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切换电荷和可回收能量密度的优化,通过结构转化介导到酸替代的BaNiO矿矿中₃

Rana Muhammad Ahmad Khan Manj¹, Shahid M Ramay², M A Shar³

¹Centre of Excellence in Solid State Physics, University of the Punjab Lahore-54590 Pakistan satiq.cssp@pu.edu.pk.

|May 16, 2024

概括

无铁电矿被合成用于储能. Ba_1-xSr_xNiO₃陶显示了增强的可回收能量密度和效率,SrNiO₃是快速切换应用的有希望的候选人.

科学领域:

材料科学材料科学材料科学
固态化学固态化学
储能储能储能储能储能储能

背景情况:

铁电矿对于储能和脉冲动力装置至关重要.
提高它们的能量存储和切换能力对于先进的应用来说至关重要.
阴离子替代提供了一条定制铁电性质的途径.

研究的目的:

为了合成和描述无Ba_1-xSr_xNiO₃ (x = 0.00, 0.33, 0.67, 1.00) 陶.
为了研究Sr-content对结构性,微结构性和铁电性质的影响.
评估它们对储能和快速切换应用的潜力.

主要方法:

用于陶制造的Sol-gel自动燃烧技术.
用瑞特维尔德精细化进行X射线衍射,用于结构分析.
扫描电子显微镜 (SEM) 用于微观结构的研究.
能量分散式X射线光谱 (EDS) 用于元素组成的验证.
铁电 (P-E环),电导率和泄漏电流的测量.

主要成果:

六角矿结构证实对所有组合.
增加的含量导致了更大的粒度和聚合.
极化和强制场随着 Sr 含量增加而减少.
可回收能量密度 (W_rec) 增加,最大值为Ba_0.33Sr_0.67NiO_3.
SrNiO₃表现出最小的能量损失 (最高效率~47.21%) 和低泄漏电流 (~10-7A).
SrNiO₃显示出较低的电导率和最小的切换电荷密度.

结论:

Ba_1-xSr_xNiO₃陶是通过sol-gel自燃成功合成的.
替代有效调整铁电性质,提高可回收能量密度.
由于其优化的特性,SrNiO₃显示了快速切换和高效的储能应用的巨大潜力.

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