高储能密度和功率密度的铌酸钠基无铅陶瓷

High energy storage density and power density achieved simultaneously in NaNbO₃-based lead-free ceramics via antiferroelectricity enhancement

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桂林理工大学周焕福教授团队在Journal of Materiomics 第7卷第3期发表了题为“High energy storage density and power density achieved simultaneously in NaNbO₃-based lead-free ceramics via antiferroelectricity enhancement”的研究论文。

文章中报道了一种稳定反铁电相并同时构造局域随机场的策略。基于该策略，设计并制备(1-x)NaNbO₃-xBi(Ni_1/2Sn_1/2)O₃[(1-x)NN-xBNS, x = 0.05, 0.10, 0.15, 0.20和0.22] 系列固溶体。最终，在0.90NN-0.10BNS陶瓷中同时获取了高的可回收储能密度(5.0 J/cm³)和优异的储能稳定性[温度(20-140°C)、频率(1-100Hz)和疲劳(1-10⁴)特性])。此外，该组分也同时呈现大的功率密度(100.5 MW/cm³) 和超短的放电时间(46.5 ns)。这些结果进一步证实了我们策略的可行性，这可能为后续开发高储能特性的NaNbO₃基无铅陶瓷材料提供指导意义。

DOI:10.1016/j.jmat.2020.11.016

Highlights

· Achieving ultrahigh U_rec of 5.00 J/cm³ and P_D of 100.5 MW/cm³ in 0.10BNS ceramics.

· An excellent stability has been achieved in 0.10BNS ceramics.

· An ultrashort t_0.9 of 46.5 ns was achieved in 0.10BNS ceramics.

Graphical abstract

Schematic diagram of methods applied to achieve a high recoverable energy storage density (U_rec).

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Fig. 1 (a) XRD patterns of (1-x)NN-xBNS ceramics. (b) Representative SEM images for (1-x)NN-xBNS ceramics. (c) Rietveld refinement for 0.9NN-0.10BNS at RT.

Fig. 2 (a)-(e) Unipolar P-E loops of (1-x)NN-xBNS ceramics at different electric field strengths. (f) Energy storage properties of (1-x)NN-xBNS ceramics at different Eb strengths. (g) Energy storage properties of (1-x)NN-xBNS ceramics at different electric field strengths. (h) A comparison of Urec and η values of 0.90NN-0.10BNS ceramics with those of other reported lead-free ceramics.

Fig. 3 Energy storage properties of 0.90NN-0.10BNS ceramics at various temperatures, frequencies, and cycles.

Fig. 4 (a)-(d) Underdamped discharge characteristics of 0.90NN-0.10BNS ceramics under different electricfield strengths and temperatures. (e)-(f) Overdamped discharge characteristics of 0.90NN-0.10BNS ceramics atdifferent electric fieldstrengths and temperatures.

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作者介绍

Dr. Xiuli Chen is a Professor at Guilin University of Technology. She received her PhD degree in School of Materials Science and Engineering from Northwestern Polytechnical University in 2009. Her work focused on designing novel high-performance lead-free dielectric ceramic materials and their application for energy storage/piezoelectric sensor, and finding the correlations between the microstructure (such as crystal structure, domain wall, defect, etc.) and physical performance.

Dr. Huanfu Zhou is a Professor of Guilin University of Technology, and also vice director of the discipline construction office of Guilin University of Technology. He received his PhD degree in School of Electronic and Information Engineering from Xi’an Jiaotong University in 2009. He is the standing committee member and standing vice secretary general of Professional Committee for Key Materials and Technologies of Chinese Electronic Components. His work focused on the research of information functional materials and devices.

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Journal of Materiomics（JMAT），由中国硅酸盐学会主办。该刊引领材料学科发展前沿，注重报道以材料设计、制备、表征及应用技术为主线的系统性前沿研究成果。点击文末“阅读全文“可免费获取所有论文全文。  Journal of Materiomics 入选首批中国科技期刊卓越行动计划（2020年度评估为优秀），被SCI和Scopus收录，影响因子6.425(Materials Science, Multidisciplinary；Physics，Applied；Chemistry，Physical均位于Q1分区)，Citescore为8.8。

  The Journal of Materiomics is indexed by SCI  (IF=6.425, rank in Q1 of Materials Science, Multidisciplinary；Physics，Applied；Chemistry，Physical) and Scopus (Citescore 8.8), aims to provide a continuous forum for the dissemination of research in the general field of materials science, particularly systematic studies of the relationships among composition, processing, structure, property, and performance of advanced materials. Supported by the Chinese Ceramic Society, the Journal of Materiomics is a peer-reviewed open-access journal.

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原文链接：https://www.sciencedirect.com/science/article/pii/S2352847820305244

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