{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,28]],"date-time":"2026-10-28T17:34:27Z","timestamp":1793208867817,"version":"4.5.0"},"reference-count":34,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2025,12,26]],"date-time":"2025-12-26T00:00:00Z","timestamp":1766707200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2025,12,26]],"date-time":"2025-12-26T00:00:00Z","timestamp":1766707200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100012166","name":"National Basic Research Program of China","doi-asserted-by":"publisher","award":["2023YFB3208400"],"award-info":[{"award-number":["2023YFB3208400"]}],"id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["52473062"],"award-info":[{"award-number":["52473062"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["52373021"],"award-info":[{"award-number":["52373021"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["52003214"],"award-info":[{"award-number":["52003214"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Small Methods"],"published-print":{"date-parts":[[2026,2]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    In modern electronics and power systems, high\u2010performance dielectric capacitors with metallized films are indispensable for efficient energy storage and power delivery. However, commercially available polymers like BOPP and PVDF are limited by inherent structural defects, restricting their ability to achieve high energy density and low energy loss. Glassy polymers, which offer a promising balance between these attributes, are severely restricted by their brittleness, complicating film casting and coil winding processes crucial for capacitor applications. To address these challenges, we introduced non\u2010polar hydroxyl\u2010terminated polybutadiene monomers into glassy polymers to construct distinct sea\u2010island structures. This approach enhances the dielectric constant through interface polarization and significantly improves material toughness. These structures concentrate stress, enable plastic deformation, inhibit crack propagation, and demonstrate self\u2010healing capabilities. Additionally, the reverse electric field generated by interface polarization traps charges, preventing further electron migration and delaying the decline in breakdown strength. Our results show a releasing efficiency of 89.5%, a discharge energy of 10.48 J\/cm\n                    <jats:sup>3<\/jats:sup>\n                    at 550 MV m\n                    <jats:sup>\u22121<\/jats:sup>\n                    , and a fracture elongation of 27.3%. This study pioneers a novel strategy to decouple the trade\u2010offs between high energy density, low energy loss, and enhanced toughness through the strategic construction of sea\u2010island structures, opening new avenues for advanced dielectric materials.\n                  <\/jats:p>","DOI":"10.1002\/smtd.202501755","type":"journal-article","created":{"date-parts":[[2025,12,26]],"date-time":"2025-12-26T10:27:17Z","timestamp":1766744837000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Engineering High\u2010Performance Polymer Dielectrics via Sea\u2010Island Phase Separation: Synergizing Toughness, Energy Density, and Low Dielectric Loss"],"prefix":"10.1002","volume":"10","author":[{"given":"Honghong","family":"Gong","sequence":"first","affiliation":[{"name":"National Innovation Platform (Center) for Industry\u2010Education Integration of Energy Storage Technology, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Engineering Research Center of Energy Storage Materials and Devices of Ministry of Education, School of Chemistry Xi'an Jiaotong University  Xi'an Shaanxi P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qinglong","family":"Ji","sequence":"additional","affiliation":[{"name":"National Innovation Platform (Center) for Industry\u2010Education Integration of Energy Storage Technology, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Engineering Research Center of Energy Storage Materials and Devices of Ministry of Education, School of Chemistry Xi'an Jiaotong University  Xi'an Shaanxi P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yipin","family":"Cheng","sequence":"additional","affiliation":[{"name":"National Innovation Platform (Center) for Industry\u2010Education Integration of Energy Storage Technology, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Engineering Research Center of Energy Storage Materials and Devices of Ministry of Education, School of Chemistry Xi'an Jiaotong University  Xi'an Shaanxi P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiangmiao","family":"Zhao","sequence":"additional","affiliation":[{"name":"National Innovation Platform (Center) for Industry\u2010Education Integration of Energy Storage Technology, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Engineering Research Center of Energy Storage Materials and Devices of Ministry of Education, School of Chemistry Xi'an Jiaotong University  Xi'an Shaanxi P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Meirong","family":"Zhang","sequence":"additional","affiliation":[{"name":"National Innovation Platform (Center) for Industry\u2010Education Integration of Energy Storage Technology, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Engineering Research Center of Energy Storage Materials and Devices of Ministry of Education, School of Chemistry Xi'an Jiaotong University  Xi'an Shaanxi P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiao","family":"Zhang","sequence":"additional","affiliation":[{"name":"National Key Laboratory of Science and Technology on Vessel Integrated Power System Naval University of Engineering  Wuhan Hubei P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jian","family":"Wang","sequence":"additional","affiliation":[{"name":"Ningxia Key Laboratory of Photovoltaic Materials, School of Materials and New Energy Ningxia University  Ningxia Yinchuan P. R. 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