biostudies-literatureLuo ZJilin Provincial Scientific and Technological Development ProgramNational Natural Science Foundation of ChinaOverseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health3533-3543https://www.ebi.ac.uk/biostudies/studies/S-EPMC12728567biostudies-literatureUnknown17(7)Solid polymer electrolytes (SPEs) are regarded as promising candidates for next-generation solid-state lithium metal batteries (SSLMBs) due to their high flexibility and excellent processability, whereas their practical application remains a challenge to simultaneously achieve high ionic conductivity, superior inherent stability, and desirable interfacial compatibility with the Li metal anode. Here, we report a composite solid electrolyte (CSE) incorporating a three-dimensional zeolite network (3D Zeo) into a poly(ethylene oxide) (PEO) matrix containing lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) salt (3D Zeo/PEO). The interconnected 3D Zeo provides continuous Li⁺-conduction pathways and promotes the amorphization of the polymer and the dissociation of the Li salt <i>viaChemical scienceA solid composite electrolyte based on three-dimensional structured zeolite networks for high-performance solid-state lithium metal batteries.PMC127285672228810122479061B1702020250102081JCLuo ZZhang ZCui YYu JLi MfalseA solid composite electrolyte based on three-dimensional structured zeolite networks for high-performance solid-state lithium metal batteries.Solid polymer electrolytes (SPEs) are regarded as promising candidates for next-generation solid-state lithium metal batteries (SSLMBs) due to their high flexibility and excellent processability, whereas their practical application remains a challenge to simultaneously achieve high ionic conductivity, superior inherent stability, and desirable interfacial compatibility with the Li metal anode. Here, we report a composite solid electrolyte (CSE) incorporating a three-dimensional zeolite network (3D Zeo) into a poly(ethylene oxide) (PEO) matrix containing lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) salt (3D Zeo/PEO). The interconnected 3D Zeo provides continuous Li⁺-conduction pathways and promotes the amorphization of the polymer and the dissociation of the Li salt <i>via2026-01-01T00:00:00Z2026 Feb2026-07-16T06:46:04.58Z2026-07-09T10:41:38.852ZS-EPMC127285674145130010.1039/d5sc05786h