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Ultra-high energy storage performance with mitigated polarization saturation in lead-free relaxors

Journal Article


Abstract


  • Relaxor ferroelectric ceramics have attracted much attention for storing the electricity generated from clean and renewable energy sources due to their high permittivity and near-zero remnant polarization. The polarization of many relaxor based ceramics tends to saturate at high electric fields, however, which limits their energy storage performance. In this study, a lead-free Sn-modified (Na 0.5 Bi 0.5 )TiO 3 -SrTiO 3 system is investigated, where mitigated polarization saturation is observed with the addition of Sn 4+ , as a result of the different electronic configurations between d 10 Sn 4+ and d 0 Ti 4+ . As expected, high energy density of 3.4 J cm -3 and energy efficiency of 90% are simultaneously achieved in (Na 0.25 Bi 0.25 Sr 0.5 )(Ti 0.8 Sn 0.2 )O 3 ceramic. In addition, the ceramic exhibits good thermal stability, with the energy storage property variations below 5% over the temperature range of -20 °C to 150 °C, and satisfactory cycling stability with a variation of less than 8% over 10 5 cycles. All these merits demonstrate that the (Na 0.25 Bi 0.25 Sr 0.5 )(Ti 0.8 Sn 0.2 )O 3 ceramic has great potential for high power energy storage applications.

Publication Date


  • 2019

Citation


  • Yang, L., Kong, X., Cheng, Z. & Zhang, S. (2019). Ultra-high energy storage performance with mitigated polarization saturation in lead-free relaxors. Journal of Materials Chemistry A, 7 (14), 8573-8580.

Scopus Eid


  • 2-s2.0-85063945878

Number Of Pages


  • 7

Start Page


  • 8573

End Page


  • 8580

Volume


  • 7

Issue


  • 14

Place Of Publication


  • United Kingdom

Abstract


  • Relaxor ferroelectric ceramics have attracted much attention for storing the electricity generated from clean and renewable energy sources due to their high permittivity and near-zero remnant polarization. The polarization of many relaxor based ceramics tends to saturate at high electric fields, however, which limits their energy storage performance. In this study, a lead-free Sn-modified (Na 0.5 Bi 0.5 )TiO 3 -SrTiO 3 system is investigated, where mitigated polarization saturation is observed with the addition of Sn 4+ , as a result of the different electronic configurations between d 10 Sn 4+ and d 0 Ti 4+ . As expected, high energy density of 3.4 J cm -3 and energy efficiency of 90% are simultaneously achieved in (Na 0.25 Bi 0.25 Sr 0.5 )(Ti 0.8 Sn 0.2 )O 3 ceramic. In addition, the ceramic exhibits good thermal stability, with the energy storage property variations below 5% over the temperature range of -20 °C to 150 °C, and satisfactory cycling stability with a variation of less than 8% over 10 5 cycles. All these merits demonstrate that the (Na 0.25 Bi 0.25 Sr 0.5 )(Ti 0.8 Sn 0.2 )O 3 ceramic has great potential for high power energy storage applications.

Publication Date


  • 2019

Citation


  • Yang, L., Kong, X., Cheng, Z. & Zhang, S. (2019). Ultra-high energy storage performance with mitigated polarization saturation in lead-free relaxors. Journal of Materials Chemistry A, 7 (14), 8573-8580.

Scopus Eid


  • 2-s2.0-85063945878

Number Of Pages


  • 7

Start Page


  • 8573

End Page


  • 8580

Volume


  • 7

Issue


  • 14

Place Of Publication


  • United Kingdom