JP

Development of Carbon Fibers for pressure vessel supporting the realization of hydrogen society

TEIJIN LIMITED

Outline

The use of hydrogen energy that does not emit CO2 is effective for the realization of a carbon-free society, but in order to use it, high-pressure containers that improve transport and storage efficiency are essential.

Therefore, we will develop high-performance, low-cost Carbon Fibers for use in hydrogen pressure vessels for fuel cell vehicles and hydrogen stations. By applying the Carbon Fibers technology under development, we will accelerate the realization of a hydrogen society by popularizing composites material pressure vessels that have improved durability and reduced weight.

In the NEDO program (hydrogen utilization technology research and development project / research and development on low-cost equipment and systems for fuel cell vehicles and hydrogen stations / development of resin liner low-cost composites container pressure accumulator) in the 2013-29 fiscal year NEDO program, we have been studying application to large type IV pressure vessels. The knowledge gained through this program will be applied to our own Carbon Fibers manufacturing technology, and further cost reductions will be made by innovation of manufacturing technology and construction of mass production system, which will contribute to the acceleration of diffusion.

Description

Development goal: The basic development period (NEDO program) up to 2017, and the practical application consideration period including operation from FY2018 to FY2022, aiming for application to in-vehicle use (FCV) by 2023.In 2025, in conjunction with the Ministry of Economy, Trade and Industry roadmap, which will reduce the vehicle price to the same level as the current hybrid vehicles, we plan to respond appropriately to the price and production of Carbon Fibers around 2025 (each company's 2025 model powered by).

Technical issue: To improve the strength and elastic modulus of Carbon Fibers and reduce costs, we will make fundamental improvements, including reviewing raw materials. The realization (operation) of this is a major issue. Further, it is important to improve the productivity of the filament wind process in the production of pressure vessels, and to ensure the high quality of carbon fibers and the interface design with a view to realizing the total performance of pressure vessels, including resins to be combined.

Company-specific action: Both of improving the Carbon Fibers precursor and improving the carbonization process are under consideration. In addition, we will proceed with mass production scale-up at all bases in Japan, EU and the United States.

On the other hand, we will improve the performance as a composites material by incorporating interface technology and resin technology accumulated in the company.

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