Bo Peng, Hang Luo*, Haoran Xie, Di Zhai, Ru Guo, Yuan Liu, Minxi Li, Haiyan Chen, Jinchao Cao and Dou Zhang*,
{"title":"在聚合物电介质中构建异质结构 TiO2@Al2O3 纳米线阵列以提高储能性能","authors":"Bo Peng, Hang Luo*, Haoran Xie, Di Zhai, Ru Guo, Yuan Liu, Minxi Li, Haiyan Chen, Jinchao Cao and Dou Zhang*, ","doi":"10.1021/acsapm.4c01006","DOIUrl":null,"url":null,"abstract":"<p >Currently, polymer-based nanocomposites with high dielectric constant (<i>ε</i><sub>r</sub>) and breakdown strength (<i>E</i><sub>b</sub>) are urgently needed, which are always in a contradictory relationship. In this work, TiO<sub>2</sub> nanowire arrays coated by Al<sub>2</sub>O<sub>3</sub> which are synthesized by hydrothermal and ALD are introduced into the PVDF. The results show that the introduction of TiO<sub>2</sub> nanowire arrays with high orientation polarization significantly improves the <i>ε</i><sub>r</sub> of PVDF. In addition, the Al<sub>2</sub>O<sub>3</sub> can alleviate the dielectric mismatch at the interface between TiO<sub>2</sub> and PVDF and adjust the distribution of internal electric field, leading to simultaneously improving the <i>E</i><sub>b</sub> of nanocomposites. Finally, the TiO<sub>2</sub>@Al<sub>2</sub>O<sub>3</sub>-24/PVDF nanocomposite achieves a high <i>ε</i><sub><i>r</i></sub> of 21 (1 kHz) and energy storage density (<i>U</i><sub>e</sub>) of 15.3 J/cm<sup>3</sup>, which is more than twice that of pure PVDF (≈ 6.69 J/cm<sup>3</sup>). This work provides an effective strategy to relieve the contradictory relationship of simultaneous high <i>ε</i><sub>r</sub> and high <i>E</i><sub>b</sub> of dielectrics.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":null,"pages":null},"PeriodicalIF":4.4000,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Constructing Heterogeneous-Structure TiO2@Al2O3 Nanowire Arrays in Polymer Dielectrics for Improving the Energy Storage Performance\",\"authors\":\"Bo Peng, Hang Luo*, Haoran Xie, Di Zhai, Ru Guo, Yuan Liu, Minxi Li, Haiyan Chen, Jinchao Cao and Dou Zhang*, \",\"doi\":\"10.1021/acsapm.4c01006\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Currently, polymer-based nanocomposites with high dielectric constant (<i>ε</i><sub>r</sub>) and breakdown strength (<i>E</i><sub>b</sub>) are urgently needed, which are always in a contradictory relationship. In this work, TiO<sub>2</sub> nanowire arrays coated by Al<sub>2</sub>O<sub>3</sub> which are synthesized by hydrothermal and ALD are introduced into the PVDF. The results show that the introduction of TiO<sub>2</sub> nanowire arrays with high orientation polarization significantly improves the <i>ε</i><sub>r</sub> of PVDF. In addition, the Al<sub>2</sub>O<sub>3</sub> can alleviate the dielectric mismatch at the interface between TiO<sub>2</sub> and PVDF and adjust the distribution of internal electric field, leading to simultaneously improving the <i>E</i><sub>b</sub> of nanocomposites. Finally, the TiO<sub>2</sub>@Al<sub>2</sub>O<sub>3</sub>-24/PVDF nanocomposite achieves a high <i>ε</i><sub><i>r</i></sub> of 21 (1 kHz) and energy storage density (<i>U</i><sub>e</sub>) of 15.3 J/cm<sup>3</sup>, which is more than twice that of pure PVDF (≈ 6.69 J/cm<sup>3</sup>). This work provides an effective strategy to relieve the contradictory relationship of simultaneous high <i>ε</i><sub>r</sub> and high <i>E</i><sub>b</sub> of dielectrics.</p>\",\"PeriodicalId\":7,\"journal\":{\"name\":\"ACS Applied Polymer Materials\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.4000,\"publicationDate\":\"2024-06-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS Applied Polymer Materials\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acsapm.4c01006\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Polymer Materials","FirstCategoryId":"92","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsapm.4c01006","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Constructing Heterogeneous-Structure TiO2@Al2O3 Nanowire Arrays in Polymer Dielectrics for Improving the Energy Storage Performance
Currently, polymer-based nanocomposites with high dielectric constant (εr) and breakdown strength (Eb) are urgently needed, which are always in a contradictory relationship. In this work, TiO2 nanowire arrays coated by Al2O3 which are synthesized by hydrothermal and ALD are introduced into the PVDF. The results show that the introduction of TiO2 nanowire arrays with high orientation polarization significantly improves the εr of PVDF. In addition, the Al2O3 can alleviate the dielectric mismatch at the interface between TiO2 and PVDF and adjust the distribution of internal electric field, leading to simultaneously improving the Eb of nanocomposites. Finally, the TiO2@Al2O3-24/PVDF nanocomposite achieves a high εr of 21 (1 kHz) and energy storage density (Ue) of 15.3 J/cm3, which is more than twice that of pure PVDF (≈ 6.69 J/cm3). This work provides an effective strategy to relieve the contradictory relationship of simultaneous high εr and high Eb of dielectrics.
期刊介绍：
ACS Applied Polymer Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics, and biology relevant to applications of polymers.
The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates fundamental knowledge in the areas of materials, engineering, physics, bioscience, polymer science and chemistry into important polymer applications. The journal is specifically interested in work that addresses relationships among structure, processing, morphology, chemistry, properties, and function as well as work that provide insights into mechanisms critical to the performance of the polymer for applications.
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