Hydrogen fueled titanium bipolar plates

Hydrogen-fueled titanium bipolar plates are a key component in hydrogen fuel cells with a variety of advantages and features. The following is a detailed introduction to hydrogen fuel titanium bipolar plates:

Advantage:

Corrosion resistance: titanium has excellent corrosion resistance and oxidation resistance in hydrogen environment, which can effectively prevent the occurrence of hydrogen embrittlement phenomenon, which makes it perform well in the working environment of hydrogen fuel cell.

Hydrogen permeability: Titanium has high hydrogen permeability, which can realize hydrogen adsorption and desorption at lower temperature and pressure, thus improving the efficiency and performance of hydrogen fuel cell.

Mechanical strength and ductility: Titanium has excellent mechanical strength and ductility, and can withstand high pressure and high temperature working environment while maintaining stable performance.

Coefficient of Thermal Expansion: Titanium has a low coefficient of thermal expansion, which enables it to better adapt to the deformation caused by temperature changes during fuel cell operation and reduces the risk of damage or performance degradation due to thermal stress.

Biocompatibility: Titanium is a biocompatible material that is widely used in the medical field, so choosing titanium as the material for hydrogen fuel cell stacks ensures good biocompatibility inside the human body or in the environment and reduces potential health risks.

Challenges and solutions:

Weakly conductive TiO2 film: the weakly conductive TiO2 film generated on the surface of titanium bipolar plates affects their electrical conductivity. To solve this problem, doping alloying elements to generate conductive oxides or applying a conductive and corrosion-resistant coating to the titanium surface can be used to avoid the generation of TiO2 films.

Coating problem: In the coating preparation process of titanium bipolar plates, there are problems such as coating pinhole defects. The use of advanced technology, such as plasma immersion technology, can eliminate the pinhole and large particle defects on the surface of the coating, and improve the corrosion resistance and electrical conductivity of the coating.

Development trend:

Lightweight: bipolar plate is the largest and heaviest component in hydrogen fuel cell, reducing its weight and volume is the key to improve the specific energy of hydrogen fuel cell. Therefore, future research on titanium bipolar plates for hydrogen fuel cells will pay more attention to lightweight design.

Cost reduction: the cost of bipolar plates accounts for a large proportion of a single cell, reducing its material and its processing cost is one of the main ways to reduce the cost of hydrogen fuel cells. By optimizing the production process and material selection, it is expected to reduce the manufacturing cost of titanium bipolar plates for hydrogen fuel.

Performance Improvement: With the continuous improvement of the performance requirements for hydrogen fuel cells, hydrogen fuel titanium bipolar plates also need to continuously improve their conductivity, corrosion resistance and other key indicators. By improving the coating technology and optimizing the doping of alloying elements, it is expected that the performance of titanium bipolar plates for hydrogen fuel will be improved.

In conclusion, as a key component of hydrogen fuel cells, hydrogen fuel titanium bipolar plates have a wide range of applications and great potential for development. With the continuous progress of technology and cost reduction, it is believed that hydrogen-fueled titanium bipolar plates will play an even more important role in the field of hydrogen fuel cells in the future.