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High-energy storage properties over a broad temperature range in La2O3-modified intermediate shell of BSZT-based lead-free ceramics

  • 期刊论文

  • 发表日期：

    2024年12月30日

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  • Rong Ma,
  • Tongyao Pang,
  • Min Xi,
  • Shuo Song,
  • Jinhong Li,
  • Shuhua Liu,
  • Bin Cui,
  • Dongmei Wang,
  • Weiwei Zhao,
  • Weixing Zhao,
  • Zhuonan Huang,
  • Dengwei Hu

摘要

Ba0.8Sr0.2Zr0.1Ti0.9O3@MgO-Al2O3-La2O3@ZnO-B2O3-SiO2 (BSZT@MgO-Al2O3-La2O3@ZBSO) lead-free micro-powders and double-core ceramics were prepared by a deposition and solvent addition method. La2O3 was added into the intermediate transition layer to increase the charge energy storage density and temperature stability of the ceramics. With increasing the amount of La2O3 deposition, the dielectric constant, polarization strength and energy storage density of the ceramics first increased and then decreased. When the amount of La2O3 coating is 0.8 mol%, the ceramic has the highest dielectric constant of 4988. The energy storage density of the ceramics reaches a maximum of 1.06 J/cm3, and the efficiency of the ceramics is higher than 70% when the amount of La2O3 coating is 0.8 mol%. When the amount of La2O3 coating is less than 0.8 mol%, the ceramic TCC meets the X8R standard.