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Achieving ultrahigh energy storage performance in bismuth magnesium titanate film capacitors: Via amorphous-structure engineering

Journal Article


Abstract


  • Pure perovskite Bi(Mg0.5Tix)O3 (abbreviated as BMTx) thin films are successfully fabricated on Pt/Ti/SiO2/Si substrates by a sol-gel method, where the excess TiO2 with an amorphous structure is designed to improve the energy storage performance. The dielectric breakdown strength is found to be abruptly improved for the 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 cm-3 at 5000 kV cm-1, demonstrating the great potential of environmentally friendly BMTx thin films for energy storage capacitor applications.

UOW Authors


  •   Xie, Juan (external author)
  •   Liu, Hanxing (external author)
  •   Yao, Zhonghua (external author)
  •   Hao, Hua (external author)
  •   Xie, Yanjiang (external author)
  •   Li, Zongxin (external author)
  •   Cao, Minghe (external author)
  •   Zhang, Shujun

Publication Date


  • 2019

Citation


  • Xie, J., Liu, H., Yao, Z., Hao, H., Xie, Y., Li, Z., Cao, M. & Zhang, S. (2019). Achieving ultrahigh energy storage performance in bismuth magnesium titanate film capacitors: Via amorphous-structure engineering. Journal of Materials Chemistry C, 7 (43), 13632-13639.

Scopus Eid


  • 2-s2.0-85074762771

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3890

Has Global Citation Frequency


Number Of Pages


  • 7

Start Page


  • 13632

End Page


  • 13639

Volume


  • 7

Issue


  • 43

Place Of Publication


  • United Kingdom

Abstract


  • Pure perovskite Bi(Mg0.5Tix)O3 (abbreviated as BMTx) thin films are successfully fabricated on Pt/Ti/SiO2/Si substrates by a sol-gel method, where the excess TiO2 with an amorphous structure is designed to improve the energy storage performance. The dielectric breakdown strength is found to be abruptly improved for the 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 cm-3 at 5000 kV cm-1, demonstrating the great potential of environmentally friendly BMTx thin films for energy storage capacitor applications.

UOW Authors


  •   Xie, Juan (external author)
  •   Liu, Hanxing (external author)
  •   Yao, Zhonghua (external author)
  •   Hao, Hua (external author)
  •   Xie, Yanjiang (external author)
  •   Li, Zongxin (external author)
  •   Cao, Minghe (external author)
  •   Zhang, Shujun

Publication Date


  • 2019

Citation


  • Xie, J., Liu, H., Yao, Z., Hao, H., Xie, Y., Li, Z., Cao, M. & Zhang, S. (2019). Achieving ultrahigh energy storage performance in bismuth magnesium titanate film capacitors: Via amorphous-structure engineering. Journal of Materials Chemistry C, 7 (43), 13632-13639.

Scopus Eid


  • 2-s2.0-85074762771

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3890

Has Global Citation Frequency


Number Of Pages


  • 7

Start Page


  • 13632

End Page


  • 13639

Volume


  • 7

Issue


  • 43

Place Of Publication


  • United Kingdom