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2021-11-17
Although the production equipment of all-solid-state lithium secondary batteries is quite different from the traditional production equipment of lithium-ion battery cells, there is no revolutionary innovation objectively, but there are higher requirements in the production environment.
The preparation of large-capacity all-solid-state lithium secondary batteries based on polymer solid electrolytes is close to the winding process of existing lithium-ion batteries.
However, considering the poor flexibility of the current inorganic solid electrolyte membranes, the lamination process is more often used in the preparation of all solid-state lithium secondary batteries. As for the specific preparation of the electrolyte and the positive and negative electrode membranes, they are still used The preparation of the composite layer of electrolyte and positive electrode by double-layer or multi-layer coating at one time, the technical route that is more suitable for large-scale production needs further research.
Although the production equipment for all-solid-state lithium secondary batteries is quite different from the traditional production equipment for lithium-ion battery cells, objectively there is no revolutionary innovation. It is possible that 80% of the equipment can continue the production equipment for lithium-ion batteries. , But there are higher requirements in the production environment, and it needs to be produced in a higher-level drying room. This is for air-sensitive storage with supercapacitors, lithium ion capacitors, nickel cobalt aluminum, pre-lithiation, lithium titanate, etc. For companies capable of devices or materials, the manufacturing environment is compatible, but the corresponding production environment costs have increased significantly.