INS7-0243
Layer-by-Layer Self-Assembly of Graphene Oxide Nanocomposite Thin Films for Li-Metal Anode Interfaces
Topic
S7. Innovations in Polymeric Composites: From Design and Processing to Industrial Applications
When and Where
Sep 29, 2026
15:50 - 16:15
Room 107
Session Chairs
Jin MIYAWAKI
Presenter(s)
Bongjun Yeom (Hanyang University)
Co-Author(s)
Abstract
Lithium metal batteries (LMBs) are promising next-generation energy storage systems because of the high theoretical capacity and low redox potential of lithium metal. However, their practical use remains limited by uncontrolled Li deposition, unstable solid electrolyte interphase (SEI) formation, and continuous interfacial side reactions during repeated Li plating and stripping. In this presentation, graphene oxide (GO)-based nanocomposite thin films are introduced as functional anode coatings for LMBs, fabricated by Layer-by-Layer (LbL) self-assembly method for constructing highly structured GO composite interfaces. GO is an attractive building block for anode coating because its two-dimensional geometry with oxygen-containing functional groups that can promote ion transport and formation of stable solid electrolyte interphase (SEI) layer in LMBs. Through controlled LbL assembly, GO nanosheets can be organized into ultrathin films with tunable thickness, composition, surface chemistry, and internal nanostructure. The sequential adsorption process forms well-defined composite architectures through versatile intermolecular interactions, providing a practical route to translate nanoscale organization into thin-film form. When applied to Li-metal anodes, these self-assembled GO nanocomposite coatings can regulate Li-ion flux and suppress localized current concentration, resulting in uniform Li deposition and enhanced interfacial stability during battery operation. This presentation highlights how interface-driven self-assembly of GO-based nanocomposite thin films enables highly ordered functional thin films and how this methodology can be extended to anode interface engineering for safer and more durable LMBs.
