Scholarlink

<p>Owing to their superior characteristics including ultra-high power density, outstanding thermal stability, and ultra-short charge–discharge periods, dielectric ceramic-based capacitors have become a core focus of research in the contemporary domain. In the research, a solid-state sintering technique was employed to integrate (Ag<sub>0.2</sub>Sr<sub>0.8</sub>)(Nb<sub>0.2</sub>Sn<sub>0.8</sub>)O<sub>3</sub> (ASNS) into the (Bi<sub>0.5</sub>Na<sub>0.5</sub>)<sub>0.94</sub>Ba<sub>0.06</sub>TiO<sub>3</sub> ceramic. Experimental findings revealed that a moderate ASNS doping exerted no substantial impact on the crystalline phase configuration, yet it enabled effective modulation of grain growth kinetics, thereby realizing refined manipulation of grain dimensions. Concurrently, such doping can elevate the level of disorder among cations located at the A and B-sites, which furnishes favorable prerequisites for the generation of high-dynamic polar nanodomains. Eventually, the resultant material displays dual features of low remanent polarization (<i>P</i><sub>r</sub>) and high saturation polarization (<i>P</i><sub>m</sub>). Test results indicated that the ceramic at <i>x</i> = 0.2 attained an effective energy storage density of 4.08&#xa0;J/cm<sup>3</sup> under 270&#xa0;kV/cm, accompanied by an energy storage efficiency up to 83.3%. It is noteworthy that this composition maintains reliable energy storage capabilities across 20–120&#xa0;℃ and 1–100&#xa0;Hz. Furthermore, the ASNS-doped ceramic demonstrated superior pulse discharge characteristics: its discharge current density reached 960&#xa0;A/cm<sup>2</sup>, a power density of 87.8&#xa0;MW/cm<sup>3</sup>, and the discharge rate t<sub>0.9</sub> was merely 83&#xa0;ns. The modified ceramic possesses notable potential for practical application in high-temperature energy storage device systems.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Regulating energy storage performance of (Bi0.5Na0.5)0.94Ba0.06TiO3 ceramics via (Ag0.2Sr0.8)(Nb0.2Sn0.8)O3 doping under moderate electric field

  • 期刊论文

  • 发表日期：

    2026年4月4日

查看全文
  • Nianshun Zhao,
  • Sha Lu,
  • Juan Hu,
  • Qin Gao,
  • Liujin Chang,
  • Xinyuan Wang,
  • Shubo Zhang,
  • Shoucheng Tong,
  • Jiale Li

摘要

Owing to their superior characteristics including ultra-high power density, outstanding thermal stability, and ultra-short charge–discharge periods, dielectric ceramic-based capacitors have become a core focus of research in the contemporary domain. In the research, a solid-state sintering technique was employed to integrate (Ag0.2Sr0.8)(Nb0.2Sn0.8)O3 (ASNS) into the (Bi0.5Na0.5)0.94Ba0.06TiO3 ceramic. Experimental findings revealed that a moderate ASNS doping exerted no substantial impact on the crystalline phase configuration, yet it enabled effective modulation of grain growth kinetics, thereby realizing refined manipulation of grain dimensions. Concurrently, such doping can elevate the level of disorder among cations located at the A and B-sites, which furnishes favorable prerequisites for the generation of high-dynamic polar nanodomains. Eventually, the resultant material displays dual features of low remanent polarization (Pr) and high saturation polarization (Pm). Test results indicated that the ceramic at x = 0.2 attained an effective energy storage density of 4.08 J/cm3 under 270 kV/cm, accompanied by an energy storage efficiency up to 83.3%. It is noteworthy that this composition maintains reliable energy storage capabilities across 20–120 ℃ and 1–100 Hz. Furthermore, the ASNS-doped ceramic demonstrated superior pulse discharge characteristics: its discharge current density reached 960 A/cm2, a power density of 87.8 MW/cm3, and the discharge rate t0.9 was merely 83 ns. The modified ceramic possesses notable potential for practical application in high-temperature energy storage device systems.