{"title":"通过改性聚合物基体和胺化氮化硼纳米片提高纳米复合电介质的储能密度和效率","authors":"","doi":"10.1016/j.materresbull.2024.113056","DOIUrl":null,"url":null,"abstract":"<div><p>Polymers and fillers with high dielectric constant (<em>ε</em><sub>r</sub>), charge-discharge efficiency (<em>η</em>) and breakdown strength (<em>E</em><sub>b</sub>) are fundamental to the development of nanocomposite dielectrics for superior energy storage capabilities. Herein, high-<em>ε</em><sub>r</sub> P(VDF-TrFE) is used to prepare the P(VDF-TrFE)-<em>g</em>-PMMA matrix with elevated <em>ε</em><sub>r</sub> and <em>η</em>, then the P(VDF-TrFE)-<em>g</em>-PMMA/BNNS-NH<sub>2</sub> nanocomposites with uniformly oriented distribution of <em>h</em>-BN is obtained by a squeegee casting process using amino-boron nitride (BNNS-NH<sub>2</sub>) as fillers. Thanks to the limiting effect of PMMA and the high insulating effect of BNNS-NH<sub>2</sub>, the energy storage density (<em>U</em><sub>e</sub>) of the nanocomposite is up to 15.1 J/cm<sup>3</sup> at 500 MV/m, which is 358 % and 182 % of the original P(VDF-TrFE). Furthermore, the <em>η</em> could reach to 72 %, being 184 % of neat polymer. These results demonstrate that the coordinated enhancement of <em>U</em><sub>e</sub> and <em>η</em> is critical for high performance energy storage, which provide scientific and technological support for the practicability of PVDF-based dielectrics.</p></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":null,"pages":null},"PeriodicalIF":5.3000,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhanced energy storage density and efficiency of nanocomposite dielectrics by modifying polymer matrix and aminated boron nitride nanosheet\",\"authors\":\"\",\"doi\":\"10.1016/j.materresbull.2024.113056\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Polymers and fillers with high dielectric constant (<em>ε</em><sub>r</sub>), charge-discharge efficiency (<em>η</em>) and breakdown strength (<em>E</em><sub>b</sub>) are fundamental to the development of nanocomposite dielectrics for superior energy storage capabilities. Herein, high-<em>ε</em><sub>r</sub> P(VDF-TrFE) is used to prepare the P(VDF-TrFE)-<em>g</em>-PMMA matrix with elevated <em>ε</em><sub>r</sub> and <em>η</em>, then the P(VDF-TrFE)-<em>g</em>-PMMA/BNNS-NH<sub>2</sub> nanocomposites with uniformly oriented distribution of <em>h</em>-BN is obtained by a squeegee casting process using amino-boron nitride (BNNS-NH<sub>2</sub>) as fillers. Thanks to the limiting effect of PMMA and the high insulating effect of BNNS-NH<sub>2</sub>, the energy storage density (<em>U</em><sub>e</sub>) of the nanocomposite is up to 15.1 J/cm<sup>3</sup> at 500 MV/m, which is 358 % and 182 % of the original P(VDF-TrFE). Furthermore, the <em>η</em> could reach to 72 %, being 184 % of neat polymer. These results demonstrate that the coordinated enhancement of <em>U</em><sub>e</sub> and <em>η</em> is critical for high performance energy storage, which provide scientific and technological support for the practicability of PVDF-based dielectrics.</p></div>\",\"PeriodicalId\":18265,\"journal\":{\"name\":\"Materials Research Bulletin\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.3000,\"publicationDate\":\"2024-08-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materials Research Bulletin\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0025540824003878\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Research Bulletin","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0025540824003878","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Enhanced energy storage density and efficiency of nanocomposite dielectrics by modifying polymer matrix and aminated boron nitride nanosheet
Polymers and fillers with high dielectric constant (εr), charge-discharge efficiency (η) and breakdown strength (Eb) are fundamental to the development of nanocomposite dielectrics for superior energy storage capabilities. Herein, high-εr P(VDF-TrFE) is used to prepare the P(VDF-TrFE)-g-PMMA matrix with elevated εr and η, then the P(VDF-TrFE)-g-PMMA/BNNS-NH2 nanocomposites with uniformly oriented distribution of h-BN is obtained by a squeegee casting process using amino-boron nitride (BNNS-NH2) as fillers. Thanks to the limiting effect of PMMA and the high insulating effect of BNNS-NH2, the energy storage density (Ue) of the nanocomposite is up to 15.1 J/cm3 at 500 MV/m, which is 358 % and 182 % of the original P(VDF-TrFE). Furthermore, the η could reach to 72 %, being 184 % of neat polymer. These results demonstrate that the coordinated enhancement of Ue and η is critical for high performance energy storage, which provide scientific and technological support for the practicability of PVDF-based dielectrics.
期刊介绍:
Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.