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Excellent energy storage performance of niobate-based glass-ceramics via introduction of nucleating agent
Journal of Materiomics ( IF 8.4 ) Pub Date : 2022-03-11 , DOI: 10.1016/j.jmat.2022.03.001
Changshuai Liu 1 , Shufeng Xie 1 , Hairui Bai 1 , Fei Yan 1 , Tongtong Fu 1 , Bo Shen 1 , Jiwei Zhai 1
Affiliation  

For glass-ceramics, how to realize the collaborative optimization of BDS and permittivity is the key to improve the energy storage density. In this work, ZrO2 is introduced into BPKNAS glass-ceramics as nucleating agent to promote crystal development of glass-ceramics and then achieve high permittivity. When 1.5 mol% ZrO2 is added, the glass-ceramics have the highest permittivity (∼128.59) and meanwhile possess high BDS (1948.90 kV/cm) due to the dense microstructure. Therefore, BPKNAS-1.5ZrO2 glass-ceramics has the highest theoretical energy storage density (21.62 J/cm3). Moreover, the permittivity variation of BPKNAS-1.5ZrO2 glass-ceramics is less than 6 % in the wide temperature range from −80 to 300 °C, showing excellent temperature stability. In addition, BPKNAS-1.5ZrO2 glass-ceramics possesses ultrahigh power density, which reaches up to 382.40 MW/cm3 in overdamped circuit. The above evidence shows that BPKNAS-1.5ZrO2 glass-ceramics with ultrahigh energy storage density and power density is very competitive in the field of energy storage applications.



中文翻译:

成核剂引入铌酸盐基微晶玻璃具有优异的储能性能

对于微晶玻璃,如何实现北斗与介电常数的协同优化是提高储能密度的关键。本工作将ZrO 2作为成核剂引入BPKNAS微晶玻璃中,促进微晶玻璃的晶体发育,进而实现高介电常数。当添加1.5 mol% ZrO 2时,微晶玻璃具有最高的介电常数(~128.59),同时由于微结构致密而具有高BDS(1948.90 kV/cm)。因此,BPKNAS-1.5ZrO 2微晶玻璃具有最高的理论储能密度(21.62 J/cm 3)。此外,BPKNAS-1.5ZrO 2的介电常数变化微晶玻璃在 -80 至 300 °C 的宽温度范围内低于 6%,显示出出色的温度稳定性。此外,BPKNAS-1.5ZrO 2微晶玻璃具有超高的功率密度,在过阻尼电路中可达382.40 MW/cm 3。上述证据表明,具有超高储能密度和功率密度的BPKNAS-1.5ZrO 2微晶玻璃在储能应用领域具有很强的竞争力。

更新日期:2022-03-11
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