Title:
GAS DIFFUSION LAYER AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/036067
Kind Code:
A1
Abstract:
Disclosed are a gas diffusion layer and a preparation method therefor, which comprises the following steps: S1: providing elongated recesses in parallel on a side surface of a metal sheet; S2: cutting the metal sheet provided with the elongated recesses into a desired shape; S3: stacking a plurality of cut metal sheets such that adjacent metal sheets are tightly attached and firmly connected to form a metal block having regular pore structures; and S4: cutting the metal block along a cross section of the metal block, where the cutting thickness matches the thickness of the desired gas diffusion layer, and a cut sheet structure with micropores being regularly distributed on the surface is used as the gas diffusion layer. The present invention can solve the problems that titanium fiber felts in the prior art have poor diversion performance, low contact efficiency and large contact surface resistance.
Inventors:
MAO XUEWEI (CN)
LIN WEIBING (CN)
TENG BIAO (CN)
LIN WEIBING (CN)
TENG BIAO (CN)
Application Number:
PCT/CN2022/116942
Publication Date:
March 16, 2023
Filing Date:
September 05, 2022
Export Citation:
Assignee:
QINGKE NEW ENERGY TECH SHANGHAI CO LTD (CN)
International Classes:
C25B11/032; C25B1/04; C25B9/23
Foreign References:
| CN113789537A | 2021-12-14 | |||
| CN114934290A | 2022-08-23 | |||
| CN216765076U | 2022-06-17 | |||
| CN101946349A | 2011-01-12 | |||
| JP2016195052A | 2016-11-17 | |||
| JP2009117221A | 2009-05-28 | |||
| JP2010257868A | 2010-11-11 | |||
| CN111408725A | 2020-07-14 | |||
| CN111139497A | 2020-05-12 |
Attorney, Agent or Firm:
SHANGHAI TECHNOVO INTELLECTUAL PROPERTY AGENT FIRM (CN)
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