biostudies-literatureGregory GLOxford Martin School, University of OxfordFaraday InstitutionEngineering and Physical Sciences Research Council17477-17486https://www.ebi.ac.uk/biostudies/studies/S-EPMC9523710biostudies-literatureUnknown144(38)Polymers designed with a specific combination of electrochemical, mechanical, and chemical properties could help overcome challenges limiting practical all-solid-state batteries for high-performance next-generation energy storage devices. In composite cathodes, comprising active cathode material, inorganic solid electrolyte, and carbon, battery longevity is limited by active particle volume changes occurring on charge/discharge. To overcome this, impractical high pressures are applied to maintain interfacial contact. Herein, block polymers designed to address these issues combine ionic conductivity, electrochemical stability, and suitable elastomeric mechanical properties, including adhesion. The block polymers have "hard-soft-hard", ABA, block structures, where the soft "B" block is poly(Journal of the American Chemical SocietyBuffering Volume Change in Solid-State Battery Composite Cathodes with CO₂-Derived Block Polycarbonate Ethers.PMC9523710EP/V003321/1EP/R027129/1FIRG026EP/R010145/1EP/S018603/1Gregory GLWilliams CKLiu BGao HGao XBruce PGRees GJPasta MfalseBuffering Volume Change in Solid-State Battery Composite Cathodes with CO₂-Derived Block Polycarbonate Ethers.Polymers designed with a specific combination of electrochemical, mechanical, and chemical properties could help overcome challenges limiting practical all-solid-state batteries for high-performance next-generation energy storage devices. In composite cathodes, comprising active cathode material, inorganic solid electrolyte, and carbon, battery longevity is limited by active particle volume changes occurring on charge/discharge. To overcome this, impractical high pressures are applied to maintain interfacial contact. Herein, block polymers designed to address these issues combine ionic conductivity, electrochemical stability, and suitable elastomeric mechanical properties, including adhesion. The block polymers have "hard-soft-hard", ABA, block structures, where the soft "B" block is poly(2022-01-01T00:00:00Z2022 Sep2025-04-04T12:04:47.506Z2024-11-19T23:13:37.535ZS-EPMC95237103612237510.1021/jacs.2c06138