technologies Corporation

Inventor： James D. Saraidaridis ,  Zhiwei Yang

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

Abstract: A method for maintaining a redox flow includes draining a first battery electrolyte solution from a redox flow battery cell, the cell including a separator layer arranged between a first electrode and a second electrode, a first circulation loop configured to provide the first battery electrolyte solution to the first electrode and a second circulation loop configured to provide a second battery electrolyte solution to the second electrode; and flowing a non-battery electrolyte solution through the first electrode. The non-battery electrolyte removes at least a portion of the solid precipitates from at least one of the first electrode and the separator layer. The method also includes draining the non-battery electrolyte solution from the cell and returning the first battery electrolyte solution to the cell. A method for a redox flow battery and a redox flow battery are also disclosed.