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无铅CaTiO3–Bi(Mg1/2Sb2/3)O3线性介电陶瓷的储能密度与效率提升
Enhanced energy-storage density and efficiency of lead-free CaTiO3–Bi(Mg1/2Sb2/3)O3 linear dielectric ceramics
| 作者 | Chenggeng Yao |
| 期刊 | Journal of Materials Science: Materials in Electronics |
| 出版日期 | 2025年1月 |
| 卷/期 | 第 36.0 卷 |
| 技术分类 | 储能系统技术 |
| 技术标签 | 电池管理系统BMS |
| 相关度评分 | ★★★★★ 5.0 / 5.0 |
| 关键词 | 陶瓷电容器 无铅介电材料 储能密度 钙钛矿结构 电介质性能 |
语言:
中文摘要
用于储能器件的陶瓷基电容器需要同时具备高的能量密度和高效率。为了满足高性能无铅介电电容器的生产需求，本研究设计了(1−x)CaTiO3–BiMgSb((1−x)CT-BMS)（x = 0.05, 0.10, 0.15 和 0.20）陶瓷材料。研究表明，在击穿场强（Eb）为536 kV/cm的条件下，0.90CT-0.10BMS陶瓷表现出优异的总储能密度（Wtotal = 2.56 J/cm³）、较高的可回收储能密度（Wrec = 2.28 J/cm³）以及高效率（η = 89%）。此外，0.90CT-0.10BMS陶瓷还实现了优异的电流密度（CD = 598.4 A/cm²）和功率密度（PD = 53.56 MW/cm³）。同时，该陶瓷在较宽的温度范围（20–160 °C）和频率范围（1–100 Hz）内均表现出良好的稳定性。由于其优异的储能性能，0.90CT-0.10BMS陶瓷在高功率电子器件中具有广阔的应用前景。
English Abstract
Ceramic-based capacitors for energy storage devices require simultaneously high energy density and efficiency. In order to meet the production requirements of high performance lead-free dielectric capacitor, we design (1− x )CaTiO 3 –BiMgSb((1− x )CT-BMS) ( x = 0.05, 0.10, 0.15, and 0.20) ceramics in this study. According to research, 0.90CT-0.10BMS ceramic exhibit excellent total energy density ( W total = 2.56 J/cm 3 ), great recyclable energy storage density ( W rec = 2.28 J/cm 3 ) and high efficiency ( η = 89%) under the breakdown strength ( E b ) of 536 kV/cm. What is more, 0.90CT-0.10BMS ceramic achieved excellent current density ( C D = 598.4 A/cm 2 ), power density (P D = 53.56 MW/cm 3 ). In addition, 0.90CT-0.10BMS ceramic has excellent temperature range (20–160 °C) and frequency (1–100 Hz) stability. 0.90CT-0.10BMS ceramic highly perspective in high-power electronic devices due to the excellent energy storage properties.
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SunView 深度解读
该无铅陶瓷电容器技术展现出高能量密度(2.28 J/cm³)和高效率(89%)特性,对阳光电源ST系列储能变流器和PowerTitan系统的直流母线电容、滤波电容优化具有重要参考价值。其宽温域稳定性(20-160°C)和高功率密度(53.56 MW/cm³)特性可提升PCS在极端工况下的可靠性,减小无源器件体积,助力储能系统功率密度提升。该材料的快速充放电能力对SG系列逆变器的IGBT/SiC驱动电路、EMI滤波设计亦有借鉴意义,可推动下一代高频化、小型化电力电子装置开发。