Stabilizing Layered Cathodes by High-Entropy Doping

Layered Ni-rich oxide cathodes in lithium-ion batteries (LIBs) often struggle with poor thermal safety and capacity fade. Xin and colleagues’ studies in Nature and Nature Energy demonstrate a novel high-entropy (compositionally complex) doping strategy, introducing “cocktail effects” from multiple constituents. This approach substantially improves cycling performance and stability, reduces material cost, and may pave the way toward the development of advanced electrodes for next-generation LIBs.