In a groundbreaking study published in Energy Storage Materials, the Korea Electrotechnology Research Institute (KERI) has made a significant advancement towards the commercialization of all-solid-state batteries. Led by Dr. Park Jun-woo and Sung Junghwan, the research team has developed a revolutionary technology that focuses on the “size-controlled wet-chemical synthesis of solid-state electrolytes.” This innovation not only reduces processing time and cost by over fifty percent but also doubles the quality of the resulting solid-state electrolytes.
Solid-state batteries utilize solid-state electrolytes instead of liquid ones for the transfer of ions between the cathode and anode, reducing the risk of fire or explosion. However, for integration into all-solid-state batteries, these solid-state electrolytes must be incredibly small, measuring just a few micrometers in thickness. KERI has pioneered a technology that can mass-produce these minute solid-state electrolytes with enhanced ionic conductivity through a simplified process, eliminating the need for additional mechanical grinding processes that are typically required with larger particle sizes.
KERI’s innovative approach involves using microscopic raw materials, such as lithium sulfide, and controlling the nucleation rate of each material during chemical reactions to produce downsized solid-state electrolytes. This method allows for the production of fine solid-state electrolytes using a straightforward wet synthesis technique, without the need for complex processes. The successful control of the chemical composition has led to a substantial increase in ionic conductivity, from 2 mS/cm to 4.98 mS/cm, surpassing the capabilities of existing production methods.
Following this groundbreaking achievement, KERI has submitted multiple patent applications and anticipates significant interest from the all-solid-state battery industry. The institute plans to engage in technology transfer agreements with companies that express a demand for this innovative technology. Furthermore, KERI aims to combine this achievement with a previous development—a special wet synthesis technique aimed at mass-producing solid-state electrolytes at a fraction of the raw materials cost, using a patented additive. This strategic move positions KERI as a leader in the low-cost mass production of high-quality solid-state electrolytes, paving the way for the future of all-solid-state batteries.
KERI’s breakthrough in the development of all-solid-state batteries marks a significant milestone in the field of battery technology. By overcoming existing limitations, reducing costs, and improving the quality of solid-state electrolytes, KERI is paving the way for the commercialization of safe and efficient energy storage solutions. The impact of this innovative technology is poised to revolutionize the way we power our devices and vehicles, setting a new standard for the future of battery technology.