郑州大学卢有彩/刘清朝最新AM丨双单原子氧溢流突破线性限制!
TL;DR - An Advanced Materials study introduces a Co–Gd dual-single-atom catalyst that directs oxygen-species spillover between adjacent sites, bypassing linear adsorption-scaling constraints in Li–O₂ batteries. This spatially decoupled catalysis reduces polarization and improves efficiency and cycling stability.
- Gd sites activate O₂ and capture LiO₂, while neighboring Co sites drive subsequent lithiation, decomposition, and desorption.
- Theory, spectroscopy, EIS/DRT, in situ UV–vis, and DEMS support directed LiO₂ migration from Gd to Co.
- CoGd-DAC achieved a 0.463 V polarization gap, 87% energy efficiency, and more than 310 stable cycles.
- The approach shifts catalyst design from single-site adsorption control toward migration-controlled, spatially cascaded reactions.