公开(公告)号：US20240021857A1

公开(公告)日：2024-01-18

申请号：US18349205

申请日：2023-07-10

Applicant: DENSO CORPORATION

Inventor： Hironori TATSUMI ,  Nobuhiko MATSUDA ,  Shota KINOSHITA ,  Atsuhito OTA

IPC: H01M8/0656 ,  H01M4/88 ,  H01M4/86

CPC classification number: H01M8/0656 ,  H01M4/8875 ,  H01M4/8626

Abstract: An electrochemical cell includes a working electrode and a counter electrode. The working electrode is configured to adsorb and desorb a recovery target gas from a mixed gas containing the recovery target gas by electrochemical reaction. The counter electrode is configured to exchange electrons with the working electrode. The working electrode has a volume porosity that is equal to or greater than a volume porosity of the counter electrode.

公开(公告)号：US20230387425A1

公开(公告)日：2023-11-30

申请号：US18308708

申请日：2023-04-28

Applicant: DENSO CORPORATION

Inventor： Atsuhito OTA ,  Shota KINOSHITA ,  Hironori TATSUMI ,  Nobuhiko MATSUDA

IPC: H01M6/02 ,  B01D53/32 ,  H01M4/04 ,  H01M4/62

CPC classification number: H01M6/02 ,  B01D53/326 ,  H01M4/0416 ,  H01M4/621 ,  B01D2313/345

Abstract: An electrochemical cell includes a working electrode and a counter electrode. A voltage is applied between the working electrode and the counter electrode such that electrons are supplied from the counter electrode to the working electrode so as to capture a target species. An electrode film of at least one of the working electrode and the counter electrode has an active material, a conductive aid and a binder. At least a part of the active material is contained as an agglomerate in the electrode film, and the maximum diameter of the aggregate is less than or equal to 10 μm.

公开(公告)号：US20230381711A1

公开(公告)日：2023-11-30

申请号：US18308724

申请日：2023-04-28

Applicant: DENSO CORPORATION

Inventor： Shota KINOSHITA ,  Shigehiko SUGIURA ,  Atsuhito OTA ,  Hironori TATSUMI ,  Nobuhiko MATSUDA

IPC: B01D53/04

CPC classification number: B01D53/0446 ,  B01D2257/504

Abstract: A gas recovery system configured to recover a recovery target gas from a gas mixture includes electrochemical cells and a gas passage between the electrochemical cells. The electrochemical cell has a working electrode including an adsorbent, and a counter electrode configured to exchange electrons with the working electrode. Electron donation occurs from the counter electrode to the working electrode when a voltage is applied between the working electrode and the counter electrode, such that the adsorbent adsorbs the recovery target gas along with the electron donation. At least one of the working electrode or the counter electrode includes an electrode film. The electrode film includes regions, each of which having a size smaller than a size of the electrochemical cell, and a reducing part that reduces warpage of the electrode film is located adjacent to the regions.

公开(公告)号：US20250135396A1

公开(公告)日：2025-05-01

申请号：US19009379

申请日：2025-01-03

Applicant: DENSO CORPORATION

Inventor： Nobuhiko MATSUDA ,  Hidenori ECHIZEN ,  Hiroshi KATO ,  Shota KINOSHITA ,  Hironori TATSUMI

IPC: B01D53/32 ,  B01D53/62 ,  C01B32/50

Abstract: An electrochemical cell is configured by laminating a working electrode, a counter electrode, a separator, a working electrode collector material and a counter electrode current collector. The working electrode adsorbs the gas to be recovered. The counter electrode transfers electrons to and from the working electrode. The separator is disposed between the working electrode and the counter electrode to prevent physical contact between the working electrode and the counter electrode to suppress electrical shorts from occurring. The working electrode current collector contacts the working electrode and electrically connects the working electrode to the counter electrode. The counter electrode current collector contacts the counter electrode and electrically connects the working electrode to the counter electrode. The counter electrode sealing member is disposed to cover the counter electrode and the counter electrode current collector with respect to the electrochemical cell to suppress contact between the mixed gas and the counter electrode.

公开(公告)号：US20230381714A1

公开(公告)日：2023-11-30

申请号：US18308716

申请日：2023-04-28

Applicant: DENSO CORPORATION

Inventor： Shota KINOSHITA ,  Hironori TATSUMI ,  Nobuhiko MATSUDA

IPC: B01D53/32

CPC classification number: B01D53/326 ,  B01D2257/504 ,  B01D2256/22

Abstract: A gas recovery system includes: a working electrode that adsorbs a recovery target gas; a counter electrode that exchanges electrons with the working electrode; a working-electrode current collector in contact with the working electrode to electrically connect the working electrode and the counter electrode; and a counter-electrode current collector in contact with the counter electrode to electrically connect the working electrode and the counter electrode. The working-electrode current collector has a working electrode opening to expose the working electrode to the gas mixture. The counter-electrode current collector has a counter electrode opening to expose the counter electrode to the gas mixture. An opening area of the counter electrode opening is smaller than an opening area of the working electrode opening.