South Korean Research Team Unlocks Lithium-Air Battery Potential Using Atomic-Level Defect Control in Two-Dimensional Catalysts

A new 2D catalyst from South Korean researchers allows lithium-air batteries to achieve 550+ cycles, offering 10x the energy density of lithium-ion.

By: AXL Media

Published: Apr 1, 2026, 4:06 AM EDT

Source: Information for this report was sourced from National Research Council of Science & Technology

The Quest for Theoretical Energy Density in Next-Generation Mobility

The global push for extended electric vehicle ranges has placed immense pressure on existing battery chemistries to surpass their current physical limitations. Lithium-air batteries have long been viewed as the ultimate successor to lithium-ion technology due to a theoretical energy density that is an order of magnitude higher. However, the commercial transition has been stalled by sluggish oxygen reaction rates and rapid degradation during charge-discharge cycles. A new collaborative effort between the Korea Institute of Science and Technology (KIST) and the Institute for Advanced Engineering (IAE) has addressed these foundational hurdles by introducing a two-dimensional catalyst that fundamentally changes how oxygen molecules interact with the battery’s internal surfaces.

Activating the Dormant Basal Plane of Nanomaterials

Traditional two-dimensional materials often suffer from limited catalytic activity because their reactive sites are confined strictly to their edges, leaving the vast majority of the material’s surface area functionally dormant. The research team, led by Dr. Jeong Sohee and Dr. Lee Kwang-hee, successfully bypassed this structural inefficiency by transforming the entire basal plane of tungsten diselenide into an active catalytic site. This was achieved through a precise atomic-level engineering strategy that substitutes platinum atoms into the layered structure while intentionally creating selenium vacancies. This method ensures that the entire surface of the nanomaterial participates in the chemical reaction, maximizing utility without compromising the high electrical conductivity essential for rapid power delivery.

Superior Durability Under High-Speed Charging Conditions

Performance testing of the new catalyst revealed significant improvements in both longevity and stability when compared to expensive commercial benchmarks like ruthenium oxide. The lithium-air batteries incorporating this technology maintained stable operations for over 550 cycles even under accelerated 1 C-rate conditions. This level of durability across a broad spectrum of charge-discharge rates suggests that the material is uniquely suited for high-power applications where rapid energy transfer is required. By ensuring that the structural integrity of the catalyst remains intact during these in...