On September 23, 2021, SHWS Hydrogen Energy Technology Corporation's first batch of high-performance membrane electrodes was successfully rolled off the assembly line. This indicates that the “roll-to-roll” membrane electrode production line developed by SHWS has the capacity for large-scale mass production and also marks the company The ability to control the key core technologies of hydrogen energy and fuel cell vehicles has taken another important step, officially moving from basic research and development to a new stage of industrial development.
Membrane electrode for hydrogen fuel cell stack
Based on the in-depth technical requirements of the fuel cell vehicle, the innovative "gradient technology" of the SHWS membrane electrode R&D team is the key technology and important support for the realization of the "high performance" characteristics of the membrane electrode.
Gradient technology-Multi-stage dispersion pulping technology, gradient transfer technology, and thin-film packaging technology are used to achieve the directional gradient distribution of ionomers, forming a unique commercial membrane electrode technology sequence of Weishi Energy:
Multi-stage dispersion pulping technology: to achieve homogeneous ionomer coating catalyst, make the slurry stable for more than 150 hours, and successfully prepare crack-free, uniform thickness cathode and anode coatings;
Gradient transfer technology: Based on the unique slurry system, advanced slurry quick-drying technology and unique gradient transfer technology have been developed to achieve the gradient distribution of ionomer, catalyst and pore network in the catalytic layer, which greatly improves Performance and life of membrane electrode;
Thin-sheet packaging technology: to achieve the successful application of ultra-thin GDL, reduce the overall thickness of the membrane electrode by 30%, greatly increase the volume power density of the stack, and ensure that the membrane electrode has excellent hydrothermal management and dynamic response capabilities, which is suitable for automotive use The membrane electrode's long battery life drive injects strong power.
Relying on innovative "gradient technology", SHWS has successively overcome key technical bottlenecks such as high power density, reliable packaging and cycle life, in order to further promote the localization rate of membrane electrode core technology, and enhance the advanced nature of independent technology and international market competitiveness. Laid a solid foundation.
The membrane electrode structure design and preparation process are complex, and the research and development cycle is long, and the technical barriers are high. China's commercial membrane electrodes mainly rely on imports, resulting in high fuel cell costs, whether based on the promotion and application of the fuel cell industry or the supply chain. Safety, the domestic demand for membrane electrodes is very urgent. At the same time, compared with product development problems, manufacturing capacity is also a "gulf" in the face of localization.
Based on the practical exploration of new technology application and intelligent manufacturing, SHWS has customized the world's advanced high-precision production equipment such as Japan and Germany, independently designed fully automatic "roll-to-roll" membrane electrode production line, integrated online detection technology, and realized preparation from slurry , Slit coating, CCM transfer, frame film encapsulation, GDL bonding to the product line, the whole process is controlled with high precision, the overall size and distribution accuracy of the membrane electrode components are controlled within 100 microns, and the voltage deviation is ≤10mV , To ensure the consistency and reliability of the product, and has a complete anti-plagiarism design.
After the production line is fully operational, it can produce more than one million membrane electrodes per year, which provides strong support for accelerating the localization of membrane electrodes and promoting the large-scale application of fuel cell technology.
In addition, the company also has a complete membrane electrode R&D and testing laboratory, from the development end to the application end, to achieve the full process coverage of product definition, design R&D, manufacturing, testing and after-sales service. At the same time, the development of next-generation membrane electrode products and the design of flexible production lines are also in progress.
At present, the company's membrane electrode products have fully begun to accept orders from domestic and foreign customers, and will be delivered in batches to overseas markets such as Europe and Canada at the end of 2021, to show the world the technology and strength of Chinese independent brands in the field of hydrogen energy, and to practice green development The attitude and determination of the concept actively contribute Chinese wisdom and power to the global "carbon neutrality".
About SHWS
SHWS is committed to the development, production and sales of core components of hydrogen fuel cell products. After three years of incubation, it has now received more than 1 billion yuan of investment and is positioned as a high-tech enterprise focusing on the market-oriented operation of hydrogen fuel cell technology.
The company has four R&D centers in Shanghai, Japan, Germany, and Canada. It has established a culturally diverse and technologically advanced R&D team, and strictly follows the V model development process to create vehicle-level fuel cell power systems and components. The main products include fuel cell engines, electric stacks, 35MPa/70MPa vehicle-mounted high-pressure hydrogen systems, bottle valves and pressure reducing valves, etc.
SHWS revolves around the core technology of hydrogen fuel cell that it has mastered to create products with international competitiveness: high-performance membrane electrodes, high-power density stacks, high-efficiency fuel cell engines, high-voltage vehicle-mounted hydrogen storage bottles, highly integrated bottle valves, etc., and are committed to To provide customers with cost-effective hydrogen fuel cell technology solutions.