{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T17:57:29Z","timestamp":1790791049444,"version":"4.1.0"},"reference-count":45,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,9,27]],"date-time":"2026-09-27T00:00:00Z","timestamp":1790467200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,9,27]],"date-time":"2026-09-27T00:00:00Z","timestamp":1790467200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["advanced.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Advanced Science"],"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Conventional polyolefin separators exhibit limited mechanical resilience and poor damage tolerance, leading to performance degradation and critical safety concerns. To overcome these limitations, we developed supramolecular self\u2010healing separators based on polyethylene\u2013hydroxyethyl methacrylate (PE\u2010HEMA) copolymers functionalized with ureidopyrimidinone (UPy) units. The UPy motifs undergo reversible dimerization through quadruple hydrogen bonding within the polymer matrix, forming a dynamic supramolecular network capable of autonomously repairing mechanical defects. Three copolymers with varying UPy grafting densities were synthesized and blended with high\u2010molecular\u2010weight polyethylene oxide (PEO) to significantly enhance electrolyte affinity and ionic transport. Composite membranes (35\u201340 \u00b5m) were subsequently produced via a rapid, solvent\u2010free hot\u2010pressing process. Due to increased amorphous character and enhanced polymer chain mobility, the resulting materials exhibit efficient self\u2010healing at mild temperatures (40\u00b0C), improved electrolyte wettability, and high ionic conductivity. Electrochemical testing in Li|Li symmetric cells demonstrate that the separators successfully recover functionality after dendrite\u2010induced short circuits through network reorganization. When implemented in LiFePO\n                    <jats:sub>4<\/jats:sub>\n                    \u2010based full cells, the optimized separator enables stable cycling, delivering a discharge capacity of \u2248130 mAh g\n                    <jats:sup>\u2212<\/jats:sup>\n                    <jats:sup>1<\/jats:sup>\n                    after 1000 cycles with up to 81.5% capacity retention, alongside improved thermal safety. These results highlight the promise of UPy\u2010based supramolecular separators for next\u2010generation lithium\u2010based batteries.\n                  <\/jats:p>","DOI":"10.1002\/advs.77850","type":"journal-article","created":{"date-parts":[[2026,9,27]],"date-time":"2026-09-27T18:00:31Z","timestamp":1790532031000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Self\u2010Healing UPy\u2010Functionalized Polyethylene Networks: A Robust Platform for Resilient and High\u2010Performance Lithium Battery Separators"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6632-0793","authenticated-orcid":false,"given":"Daniele","family":"Callegari","sequence":"first","affiliation":[{"name":"Department of Chemistry and INSTM\u2010GISEL University of Pavia  Pavia 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Sustainability and INSTM University Of Parma Parco Area delle Scienze  Parma Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1192-7747","authenticated-orcid":false,"given":"Eliana","family":"Quartarone","sequence":"additional","affiliation":[{"name":"Department of Chemistry and INSTM\u2010GISEL University of Pavia  Pavia 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