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High-Performance Relaxor Ferroelectric Materials for Energy Storage Applications

机译：储能应用中的高性能弛豫铁电材料

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摘要

Relaxor ferroelectrics usually possess low remnant polarizations and slim hystereses, which can provide high saturated polarizations and superior energy conversion efficiencies, thus receiving increasing interest as energy storage materials with high discharge energy densities and fast discharge ability. In this study, a relaxor ferroelectric multilayer energy storage ceramic capacitor (MLESCC) based on 0.87BaTiO(3)-0.13Bi(Zn-2/3(Nb0.85Ta0.15)(1/3))O-3 (BT-BZNT) with inexpensive Ag/Pd inner electrodes is prepared by the tape casting method. The MLESCC with two dielectric layers (layer thicknesses of 5 mu m) sintered by a two-step sintering method exhibits excellent energy storage properties with a record-high discharge energy density of 10.12 J cm(-3), a high energy efficiency of 89.4% achieved at an electric field of 104.7 MV m(-1), a high temperature stability of the energy storage density (with minimal variation of +/- 5%), and energy efficiency (90%) over a range of -75 to 150 degrees C at 40 MV m(-1). These results suggest that the BT-BZNT relaxor ferroelectric ceramic material can provide realistic solutions for high-power energy storage capacitors.
机译：弛豫铁电体通常具有较低的残余极化和纤细的磁滞现象，可以提供高的饱和极化和优异的能量转换效率，因此，作为具有高放电能量密度和快速放电能力的储能材料，人们越来越感兴趣。在这项研究中，基于0.87BaTiO（3）-0.13Bi（Zn-2 / 3（Nb0.85Ta0.15）（1/3））O-3（BT-）的弛豫铁电多层储能陶瓷电容器（MLESCC）通过带式流延法制备具有便宜的Ag / Pd内部电极的BZNT）。通过两步烧结法烧结的具有两个介电层（层厚度为5μm）的MLESCC具有优异的储能性能，具有创纪录的高放电能量密度10.12 J cm（-3），高能量效率89.4在104.7 MV m（-1）的电场下达到的％，在-的范围内储能密度的高温稳定性（最小变化<+/- 5％）和能量效率（> 90％）- 75至150摄氏度，40 MV m（-1）。这些结果表明，BT-BZNT弛豫铁电陶瓷材料可以为大功率储能电容器提供现实的解决方案。

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  • 来源
    《Advanced energy materials》 |2019年第17期|1803048.1-1803048.7|共7页
  • 作者

    Zhao Peiyao; Wang Hongxian; Wu Longwen; Chen Lingling; Cai Ziming; Li Longtu; Wang Xiaohui;

  • 作者单位

    Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Sch Mat Sci & Engn, Beijing 100084, Peoples R China;

    Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Sch Mat Sci & Engn, Beijing 100084, Peoples R China;

    Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Sch Mat Sci & Engn, Beijing 100084, Peoples R China;

    Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Sch Mat Sci & Engn, Beijing 100084, Peoples R China;

    Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Sch Mat Sci & Engn, Beijing 100084, Peoples R China;

    Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Sch Mat Sci & Engn, Beijing 100084, Peoples R China;

    Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Sch Mat Sci & Engn, Beijing 100084, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    energy storage; multilayer ceramic capacitors; relaxor ferroelectric; thermal stability;

    机译：储能多层陶瓷电容器松弛铁电热稳定性;

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