Enhanced energy storage properties of thermostable sandwich-structured BaTiO3/polyimide nanocomposites with better controlled interfaces
The energy density of polymers for high temperature applications is still relatively low. Among them, polyimide (PI) is one of the most attractive matrixes because of its high thermal stability. Instead of the mono thermal imidization method to fabricate multilayer PI nanocomposites in the literatur...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-01-01
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| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127520308054 |
| _version_ | 1819107920643620864 |
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| author | Jiasheng Ru Daomin Min Michael Lanagan Shengtao Li George Chen |
| author_facet | Jiasheng Ru Daomin Min Michael Lanagan Shengtao Li George Chen |
| author_sort | Jiasheng Ru |
| collection | DOAJ |
| description | The energy density of polymers for high temperature applications is still relatively low. Among them, polyimide (PI) is one of the most attractive matrixes because of its high thermal stability. Instead of the mono thermal imidization method to fabricate multilayer PI nanocomposites in the literature, a novel method was proposed herein to better control the multilayer morphology, which could help to further enhance the energy storage properties. The method's effect on the morphology especially on the interfaces between adjacent layers was studied, and then the mechanism of breakdown strength change was discussed by a proposed model based on bipolar charge transport. The sandwich-structured PI nanocomposites, composed of the middle polarization layer with high BaTiO3 (BT) content and the two outer insulation layers with low BT content, were fabricated. Enhanced breakdown field and discharged energy density of 550 kV/mm and 5.1 J/cm3 with the efficiency of about 70% were achieved, while keeping a high thermal stability (500 kV/mm and 3.9 J/cm3 at 100 °C). This work presents a promising polymer nanocomposite for energy storage capacitors especially in extreme temperature environments, and a new concept to fabricate multilayer dielectric composites. |
| first_indexed | 2024-12-22T03:01:42Z |
| format | Article |
| id | doaj.art-0a830e7e20b54421aea8499cad413c92 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-12-22T03:01:42Z |
| publishDate | 2021-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-0a830e7e20b54421aea8499cad413c922022-12-21T18:41:09ZengElsevierMaterials & Design0264-12752021-01-01197109270Enhanced energy storage properties of thermostable sandwich-structured BaTiO3/polyimide nanocomposites with better controlled interfacesJiasheng Ru0Daomin Min1Michael Lanagan2Shengtao Li3George Chen4State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, PR China; Materials Research Institute, The Pennsylvania State University, University Park, PA 16802, USAState Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, PR ChinaMaterials Research Institute, The Pennsylvania State University, University Park, PA 16802, USA; Corresponding authors.State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, PR China; Corresponding authors.State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, PR ChinaThe energy density of polymers for high temperature applications is still relatively low. Among them, polyimide (PI) is one of the most attractive matrixes because of its high thermal stability. Instead of the mono thermal imidization method to fabricate multilayer PI nanocomposites in the literature, a novel method was proposed herein to better control the multilayer morphology, which could help to further enhance the energy storage properties. The method's effect on the morphology especially on the interfaces between adjacent layers was studied, and then the mechanism of breakdown strength change was discussed by a proposed model based on bipolar charge transport. The sandwich-structured PI nanocomposites, composed of the middle polarization layer with high BaTiO3 (BT) content and the two outer insulation layers with low BT content, were fabricated. Enhanced breakdown field and discharged energy density of 550 kV/mm and 5.1 J/cm3 with the efficiency of about 70% were achieved, while keeping a high thermal stability (500 kV/mm and 3.9 J/cm3 at 100 °C). This work presents a promising polymer nanocomposite for energy storage capacitors especially in extreme temperature environments, and a new concept to fabricate multilayer dielectric composites.http://www.sciencedirect.com/science/article/pii/S0264127520308054Sandwich structurePolyimide nanocompositesEnergy storageEnergy densityInterfaceBreakdown mechanism |
| spellingShingle | Jiasheng Ru Daomin Min Michael Lanagan Shengtao Li George Chen Enhanced energy storage properties of thermostable sandwich-structured BaTiO3/polyimide nanocomposites with better controlled interfaces Materials & Design Sandwich structure Polyimide nanocomposites Energy storage Energy density Interface Breakdown mechanism |
| title | Enhanced energy storage properties of thermostable sandwich-structured BaTiO3/polyimide nanocomposites with better controlled interfaces |
| title_full | Enhanced energy storage properties of thermostable sandwich-structured BaTiO3/polyimide nanocomposites with better controlled interfaces |
| title_fullStr | Enhanced energy storage properties of thermostable sandwich-structured BaTiO3/polyimide nanocomposites with better controlled interfaces |
| title_full_unstemmed | Enhanced energy storage properties of thermostable sandwich-structured BaTiO3/polyimide nanocomposites with better controlled interfaces |
| title_short | Enhanced energy storage properties of thermostable sandwich-structured BaTiO3/polyimide nanocomposites with better controlled interfaces |
| title_sort | enhanced energy storage properties of thermostable sandwich structured batio3 polyimide nanocomposites with better controlled interfaces |
| topic | Sandwich structure Polyimide nanocomposites Energy storage Energy density Interface Breakdown mechanism |
| url | http://www.sciencedirect.com/science/article/pii/S0264127520308054 |
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