Titanium Expanded Mesh for PEM Electrolyzers

Product Introduction

Titanium expanded mesh is manufactured from titanium plates or coils. It undergoes cutting and stretching processes using automated mesh expanders, resulting in a metal mesh with uniform diamond-shaped openings. The primary application of titanium expanded mesh is as a base material for mixed metal oxide electrodes, enabling increased surface area for enhanced catalyst utilization. Moreover, it facilitates improved ion separation by allowing adjustable upward flow rates through the base material. The uniform distribution of edges across the anode surface contributes to excellent current density and plating performance, promoting efficient solution movement, electrolyte transfer, and plating processes.

Parameters

Material: pure titanium

Grade: Gr1

Size: 350*450*1mm

SWD×LWD: 3*6mm

What are the benefits of using titanium expanded mesh in PEM electrolyzers?

1. Increased Surface Area: Titanium expanded mesh provides a significantly larger surface area compared to solid titanium plates or coils. The mesh structure consists of uniformly distributed diamond-shaped openings, allowing for a greater catalyst loading. This increased surface area facilitates enhanced electrochemical reactions, leading to improved efficiency in hydrogen and oxygen generation.

2. Improved Mass Transfer: The diamond-shaped openings in the expanded mesh design allow for better mass transfer of reactants and products. They enable efficient movement of electrolyte ions and gases, ensuring optimal contact between electrodes and electrolyte. This improved mass transfer contributes to higher reaction rates and overall electrolyzer performance.

3. Enhanced Current Distribution: The uniform distribution of edges and interconnectedness of the expanded mesh structure promote uniform current distribution across the anode surface. This characteristic minimizes localized high current density regions, preventing uneven electrode wear and ensuring consistent performance. It also helps to maintain a stable operating environment within the electrolyzer.

4. Adjustable Flow Rate: The open structure of the titanium expanded mesh allows for adjustable flow rates of electrolyte and gases. This feature is beneficial for controlling the flow dynamics within the electrolyzer, optimizing ion separation, and facilitating efficient gas bubble removal. It helps to prevent gas accumulation and ensures uniform distribution of reactants, promoting consistent and reliable electrolysis.

5. Mechanical Strength and Stability: Titanium expanded mesh provides excellent mechanical strength and stability as a support structure for the anode. It can withstand the rigors of electrolyzer operation, including temperature fluctuations and mechanical stress. The mesh structure maintains its shape and integrity, ensuring long-term durability and reliability of the electrolyzer system.

6. Customizable Design: Titanium expanded mesh can be manufactured in various dimensions, including thickness, SWD (Short Way Diamond), and LWD (Long Way Diamond). This flexibility allows for customization to meet specific application requirements, ensuring compatibility with different PEM electrolyzer designs and configurations.

Principle of Operation

PEM electrolyzers function by electrochemically splitting water into hydrogen and oxygen. These devices consist of two fundamental components: an anode and a cathode, with a proton exchange membrane (PEM) separating them.

At the anode, water molecules are disassociated into oxygen (O2) and positively charged hydrogen ions (H+) via an applied electric current. The proton exchange membrane selectively permits the passage of protons while separating them from electrons. In the cathode chamber, these protons migrate through the membrane and combine with oxygen and electrons, resulting in the formation of hydrogen (H2).

Titanium expanded mesh acts as a support structure for the anode, ensuring stability and electrical conductivity.

Is it necessary to platinum coat titanium expended mesh?

Untreated titanium forms an oxide coating (TiO2) in the presence of oxygen. Although it does not consume like a carbon Gas Diffusion Layer (GDL), the oxide layer functions as an insulator, raising cell resistance and lowering performance. Titanium oxidation takes longer to become a concern than carbon GDL oxidation, but it is still a significant impact.

Gold or platinum coatings can be added to the titanium surface to protect it from oxidation. Platinization creates a highly stable coating that not only avoids oxidation but also improves the electrolysis process, resulting in slightly higher efficiency and much more stable performance.

Package and Shipment

1. Sintered Filters are usually packed in cartons, wrapped in soft film, and fixed in a box filled with industrial foam cotton, and the outer baler is packed with plastic bags with no damage during transportation.

2. Wooden box export packaging can also be customized. The foam cotton can be filled and fixed, the external box is sealed, the bottom is specified, the whole packaging is processed, and the goods can be delivered to the customer's designated place without damage.

Contact Us

TEL: +8619992203758

FAX: 0917-3873009

Email:karrykang@bjygti.com

Company: TOPTITECH -- BAOJI YINGGAOCO., LTD

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ADD: No. 195, Gaoxin Avenue, High-tech Development Zone, Baoji City, Shaanxi, China