Chem. Sci., 2026, Accepted Manuscript DOI: 10.1039/D6SC04034A, Edge Article Ting Zhang, Yifan Xu, Zijian He, Junliang Zhao, Lei Gao, Songbai Han, Chenghua Sun, Qiang Xu, Ruo Zhao Polyethylene oxide (PEO) based electrolytes are essential for solid-state batteries due to their intrinsic flexibility and affordability for large-scale manufacturing. However, they suffer from severe Li dendrite growth. Traditional strategies...