Key applications of pure titanium wire in fuel cells

Pure titanium wire, with its outstanding corrosion resistance, electrical conductivity, lightweight and high-temperature stability, has become an indispensable material for fuel cells. It plays a significant role in key parts such as the bipolar plate flow field, gas diffusion layer, sealing structure and conductive components, significantly enhancing the performance and durability of fuel cells and promoting the development of fuel cell technology.

I. Core Application Fields
(1) Bipolar plate flow field diversion net
Pure titanium wires are woven into a porous flow guide net and embedded in the flow field channels of bipolar plates, which can optimize the flow distribution of hydrogen and oxygen and avoid insufficient local gas supply. In acidic working environments, the high corrosion resistance of titanium wire (especially under pH 2-5 conditions) is significantly superior to that of stainless steel or graphite materials. In addition, the lightweight design of the titanium wire flow guide mesh can effectively reduce the weight of the bipolar plate, which is particularly suitable for the lightweight requirements of on-board fuel cell stacks.

(2) Gas diffusion layer reinforcing materials
Combining ultrafine titanium wire (with a diameter of 0.1-0.3mm) with carbon fiber can enhance the structural strength of the gas diffusion layer and prevent collapse during battery stacking and compression. The high electrical conductivity of titanium wire can enhance the efficiency of electron conduction, reduce contact resistance, and thereby improve the overall performance of the gas diffusion layer.

(3) Sealing and anti-vibration structure
Titanium wire is woven into elastic sealing gaskets, which can be used on stack end plates or the edges of membrane electrodes. They have the characteristics of high-temperature resistance (150-200 ℃) and no rebound after long-term compression. In on-board fuel cells, titanium wire skeletons can fix the stack components, resist the vibration and shock during vehicle operation, and ensure the stability and reliability of the fuel cell under complex working conditions.

(4) Electrodes and current collection components
Pure titanium wire can be sintered or 3D printed to form a porous electrode substrate, enhancing the loading efficiency of catalysts such as platinum. In addition, titanium wire can also be used as the current collection wire for battery cells, replacing part of the copper material to prevent copper ions from contaminating the proton exchange membrane, thereby enhancing the overall performance and lifespan of the battery.

(V) Special application scenarios
In direct methanol fuel cells, titanium wires are resistant to methanol corrosion and can be used as anode support materials. In solid oxide fuel cells, high-purity titanium wire (Gr1) is used for connecting components and can form a stable TiO₂ protective layer in an 800 ° C high-temperature oxidation environment, ensuring stability and durability in high-temperature conditions.

(2) Hinges and connecting parts
Pure titanium wire is used to make eyeglass hinges, which have high wear resistance. Even after opening and closing tens of thousands of times, it can still remain smooth, avoiding the problem of loosening of ordinary metal hinges. Some high-end brands even adopt titanium wire elastic structures to achieve screw-free hinge designs, which not only enhance the aesthetic appeal of the products but also further increase their durability.

(3) Nose pads and detailed components
Titanium wire nose pads are highly suitable for people with sensitive skin. They can effectively prevent nickel allergy problems and comply with the EU nickel release standard EN 1811. In addition, the flexibility of the titanium wire allows for fine-tuning of the Angle of the nose pads, thereby enhancing the fit, which is particularly suitable for the Asian face shape with low nose Bridges.

(4) Fashion and Functional Design
Pure titanium wire can be drawn to a diameter of less than 0.5mm, allowing for the production of ultra-fine lens rings and creating an invisible wearing effect, which is highly favored by frameless glasses enthusiasts. It is also easy to process into complex textures, such as hand-woven temple shafts or laser-engraved patterns, greatly enhancing the artistic value of the glasses. In addition, through electrolytic coloring, titanium wire can present a rich variety of colors such as gold, blue and purple, meeting consumers' personalized demands.

(V) Special-purpose glasses
In the field of sports glasses, the lightweight and high impact resistance of titanium wire make it an ideal choice for professional sports frames such as skiing and cycling. For children's glasses, the flexibility of titanium wire can reduce the risk of accidental injury during wearing. In the field of smart glasses, the electromagnetic shielding property (which does not affect signals) and lightweight characteristics of titanium wire make it highly suitable for use as structural components in AR/VR glasses.

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