At present, many countries around all aspects of the new hydrogen research is in full swing, technical difficulties in stepping up to overcome. With the continuous expansion of the scale of hydrogen energy production and storage and transportation infrastructure, the cost of hydrogen energy also has a large space to decline. Research shows that the overall cost of hydrogen energy industry chain is expected to drop by half by 2030. According to the report jointly released by the international Hydrogen Energy Commission and McKinsey, more than 30 countries and regions have released the roadmap for hydrogen energy development, and the global investment in hydrogen energy projects will reach 300 billion US dollars by 2030
Hydrogen fuel cell stack is composed of multiple fuel cell cells stacked in series.The bipolar plate and membrane electrode MEA are overlapped alternately, and seals are embedded between each monomer. After being pressed by the front and rear plates, they are fastened and fastened with screws to form a hydrogen fuel cell stack.
The bipolar plate and membrane electrode MEA are overlapped alternately, and seals are embedded between each monomer. After being pressed by the front and rear plates, they are fastened and fastened with screws to form a hydrogen fuel cell stack.At present, the actual application is the bipolar plate made of artificial graphite. The bipolar plate made of this kind of material has good conductivity and corrosion resistance. However, due to the requirements for air tightness of the bipolar plate, the manufacturing process needs many production processes such as resin impregnation, carbonization, graphitization and subsequent flow field processing, so the manufacturing procedure is complex and the cost is very high, It has become an important factor restricting the application of fuel cell.
Proton exchange membrane fuel cell (PEMFC) can directly convert chemical energy into electrical energy in an isothermal and electrochemical manner. It is not limited by Carnot cycle, has high energy conversion rate (40% ~ 60%), and is clean and pollution-free (the product is mainly water). It is considered to be the first efficient and clean power supply system in the 21st century. As the connecting component of single cells in PEMFC stack, bipolar plate mainly plays the role of isolating gas collusion between cells, distributing fuel and oxidant, supporting membrane electrode and connecting single cells in series to form electronic circuit.
Post time: Jan-10-2022