Advancing the implementation of fire-resistant next-generation batteries with dual-layer coating for practical use

In a groundbreaking collaboration, Professor Hongkyung Lee of DGIST’s Energy Science and Engineering department, along with Dr. Chanhoon Kim’s Clean Energy Conversion Group at KITECH, has developed a revolutionary stabilization technology for unstable battery systems. The innovative approach involves a dual-layer coating method, as detailed in their recent publication in the Chemical Engineering Journal.

Lithium metal has long been revered for its potential as an ideal anode material for batteries due to its high theoretical capacity. However, the inherent risks of lithium-ion batteries, such as fire and explosion hazards during overcharging or over-discharge, have hindered their widespread use in electric vehicles and portable electronic devices. This has prompted researchers to explore safer alternatives like aqueous zinc batteries, known for their high energy density and eco-friendly properties.

The team’s dual-layer coating technique, which combines metal fluoride and polymer solutions, has shown remarkable results in addressing common issues with zinc batteries. By strategically placing the metal fluoride layer underneath and the non-reactive polymer layer on top of the zinc metal, the technology effectively inhibits zinc dendrite formation, suppresses hydrogen evolution reactions, and prevents zinc corrosion.

Professor Lee expressed optimism about the potential impact of this research, stating, “This technology has the potential to revolutionize various systems utilizing metal anodes, not just limited to zinc batteries.” The study, published in the Chemical Engineering Journal, marks a significant milestone in the quest for safer and more efficient battery technologies.