A joint research team led by Professor Lim Hee-dae of Hanyang University's Department of Chemical Engineering and Dr. Park Joon-woo of the Korea Electrotechnology Research Institute announced the development of a novel coating strategy to address the long-stood problem of instability at the cathode–electrolyte interface in all-solid-state batteries. This breakthrough technology enables the formation of a uniform, stable coating layer without complex processes or high-temperature heat treatment, representing a potential turning point toward the commercialization of next-generation all-solid-state batteries.

In recent years, 토토사이트 마무리 멘트 batteries have attracted attention as a next-generation battery technology due to their low explosion risk and high energy density. However, in sulfide-based solid electrolytes, direct contact with active materials in the cathode triggers unwanted side chemical reactions, leading to performance degradation and shortened battery life. Conventional coating approaches often require high-temperature treatments or complex solution processes, or result in thick layers that hinder ion transport.

To overcome these limitations, the team proposed a new coating method using Phase-Convertible Ion conductors(PCI) — materials that can switch between solid and liquid states under specific conditions. By harnessing the frictional heat generated during simple mixing, the researchers induced an instantaneous ‘liquefaction–re-solidification’ process. This process evenly wetted particle surfaces, forming ultra-thin, uniform coating layers without the need for complex or high-temperature processing.

As a result, cathodes coated with this method effectively suppressed interfacial side reactions with sulfide-based electrolytes, greatly improving initial capacity retention and cycle life, while maintaining stable output performance even under high current densities. Furthermore, the technique proved widely applicable to various cathode and anode materials, thus evaluated as a foundational technology for future improvements in 토토사이트 마무리 멘트 battery performance.

Professor Lim Hee-dae, who led the research, remarked, “This study presents a simple yet effective solution to the complex issue of cathode–electrolyte interface instability. A scalable production process would offer another step forward toward commercializing all-solid-state batteries.”

Supported by the 2025 Global Industry Technology Cooperation Center(GITCC) Program from Korea Institute for Advancement of Technology, this work was published online on September 22 in the international energy journal Advanced Energy Materials. The paper Self-liquefying Conformal Nanocoatings via Phase-Convertible Ion Conductors for Stable 토토사이트 마무리 멘트 Batteries lists Hanyang University researchers Park Sun-jin and Kim Dong-hee as co–first authors, and Professor Lim Hee-dae and Dr. Park Joon-woo as corresponding authors.