Samsung SDI starts dry electrode verification work, expected to reduce the cost of all solid-state batteries – Passionategeekz

Passionategeekz June 18th, Korean media THE ELECT reported yesterday that Samsung SDI is starting battery verification work based on dry electrodes on the test production line “DryEV” built by the Tianan factory. The company has previously completed laboratory performance testing.

Dry electrodes are a technology developed by Samsung SDI to break through the cost structure of traditional wet process and improve manufacturing competitiveness. It has now achieved the possibility of high-density thin filming, shortening of process, streamlining of equipment and thick filming.Mass production maturity is constantly improving。

The key to upgrading the dry process is Fibrosis technology of PTFE (Polytetrafluoroethylene) adhesive and uniform dispersion of conductive materialsthe company is promoting precision control of powder supply and equipment optimization to improve productivity.

Samsung SDI electrode sheet business unit said yesterday: “The core of the dry electrode is the adhesivethis is the only difference between dry and wet methods in terms of materials. When a certain pressure and shear force is applied, the PTFE adhesive will stretch and extend like fibers. This fiber structure forms a layered structure supporting the conductive material and the active material. During the process, the conductive material is evenly dispersed and the fibers are entangled, making the filming stronger. ”

Based on fibrosis technology, the company is improving the uniformity of powder up and down and improving high-strength filming technology. The processNo drying process is required because no solvent is used, which can greatly reduce equipment energy consumption。

Passionategeekz found that Samsung SDI is considering dry electrode technologyApplied to all solid state batteriesplan to use it asReduce manufacturing costs, improve equipment efficiency and mass production speedmeans of competition.

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