biostudies-literatureUnknown12(43)Cui PBlock copolymer electrolytes represented by polyurethane (PU) have become the forefront field of organic solid-state electrolytes for high-performance lithium-metal batteries due to their superb mechanical properties. However, due to the existence of mechanical hard segments, discontinuous ion transition at the electrolyte-electrode contact is inevitable, which leads to a series of problems such as terrible polarization phenomena, poor cycle stability and inadequate capacity retention. Here, we propose a new strategy to improve the chemical stability and interaction of electrolyte-electrode by modulating soft segments, which successfully reduces the polarization phenomenon. Then a new composite polymer solid electrolyte based on block copolymer PU (abbr. SPE) was prepared by ion-conduct seRSC advances27881-27888https://www.ebi.ac.uk/biostudies/studies/S-EPMC9520676biostudies-literaturePolyurethane-P₂S₅ composite-based solid-state electrolyte assists low polarization and high stability all-solid-state lithium-ion batteries.PMC9520676Cui PSun CWei WDai HfalsePolyurethane-P₂S₅ composite-based solid-state electrolyte assists low polarization and high stability all-solid-state lithium-ion batteries.Block copolymer electrolytes represented by polyurethane (PU) have become the forefront field of organic solid-state electrolytes for high-performance lithium-metal batteries due to their superb mechanical properties. However, due to the existence of mechanical hard segments, discontinuous ion transition at the electrolyte-electrode contact is inevitable, which leads to a series of problems such as terrible polarization phenomena, poor cycle stability and inadequate capacity retention. Here, we propose a new strategy to improve the chemical stability and interaction of electrolyte-electrode by modulating soft segments, which successfully reduces the polarization phenomenon. Then a new composite polymer solid electrolyte based on block copolymer PU (abbr. SPE) was prepared by ion-conduct se2022-01-01T00:00:00Z2022 Sep2025-04-05T13:27:21.422Z2025-02-19T01:31:00.34ZS-EPMC95206763632023110.1039/d2ra05330f