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Recently, the team of Fudan University professors Peng Huisheng and Wang Bingjie combined the preparation of fiber polymer energy storage batteries with classical wet spinning, and took the lead in proposing a large-scale production route of fiber batteries in the world, and realized a series of Rapid sequential construction of kilometer-scale fiber batteries
Previously, people used the coating method of planar batteries to prepare fiber batteries, but the process was complicated and the efficiency was low, making it difficult to meet the needs of large-scale production applications
The difficulty of the wet spinning route is how to maintain the interfacial stability between the functional components of the battery and realize the electrochemical activity in the extremely fine and soft fiber structure
On this basis, the researchers revealed the interaction mechanism between the polymer matrix and other functional components during the integrated molding of fiber batteries, established the correlation between the structure and performance of different functional components, and finally realized a series of Large-scale production of kilometer-scale fiber batteries
"The large-scale, one-step fiber battery prepared by polymer wet spinning is thinner and more flexible, and it is closer to the polymer chemical fiber used in daily textiles
