Application areas

Application areas

From the molecular level to industry, every step represents a leap in value.

Membrane material

PBI (polybenzimidazole), with its exceptional resistance to high temperatures and strong corrosive environments, along with its gas‑separation and ion‑conductivity properties, has emerged as a core substrate for advanced functional membranes. PBI membranes are well suited to demanding applications, finding widespread use across diverse membrane‑based industries, addressing the limitations of conventional membrane materials, and underpinning the advancement of membrane technologies.

In the proton exchange membrane field, phosphoric-acid‑doped PBI membranes enable stable mass transport under high‑temperature, anhydrous conditions (120–200°C), making them well suited for high‑temperature fuel cells and water electrolysis for hydrogen production. This simplifies equipment design, extends service life, and supports green hydrogen production. In the flow battery sector, PBI membranes can be used to fabricate both cation‑ and anion‑conducting membranes, compatible with mainstream flow batteries, offering strong vanadium‑blocking performance and long lifetimes, and have already been commercialized.

In the field of gas separation membranes, PBI membranes can efficiently purify hydrogen and separate carbon dioxide, withstand high‑temperature acidic conditions, and are well suited for industrial gas purification and carbon‑reduction applications. In the realm of high‑temperature filtration membranes, they tolerate temperatures below 1,000°C, making them ideal for industries such as metallurgy and waste incineration, with high filtration efficiency and excellent resistance to mechanical damage. Moreover, PBI can serve as a modifying layer in composite membranes, enhancing their overall performance.

 

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