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Achieving ultrahigh energy storage performance in bismuth magnesium titanate film capacitors via amorphous-structured engineering

Abstract

Pure perovskite Bi(Mg0.5Tix)O3 (abbreviated as BMTx) thin films are successfully fabricated on Pt/Ti/SiO2/Si substrates by sol-gel method, where the excess TiO2 with amorphous-structure is designed to improve the energy storage performance. The dielectric breakdown strength is found to be abruptly improved for sample with x≥0.65 due to the synergistic contributions from the fine grain size and amorphous phase structure, which greatly decreases the leakage current. Of particular significance is that BMTx with x=0.75 exhibits a super high recoverable energy storage density of 126 J/cm3 under 5000 kV/cm, demonstrating the great potential of environmentally friendly BMTx thin films for energy storage capacitor applications.

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Publication details

The article was received on 29 Jul 2019, accepted on 04 Oct 2019 and first published on 07 Oct 2019


Article type: Paper
DOI: 10.1039/C9TC04121D
J. Mater. Chem. C, 2019, Accepted Manuscript

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    Achieving ultrahigh energy storage performance in bismuth magnesium titanate film capacitors via amorphous-structured engineering

    J. Xie, H. Liu, Y. Zhonghua, H. Hao, Y. Xie, Z. Li, M. cao and S. Zhang, J. Mater. Chem. C, 2019, Accepted Manuscript , DOI: 10.1039/C9TC04121D

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