Visualization of O-O peroxo-like dimers in high-capacity layered oxides for Li-ion batteries

TLDR

Lithium layered oxides promise doubled storage capacities, but safe, long‑lasting batteries require understanding the physical and chemical changes during redox processes, motivating deeper insight into cathode layered oxides. The study aims to investigate cathode layered oxides to enable higher energy density in rechargeable batteries. The authors combined experimental measurements and computational modeling to probe O‑O dimer formation in cathode materials. They found that O‑O dimer formation enhances cathode properties, offering a route to higher capacity. McCalla et al.

Abstract

Peering into cathode layered oxides The quest for better rechargeable batteries means finding ways to pack more energy into a smaller mass or volume. Lithium layered oxides are a promising class of materials that could double storage capacities. However, the design of safe and long-lasting batteries requires an understanding of the physical and chemical changes that occur during redox processes. McCalla et al. used a combination of experiments and calculations to understand the formation of O-O dimers, which are key to improving the properties of these cathode materials. Science , this issue p. 1516