Titanium Bipolar Plates

Functions of titanium bipolar plates

Current Collection and Conduction:

As the current path in fuel cells, titanium bipolar plates effectively collect and conduct the current generated by the reaction between hydrogen and oxygen.

Gas Flow Channels:

Bipolar plates ensure that hydrogen and oxygen flow separately to the cathode and anode of the cell. Therefore, titanium bipolar plates must have precise geometries and dimensions to achieve efficient gas flow.

Prevention of Gas Mixing:

To ensure the safe operation of fuel cells, titanium bipolar plates also prevent the mixing of hydrogen and oxygen, providing reliable sealing performance.

Advantages

Corrosion Resistance:

The chemical reaction rates of hydrogen and oxygen on titanium surfaces are slow, so titanium exhibits excellent corrosion resistance and oxidation resistance in hydrogen environments, effectively preventing hydrogen embrittlement.

Hydrogen Permeability:

Titanium has high hydrogen permeability, allowing hydrogen adsorption and desorption at lower temperatures and pressures, thereby improving the efficiency and performance of hydrogen fuel cells.

Mechanical Strength and Ductility:

Titanium is a metallic material with excellent mechanical strength and ductility, capable of withstanding high pressures and high-temperature working environments while maintaining stable performance.

Coefficient of Thermal Expansion:

Titanium has a low coefficient of thermal expansion, better accommodating deformations caused by temperature changes, thereby reducing the risk of damage or performance degradation due to thermal stress.

Application 

Titanium bipolar plates, with their outstanding performance, have been widely applied in hydrogen fuel cells, proton exchange membrane fuel cells (PEMFC), and other fields. With the continuous development of fuel cell technology, the application prospects for titanium bipolar plates will become broader.

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