Sintered Products Customized for New Energy Applications

In the hydrogen production process using electrolytes, the gas diffusion layer (GDL) plays a crucial role, with its core function being to promote uniform gas distribution and enhance reaction efficiency. To meet the diverse design and thickness requirements of various electrolytic equipment, the innovative combination and optimization of gas diffusion layer materials have become particularly important.

Currently, nickel felt/titanium felt and titanium sintered plates are the most commonly used gas diffusion layer materials, especially excelling in PEM electrolysis for hydrogen production. However, further improvements and innovations in material design are still needed to meet the specific thickness and performance requirements of different products. Below are the customized combination sintered products we have developed for our clients.

One side of the sintered product is nickel mesh, and the other side is nickel sintered fiber felt, with a round hole

Nickel mesh + Nickel sintered fiber felt combination

A side view of a sintered product composed of titanium powder sintered plate and titanium expanded mesh

Titanium powder sintered plate + Titanium expanded mesh combination

Side view of a sintered product composed of titanium sintered fiber felt and titanium expanded mesh

Titanium sintered fiber felt + Titanium expanded mesh combination

Side view of a sintered product composed of titanium powder sintered plate and titanium mesh

Titanium powder sintered plate + Titanium mesh combination

Innovative Method: Combination of metal wire mesh and sintered felt

To enhance the performance of the gas diffusion layer, combining metal wire mesh or metal steel plate mesh with sintered felt is an effective method. This method not only improves material performance but also meets the diverse requirements of electrolytic equipment. The following are the characteristics of this combination method:

Structural Reinforcement. Metal wire mesh serves as a reinforcement material, providing additional mechanical support to the sintered felt and preventing deformation under high temperature or high pressure conditions. This reinforced structure enhances the overall stability of the gas diffusion layer, ensuring reliability under harsh conditions.
Conductivity Enhancement. The conductivity of the metal wire mesh can improve the electrical conductivity of the gas diffusion layer, thereby enhancing the current conduction efficiency during the hydrogen production process in the electrolyte. This helps to improve the overall electrolysis efficiency and hydrogen production rate, meeting higher production demands.
Sintering Process Optimization. During the sintering process, it is essential to precisely control the temperature and time to ensure a good bond between the metal wire mesh and the sintered felt, avoiding excessive melting of the mesh and material damage, thereby ensuring the integrity and performance of the structure.
Thickness Control. By adjusting the number of layers of the metal wire mesh and the thickness of the sintered felt, the total thickness of the gas diffusion layer can be precisely controlled. This precise control can meet the needs of different electrolytic equipment, optimize the hydrogen production process, and ensure effectiveness in various application scenarios.
Comprehensive performance testing. The combined gas diffusion layer materials need to undergo thorough performance testing, including assessments of gas permeability, mechanical strength, and corrosion resistance. Ensure that the material can effectively enhance reaction efficiency and equipment stability in actual electrolyte hydrogen production.

By combining metal wire mesh with sintered felt, it not only effectively increases the thickness of the gas diffusion layer, improving its mechanical properties and conductivity, but also provides an efficient innovative solution for electrolyte hydrogen production technology. The optimized design of this multilayer gas diffusion layer material undoubtedly provides strong support for performance enhancement and long-term stability of equipment in the hydrogen production process.