Type IV hydrogen storage cylinders typically refer to pressure vessels composed of carbon fiber composite-wrapped polymer liners, where the polymer liner provides sealing, and the carbon fiber wrap layer bears the internal pressure.
Commonly used polymers for the liner include high-density polyethylene (HDPE) or Nylon (PA – Polyamide). It not only provides sealing but also acts as a barrier against hydrogen permeation. Carbon fiber composite materials have the characteristics of high specific modulus and high specific strength, allowing the cylinder to have a lighter structural mass when subjected to extremely high pressures.
High-pressure cylinders have a wide range of applications, not only for hydrogen storage in fuel cell vehicles but also for the storage and transportation of industrial gases and as part of hydrogen energy infrastructure. As the importance of hydrogen energy in the global energy system continues to grow, efficient and safe hydrogen storage solutions become increasingly critical.
This exhibit uses domestically produced polymer materials and is constructed based on the independently designed and manufactured Type IV cylinder with a composite-wrapped liner. Through different layering designs, the cylinder can withstand pressures ranging from 35 MPa to 70 MPa.