ArticleAdvanced science (Weinheim, Baden-Wurttemberg, Germany)2026
Lewis Acid-Activated Charge Trapping in Dielectric Polymers for Superior High-Temperature Electrostatic Energy Storage.
Article in Advanced science (Weinheim, Baden-Wurttemberg, Germany), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Breaking high-temperature dielectric energy storage limits through suppression of charge carrier transport.Nature communications · 2026Article
- Lewis Acid-Activated Charge Trapping in Dielectric Polymers for Superior High-Temperature Electrostatic Energy Storage.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
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Authors and funding
22 authors.
Funding
Abstract
Dielectric polymer capacitors are essential for electrostatic energy storage but suffer from charge transport-induced energy losses, particularly at elevated temperatures where thermally activated charge carriers exacerbate conduction. Conventional mitigation strategies rely on introducing heterogeneous interfaces to create charge traps, complicating scalable film fabrication. A homogeneous molecular trapping mechanism would circumvent these complexities, yet remains underexplored. Herein, a charge trapping strategy is devised by modifying the lowest occupied molecular orbitals of dielectric polymers through Lewis acid-base adduct formation. The use of tris(pentafluorophenyl)boron (BCF) as a Lewis acidic molecular additive introduces deeper charge traps in commercial polyetherimide (PEI) while retaining homogeneity. With only 0.5 wt.% loading, the PEI-BCF film exhibits greatly improved breakdown strength, achieving an ultrahigh discharged energy density of 7.3 J cm
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