IP Library Granted Patent US 11,424,457
Granted Patent B2
US 11,424,457 · App. 16/625,650 · Granted Aug 23, 2022

Method for producing a gas diffusion electrode and gas diffusion electrode

Inventors: Martin Kalmar Hansen (Vanløse, DK); Kasper Tipsmark Therkildsen (Lille-Skensved, DK)
Assignee: SIEMENS ENERGY GLOBAL GMBH & CO. KG
H01M4/8807H01M4/8605H01M4/8896H01M8/0239H01M8/0245
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Quick Facts
Patent No.
US 11,424,457
App. No.
16/625,650
Granted
Aug 23, 2022
Kind
B2
Abstract

Various embodiments include a method for producing a gas diffusion electrode, the method comprising: providing a raw electrode layer comprising an electrically non-conducting web; adapting a thickness of the raw electrode layer; and applying a non-solvent to the raw electrode layer.

Claims (16)

1. A method for producing an element for a gas diffusion electrode, the method comprising:

providing a raw electrode layer comprising an electrically non-conducting web;

adapting a thickness of the raw electrode layer;

feeding the raw electrode layer vertically; and

applying a non-solvent to the raw electrode layer during the vertical feeding.

2. The method according to claim 1 , wherein the electrically non-conducting web comprises an organic polymer.

3. The method according to claim 1 , wherein a thickness of the electrically non-conducting web is less than 149 micrometers.

4. The method according to claim 1 , wherein the raw electrode layer comprises particles of an electrode material suspended in a binder.

5. The method according to claim 1 , wherein applying a non-solvent to the raw electrode layer comprises applying a first non-solvent in a closed volume steam and/or spraying the first non-solvent on a surface of the raw-electrode layer.

6. The method according to claim 1 , wherein applying a non-solvent to the raw electrode layer comprises applying a second non-solvent in a non-solvent bath.

7. The method according to claim 1 , wherein providing a raw electrode layer comprises:

providing a first raw electrode layer and a second raw electrode layer; and

pressing together the first raw electrode layer and the second raw electrode layer.

8. The method according to claim 7 , wherein the first raw electrode layer and the second raw electrode layer each comprise an electrically non-conducting web.

9. The method according to claim 1 , further comprising placing a physical barrier in front of a surface of the raw electrode layer before applying the non-solvent to the raw electrode layer.

10. The method according to claim 9 , further comprising controlling a distance between the physical barrier and the surface of the raw electrode layer.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 10, 2021
From: SIEMENS AKTIENGESELLSCHAFT
To: SIEMENS ENERGY GLOBAL GMBH & CO. KG
Reel/Frame 057279/0865 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 23, 2020
From: HANSEN, MARTIN KALMAR; THERKILDSEN, KASPER TIPSMARK
To: SIEMENS A/S
Reel/Frame 052478/0547 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 23, 2020
From: SIEMENS A/S
To: SIEMENS AKTIENGESELLSCHAFT
Reel/Frame 052478/0677 →