Entropy-driven multi-scale enhancement of energy storage performance in (Bi0.5Na0.5)0.5Ba0.5TiO3 ceramics
The dielectric ceramic capacitor serves as the core energy storage element in the pulsed power system. However, the inability to balance high energy storage density (Wrec) and energy storage efficiency (η) has become a technical challenge limiting the miniaturisation of pulsed power devices. This wo...
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2025-09-01
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| Series: | Journal of Materiomics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352847825000450 |
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| author | Yue Pan Yu Zhang Qinpeng Dong Jiangping Huang Xiuli Chen Xu Li Lian Deng Huanfu Zhou |
| author_facet | Yue Pan Yu Zhang Qinpeng Dong Jiangping Huang Xiuli Chen Xu Li Lian Deng Huanfu Zhou |
| author_sort | Yue Pan |
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| description | The dielectric ceramic capacitor serves as the core energy storage element in the pulsed power system. However, the inability to balance high energy storage density (Wrec) and energy storage efficiency (η) has become a technical challenge limiting the miniaturisation of pulsed power devices. This work proposes an entropy-driven strategy, through introducing Sr(Sc0.5Nb0.5)O3 (SSN) as an end-member, to modulate the phase structure and suppress interfacial polarization in the medium entropy matrix, (Bi0.5Na0.5)0.5Ba0.5TiO3 (BN50BT). The introduction of SSN endows BN50BT ceramics with a multiphase structure of P4mm and Pm3¯m and successfully establishes a super-paraelectric (SPE) state at room temperature, improving the polarization response. Furthermore, the incorporation of SSN effectively suppresses interfacial polarization and enhances the Eb of the system. Thus, the 0.80 [(Bi0.5Na0.5)0.5Ba0.5TiO3]-0.20Sr(Sc0.5Nb0.5)O3 ceramics exhibit a decent Wrec of 6.24 J/cm3 and a high η of 89.02%, along with remarkable stabilities over a wide frequency range (5–150 Hz) and temperature range (25–140 °C). This work demonstrates that the entropy-driven construction of a multiphase-coexisting SPE state, along with suppressed interfacial polarization, represents a feasible approach to optimizing the energy storage properties of dielectric ceramics. |
| format | Article |
| id | doaj-art-50ec21780acc4891b00d8c2a5a5cb147 |
| institution | Kabale University |
| issn | 2352-8478 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
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| series | Journal of Materiomics |
| spelling | doaj-art-50ec21780acc4891b00d8c2a5a5cb1472025-08-20T03:26:57ZengElsevierJournal of Materiomics2352-84782025-09-0111510105510.1016/j.jmat.2025.101055Entropy-driven multi-scale enhancement of energy storage performance in (Bi0.5Na0.5)0.5Ba0.5TiO3 ceramicsYue Pan0Yu Zhang1Qinpeng Dong2Jiangping Huang3Xiuli Chen4Xu Li5Lian Deng6Huanfu Zhou7Key Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, School of Materials Science and Engineering, Guilin University of Technology, Guilin, 541004, ChinaKey Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, School of Materials Science and Engineering, Guilin University of Technology, Guilin, 541004, ChinaKey Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, School of Materials Science and Engineering, Guilin University of Technology, Guilin, 541004, ChinaKey Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, School of Materials Science and Engineering, Guilin University of Technology, Guilin, 541004, ChinaCorresponding author.; Key Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, School of Materials Science and Engineering, Guilin University of Technology, Guilin, 541004, ChinaCorresponding author.; Key Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, School of Materials Science and Engineering, Guilin University of Technology, Guilin, 541004, ChinaCorresponding author.; Key Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, School of Materials Science and Engineering, Guilin University of Technology, Guilin, 541004, ChinaKey Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, School of Materials Science and Engineering, Guilin University of Technology, Guilin, 541004, ChinaThe dielectric ceramic capacitor serves as the core energy storage element in the pulsed power system. However, the inability to balance high energy storage density (Wrec) and energy storage efficiency (η) has become a technical challenge limiting the miniaturisation of pulsed power devices. This work proposes an entropy-driven strategy, through introducing Sr(Sc0.5Nb0.5)O3 (SSN) as an end-member, to modulate the phase structure and suppress interfacial polarization in the medium entropy matrix, (Bi0.5Na0.5)0.5Ba0.5TiO3 (BN50BT). The introduction of SSN endows BN50BT ceramics with a multiphase structure of P4mm and Pm3¯m and successfully establishes a super-paraelectric (SPE) state at room temperature, improving the polarization response. Furthermore, the incorporation of SSN effectively suppresses interfacial polarization and enhances the Eb of the system. Thus, the 0.80 [(Bi0.5Na0.5)0.5Ba0.5TiO3]-0.20Sr(Sc0.5Nb0.5)O3 ceramics exhibit a decent Wrec of 6.24 J/cm3 and a high η of 89.02%, along with remarkable stabilities over a wide frequency range (5–150 Hz) and temperature range (25–140 °C). This work demonstrates that the entropy-driven construction of a multiphase-coexisting SPE state, along with suppressed interfacial polarization, represents a feasible approach to optimizing the energy storage properties of dielectric ceramics.http://www.sciencedirect.com/science/article/pii/S2352847825000450Entropy-drivenSuperparaelectric stateInterfacial polarizationEnergy storage performance |
| spellingShingle | Yue Pan Yu Zhang Qinpeng Dong Jiangping Huang Xiuli Chen Xu Li Lian Deng Huanfu Zhou Entropy-driven multi-scale enhancement of energy storage performance in (Bi0.5Na0.5)0.5Ba0.5TiO3 ceramics Journal of Materiomics Entropy-driven Superparaelectric state Interfacial polarization Energy storage performance |
| title | Entropy-driven multi-scale enhancement of energy storage performance in (Bi0.5Na0.5)0.5Ba0.5TiO3 ceramics |
| title_full | Entropy-driven multi-scale enhancement of energy storage performance in (Bi0.5Na0.5)0.5Ba0.5TiO3 ceramics |
| title_fullStr | Entropy-driven multi-scale enhancement of energy storage performance in (Bi0.5Na0.5)0.5Ba0.5TiO3 ceramics |
| title_full_unstemmed | Entropy-driven multi-scale enhancement of energy storage performance in (Bi0.5Na0.5)0.5Ba0.5TiO3 ceramics |
| title_short | Entropy-driven multi-scale enhancement of energy storage performance in (Bi0.5Na0.5)0.5Ba0.5TiO3 ceramics |
| title_sort | entropy driven multi scale enhancement of energy storage performance in bi0 5na0 5 0 5ba0 5tio3 ceramics |
| topic | Entropy-driven Superparaelectric state Interfacial polarization Energy storage performance |
| url | http://www.sciencedirect.com/science/article/pii/S2352847825000450 |
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