As fuel cell stacks and systems continue to climb towards higher power and higher power density, the improvement of core materials and equipment processes is facing new challenges. On the one hand, the core materials represented by proton exchange membrane, catalyst and carbon paper are still at the critical juncture of domestic substitution; On the other hand, the continuous iteration of membrane electrode, stack, system and other 名媛直播 also puts forward higher requirements for relevant production equipment and processes. In the critical period of commercialization of the fuel cell industry, what are the excellent solutions for domestic materials and equipment?
On the second day of the 2022 High tech Hydrogen and Power Annual Conference, guests brainstormed on the above issues in three special sessions: the electric stack and core materials, the electric stack and bipolar plate, and the fuel cell application.
Due to the limited space, this paper only gathers the highlights of 7 speakers and round table dialogues in the special session on stack and core materials. Other special highlights will continue to be shared, please pay attention!
Dr. Ding Han, director of Dongyue Future Hydrogen Energy Application and Development Department, delivered a keynote speech on "sustainable innovation of core key materials, helping the hydrogen energy industry burst new vitality".
Dongyue Future Hydrogen Energy is committed to the independent research of key hydrogen energy core materials, and helps to improve the proton membrane iteration through the perfect resin system. In terms of proton membranes for fuel cells, DMR100 is a representative product μ The number of competing 名媛直播 of m is basically the same in the water transport system. Under high humidity conditions, DMR100 film shows excellent performance and low impedance. On the basis of DMR100, Dongyue Hydrogen Energy has developed a thickness of 15 μ The DM2256B proton membrane with low humidity resistance exhibits excellent performance and impedance under low humidity conditions. Furthermore, Dongyue Future Hydrogen Energy has also developed a thickness of 10 μ DM2276B ultrathin composite proton membrane of m has lower impedance and better hydrogen permeation current density under low humidity conditions.
In terms of proton membrane for hydrogen production from PEM electrolytic water, Dongyue Future Hydrogen Energy has developed DME670 (170 μ m) And DME6321A (120 μ m) Proton membrane 名媛直播, these two 名媛直播 have higher strength, lower proton transmission impedance and excellent long operating life, aiming to meet the application requirements of high power output electrolytic hydrogen production. In terms of liquid flow battery membrane, Dongyue Future Hydrogen Energy has developed DMV850 (50 μ m) And DMV8115A (60 μ m) Proton membrane 名媛直播, which have higher strength, proton transmission impedance and excellent charge discharge life, are designed to meet the application requirements of high power output liquid flow battery.
Up to now, Dongyue Future Hydrogen Energy has formed a complete industrial chain layout of proton membrane. From raw materials, resins to proton membranes, the technology has been independently controlled and mass-produced. The company's mission is to become the world's leading supplier of high-performance perfluorinated proton membranes with core technology.
Zheng Jianbao, general manager of Duke New Materials, delivered a keynote speech on "fuel cell material selection". Zheng Jianbao explained in detail how to do a good job in molding graphite bipolar plate from the aspects of the selection of molding substrate, mold design, press selection, microporous filler selection, and the selection of adhesive sealant for cooling chamber. He also made a deep discussion on the adhesive sealing technology of membrane electrode.
As a supplier specializing in the solution of fuel cell adhesive and composite bipolar plate in the field of hydrogen energy, Duke New Materials has now established a complete matrix of fuel cell adhesive 名媛直播. The company has successively introduced graphite plate microporous sealing adhesive, graphite bipolar plate water field adhesive, bipolar plate gas field injection sealant, MEA frame and carbon paper adhesive, GDL bonding frame adhesive, humidifier potting adhesive Metal plates are coated with adhesive gaskets and other 名媛直播. In terms of composite bipolar plates, Qingdao DUKE, a joint-stock company, has expanded a number of 名媛直播 including flexible graphite prefabricated plates (baseplates), composite bipolar plates, composite bipolar plate components (with seals), etc.
Zuo Boyu, General Manager of Aerospace Huayang New Energy Equipment Business Department, delivered a keynote speech on "Hard Power" of hydrogen energy key material production equipment. He said that Aerospace Huayang has 23 years of experience in winding equipment, 12 years of experience in precision coating equipment, and 5 years of experience in hydrogen energy material equipment, which can be widely used in the production and manufacturing of membrane electrodes (MEA), gas diffusion layers (GDL), proton exchange membranes (PEM), catalyst coatings, etc.
The key to the complete set of equipment for gas diffusion layer is to solve the problems of tensile deformation and tear of base materials and materials, hydrophobic/hydrophobic properties of materials, formation of microporous layer, furnace and high temperature oxidation of materials, etc; The difficulties of the composite proton exchange membrane process are mainly the wet coating composite technology of PET/PI and other substrates, the coating water residual control technology, and the PTFE micro tension precision control technology; At present, hot pressing method and direct coating method are developed for catalyst coating process. Aerospace Huayang has developed corresponding solutions to the above problems, which can provide production equipment from small scale, medium scale and mass production to meet the needs of customers for industrialization.
Wang Shigang, Technical Director of Dongguan Jiatuo Fuel Cell, delivered a keynote speech on "Fine Manufacturing of Membrane Electrode Coating Equipment". Wang Shigang introduced that Dongguan Jiatuo CCM coating adopts the form of straight slit coating. Due to the difference in rheological characteristic curve of catalysts from different enterprises, the mold head needs to be simulated and analyzed for catalyst slurry and special flow channel design in the design process. To this end, Dongguan Jiatuo can provide customers with CCM trial production and equipment customization design at the demand end, simulation and 3D review at the design end, mold walking and trial coating test at the manufacturing and commissioning end and other services.
