{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,25]],"date-time":"2026-08-25T03:47:36Z","timestamp":1787629656995,"version":"build-2736575974"},"reference-count":43,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2025,1,30]],"date-time":"2025-01-30T00:00:00Z","timestamp":1738195200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100012166","name":"National Key Research and Development 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"}]}],"content-domain":{"domain":["advanced.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Advanced Science"],"published-print":{"date-parts":[[2025,3]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Achieving high\u2010performance dielectric materials remains a significant challenge due to the inherent trade\u2010offs between high energy storage density and low energy loss. A central difficulty lies in identifying a suitable dipolar unit that can enhance the polarity and dielectric constant of the material while effectively suppressing the high energy losses associated with polarization relaxation, charge injection, and conduction. To address this, a novel strategy is proposed that introduces electron\u2010donating and electron\u2010withdrawing substituents on the benzene ring of polystyrene\u2010based polymers, creating bulky dipole groups that are resistant to reorientation under an electric field. This approach mitigates relaxation losses associated with dipole reorientation and manipulates the band structure via substituent modification to suppress conduction losses. Additionally, the deformation of the\n                    <jats:italic>\u03c0<\/jats:italic>\n                    \u2010electron cloud under an electric field enhances the dielectric constant and energy storage density. Ultimately, the optimized chlorostyrene\u2010methyl methacrylate (MMA) copolymer exhibits an 85% discharge efficiency and an energy storage density of 18.3 J cm\n                    <jats:sup>\u2212<\/jats:sup>\n                    <jats:sup>3<\/jats:sup>\n                    , nearly three times that of styrene\u2010based copolymers under the same conditions. This study introduces a new approach for designing high\u2010energy density, low\u2010loss polymer dielectric materials by precisely controlling electron\u2010donating and electron\u2010withdrawing effects to modulate the distribution of\n                    <jats:italic>\u03c0<\/jats:italic>\n                    \u2010conjugated electron clouds.\n                  <\/jats:p>","DOI":"10.1002\/advs.202415738","type":"journal-article","created":{"date-parts":[[2025,1,30]],"date-time":"2025-01-30T14:29:52Z","timestamp":1738247392000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Overcoming Energy Storage\u2010Loss Trade\u2010Offs in Polymer Dielectrics Through the Synergistic Tuning of Electronic Effects in\n                    <i>\u03c0<\/i>\n                    \u2010Conjugated Polystyrenes"],"prefix":"10.1002","volume":"12","author":[{"given":"Yipin","family":"Cheng","sequence":"first","affiliation":[{"name":"Department of Applied Chemistry Xi'an Key Laboratory of Sustainable Energy Materials Chemistry National Innovation Platform (Center) for Industry\u2010Education Integration of Energy Storage Technology Engineering Research Center of Energy Storage Materials and Devices of Ministry of Education School of Chemistry Xi'an Jiaotong University  Xi'an 710049 P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Honghong","family":"Gong","sequence":"additional","affiliation":[{"name":"Department of Applied Chemistry Xi'an Key Laboratory of Sustainable Energy Materials Chemistry National Innovation Platform (Center) for Industry\u2010Education Integration of Energy Storage Technology Engineering Research Center of Energy Storage Materials and Devices of Ministry of Education School of Chemistry Xi'an Jiaotong University  Xi'an 710049 P. R. 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China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qinglong","family":"Ji","sequence":"additional","affiliation":[{"name":"Department of Applied Chemistry Xi'an Key Laboratory of Sustainable Energy Materials Chemistry National Innovation Platform (Center) for Industry\u2010Education Integration of Energy Storage Technology Engineering Research Center of Energy Storage Materials and Devices of Ministry of Education School of Chemistry Xi'an Jiaotong University  Xi'an 710049 P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guanxiang","family":"Zhang","sequence":"additional","affiliation":[{"name":"National Key Laboratory of Science and Technology on Vessel Integrated Power System Naval University of Engineering  Wuhan 430034 P. R. 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