The Korea Electrotechnology Research Institute (KERI) has made significant progress in the development of all-solid-state batteries. Dr. Park Jun-woo and Sung Junghwan have successfully engineered a revolutionary technology focused on the “size-controlled wet-chemical synthesis of solid-state electrolytes.” This breakthrough technology not only reduces processing time and costs but also enhances the quality of solid-state electrolytes used in these batteries.

The Importance of Solid-State Electrolytes in Batteries

Solid-state batteries utilize solid-state electrolytes instead of liquid components for ion transfer between the cathode and anode. This design significantly decreases the risk of fire or explosion in batteries. However, for solid-state electrolytes to be integrated into batteries successfully, especially in the cathode, they must be minute in size, measuring only a few micrometers. KERI has developed a technology that can mass-produce these small solid-state electrolytes with high ionic conductivity using a simplified process.

Unlike traditional methods that often result in large particle sizes of solid-state electrolytes, requiring additional processes like mechanical grinding, KERI’s approach streamlines the production process. By using microscopic raw materials and controlling the nucleation rate during chemical reactions, KERI has managed to produce fine solid-state electrolytes without the need for intricate processes. This innovative method has led to a significant increase in ionic conductivity from 2 mS/cm to 4.98 mS/cm, surpassing existing production methods.

The Impact of KERI’s Breakthrough

After years of experimentation and analysis, the KERI research team has discovered the ideal combination of materials for solid-state electrolytes. Dr. Park emphasized the importance of selecting the right materials and controlling chemical reactions to simplify the production process. Despite its simplicity, the resulting solid-state electrolytes exhibit improved quality, making them suitable for mass production and commercialization. KERI has filed several patent applications for this achievement and expects significant interest from the all-solid-state battery industry.

KERI plans to engage in technology transfer agreements with companies interested in adopting their technology for all-solid-state batteries. Additionally, the institute aims to combine this achievement with a special wet synthesis technique that decreases raw material costs by one-tenth using a patented additive. This strategic move positions KERI as a leader in the cost-effective mass production of high-quality solid-state electrolytes, further advancing the commercialization of all-solid-state batteries.


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