As a high-end intelligent equipment supplier integrating technology research and development, manufacturing, production and sales services, Dongguan Jiatuo's main 名媛直播 include complete sets of automation equipment dedicated to lithium battery cell manufacturing, and coating equipment applied in emerging industries such as fuel cells. For the application of hydrogen energy, the company has developed CCM testing machine flat coating, CCM Ca/An slit direct coating equipment, CCM slit direct coating equipment for water electrolysis hydrogen production, GDL coating equipment (slit/scraper/dip coating), alkaline diaphragm coating equipment and other 名媛直播.
Shi Xize, the technical support director of Evergrande New Material Hydrogen Energy Project, delivered a keynote speech on "Glue Scheme for Hydrogen Fuel Cell Vehicle Components". Evergrande New Materials, founded in 1995, is a large-scale scientific and technological private enterprise in the field of adhesives and sealants in China. It has more than 20 years of experience in the field of glue. Its 名媛直播 cover 11 categories, including UV curing adhesive series, organic silicon series, epoxy adhesive series, and hundreds of 名媛直播. After years of dedicated research and development, Evergrande New Materials has formed a relatively complete rubber product matrix for fuel cell stacks in terms of rubber for fuel cell vehicle components.
In terms of new 名媛直播, since this year, Evergrande New Material has launched single component point adhesive process 名媛直播 K-5090BK, K-5099-2BK, K-5097 and two-component injection molding process 名媛直播 K-5022R in hydrogen fuel cell gas field sealant. The new product has significantly improved the performance of compression set. In addition, the company also launched 名媛直播 such as explosion-proof valve structural adhesive and humidifier potting adhesive to help the hydrogen energy industry.
Zhao Yufeng, the person in charge of Kesai New Material Hydrogen Energy Project, delivered a keynote speech on "Application of PTFE in the hydrogen energy industry". He said that PTFE has the advantages of excellent high and low temperature resistance, extremely strong insulation resistance, excellent corrosion resistance, unique non viscosity, excellent aging resistance, rare incombustibility, etc. Its 名媛直播 include the base membrane of proton exchange membrane, transfer film, and PTFE gasket used in hydrogen production industry.
The CSFM-800H hydrogen energy transfer film made by Kesai New Materials from PTFE resin raw materials through molding and sintering process and ultra-high precision turning equipment has unique self lubrication, excellent high and low temperature resistance and other characteristics; The catalyst agitator made of PTFE and stainless steel has high corrosion resistance; Compared with pure PTFE 名媛直播, PTFE modified gaskets have obvious improvement in wear resistance, hardness, creep resistance, self lubrication, etc.
Dr. Xu Chunchuan, the chief hydrogen technology expert of Tianneng Hydrogen Power, delivered a keynote speech entitled "Main Factors of the Degradation of PEM Fuel Cells and AST Test Exploration". Xu Chunchuan believes that chemical decomposition and mechanical fatigue damage of proton exchange membrane, catalyst degradation/oxidation and corrosion of carbon support, and oxidation and corrosion of metal bipolar plate are the main problems affecting the life of automotive fuel cells.
At present, in the development of the stack, solutions such as the development of new materials, protective additives and anti-corrosion conductive coatings, optimization of structural design and improvement of dynamic and accurate control of the stack are mainly optimized. Tianneng Hydrogen Electroprobe studies and detects the main failure modes and degradation factors of the stack, and develops a short reactor AST cycle scheme containing physical and chemical comprehensive degradation factors. With the strong technical advantages of Tianneng Group, Tianneng Hydrogen Power has entered into cooperative relations with many domestic mainstream automobile enterprises and jointly developed a number of hydrogen fuel cell engine systems for various applications. It has a full set of hydrogen fuel cell stacks, raw material testing and testing equipment. At present, it has broken through a number of key core materials and core technologies of stacks. The self-developed stack 名媛直播 cover various application scenarios in the transportation field.
At the round table dialogue session of the special session on electric stacks and core materials, Dr. Zhang Xiaofei, Chairman of Gaogong Hydrogen Power, presided over, Zhao Yufeng, Head of Kesai New Materials Hydrogen Energy Project, Shi Xize, Head of Hengda New Materials Hydrogen Energy Project Technical Support, Zuo Boyu, General Manager of Aerospace Huayang New Energy Equipment Business Department Zheng Jianbao, General Manager of Duke New Materials, and other guests focused on "How about the degree of independent innovation in the material sector? What is the trend of innovation in the core material manufacturing process and equipment?" And other topics. Their main views are:
1. Enterprises should pay close attention to the development trend of new technologies and new processes in the industry, and keep up with the technological development trend. Revolutionary new technologies and processes may have lower costs and higher efficiency, which will have a huge impact on the existing market of the enterprise; 2. Material equipment is crucial to material innovation and is the basis of material iteration and upgrading. Good materials and equipment are the embodiment of the strength of core materials enterprises and have stronger attraction to end customers; 3. Core material enterprises and material equipment enterprises should fully communicate. Material and equipment enterprises should do a good job in market research and judgment, develop in advance while meeting the needs of material enterprises, and launch 名媛直播 that meet the future needs of customers.
