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Bismuth ferrite-based lead-free high-entropy energy storage ceramic material and preparation method thereof
The invention provides a bismuth ferrite-based lead-free high-entropy energy storage ceramic material and a preparation method thereof, belongs to the field of dielectric energy storage ceramic materials, is applied to a pulse power capacitor, and has a chemical composition of (Bi < 0.5 > Ba < 0.1 > Sr < 0.1 > Ca < 0.2 > Na < 0.1 >) (Fe < 0.5 > Ti < 0.3 > Zr < 0.1 > Nb < 0.1 >) O3. By utilizing the advantage of large spontaneous polarization of ferroelectric BiFeO3, other perovskite with different tolerance factors and ion polarization is added into BiFeO3 by utilizing a high-entropy strategy, and ions with different valence states and radiuses are introduced into A and B sites, so that a stable relaxor ferroelectric phase structure is obtained; and finally, the bismuth ferrite-based lead-free high-entropy energy storage ceramic material with high energy storage density and high energy storage efficiency is obtained, so that the bismuth ferrite-based lead-free high-entropy energy storage ceramic material can meet the actual application requirements in lead-free energy storage capacitors.
本发明提供一种铁酸铋基无铅高熵储能陶瓷材料及制备方法，属于电介质储能陶瓷材料领域，应用于脉冲功率电容器，化学组成为(Bi0.5Ba0.1Sr0.1Ca0.2Na0.1)(Fe0.5Ti0.3Zr0.1Nb0.1)O3。利用铁电体BiFeO3大的自发极化的优势，利用高熵策略向BiFeO3中加入其他不同容忍因子和离子极化的钙钛矿组成，同时也在A和B位引入了不同价态和半径的离子，获得稳定的弛豫铁电相结构，最终得到同时具有高储能密度和高储能效率的铁酸铋基无铅高熵储能陶瓷材料，使其能够满足无铅储能电容器中的实际应用需求。
Bismuth ferrite-based lead-free high-entropy energy storage ceramic material and preparation method thereof
The invention provides a bismuth ferrite-based lead-free high-entropy energy storage ceramic material and a preparation method thereof, belongs to the field of dielectric energy storage ceramic materials, is applied to a pulse power capacitor, and has a chemical composition of (Bi < 0.5 > Ba < 0.1 > Sr < 0.1 > Ca < 0.2 > Na < 0.1 >) (Fe < 0.5 > Ti < 0.3 > Zr < 0.1 > Nb < 0.1 >) O3. By utilizing the advantage of large spontaneous polarization of ferroelectric BiFeO3, other perovskite with different tolerance factors and ion polarization is added into BiFeO3 by utilizing a high-entropy strategy, and ions with different valence states and radiuses are introduced into A and B sites, so that a stable relaxor ferroelectric phase structure is obtained; and finally, the bismuth ferrite-based lead-free high-entropy energy storage ceramic material with high energy storage density and high energy storage efficiency is obtained, so that the bismuth ferrite-based lead-free high-entropy energy storage ceramic material can meet the actual application requirements in lead-free energy storage capacitors.
本发明提供一种铁酸铋基无铅高熵储能陶瓷材料及制备方法，属于电介质储能陶瓷材料领域，应用于脉冲功率电容器，化学组成为(Bi0.5Ba0.1Sr0.1Ca0.2Na0.1)(Fe0.5Ti0.3Zr0.1Nb0.1)O3。利用铁电体BiFeO3大的自发极化的优势，利用高熵策略向BiFeO3中加入其他不同容忍因子和离子极化的钙钛矿组成，同时也在A和B位引入了不同价态和半径的离子，获得稳定的弛豫铁电相结构，最终得到同时具有高储能密度和高储能效率的铁酸铋基无铅高熵储能陶瓷材料，使其能够满足无铅储能电容器中的实际应用需求。
Bismuth ferrite-based lead-free high-entropy energy storage ceramic material and preparation method thereof
一种铁酸铋基无铅高熵储能陶瓷材料及制备方法
23.02.2024
Patent
Elektronische Ressource
Chinesisch
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