Novel Sodium Niobate-Based Lead-Free Ceramics as New Environment-Friendly Energy Storage Materials with High Energy Density, High Power Density, and Excellent Stability,ACS Sustainable Chemistry & Engineering

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Novel Sodium Niobate-Based Lead-Free Ceramics as New Environment-Friendly Energy Storage Materials with High Energy Density, High Power Density, and Excellent Stability
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2018-09-07 00:00:00 , DOI: 10.1021/acssuschemeng.8b01926
Mingxing Zhou _{1,

2} , Ruihong Liang ₁ , Zhiyong Zhou ₁ , Shiguang Yan ₁ , Xianlin Dong _{1,

3}

Affiliation

Recently, ceramic capacitors with fast charge–discharge performance and excellent energy storage characteristics have received considerable attention. Novel NaNbO₃-based lead-free ceramics (0.80NaNbO₃-0.20SrTiO₃, abbreviated as 0.80NN-0.20ST), featuring ultrahigh energy storage density, ultrahigh power density, and ultrafast discharge performance, were designed and prepared in this study. These 0.80NN-0.20ST ceramics exhibited a high breakdown strength of 323 kV/cm, attributable to their small grain size and dense microstructure, a recoverable energy storage density of 3.02 J/cm³, and an energy storage efficiency of 80.7% at an applied electric field of 310 kV/cm. The excellent stability of energy storage properties in frequency (0.1–1000 Hz), temperature (20–120 °C), and fatigue resistance (cycle number: 10⁵) were also observed in the 0.80NN-0.20ST ceramics. In contrast with other recently reported lead-free ceramic-based dielectric capacitors, the 0.80NN-0.20ST ceramics display a high energy storage efficiency combined with a high recoverable energy storage density, which indicates that they have wide application foreground and potential in the field of energy storage. These ceramics also show a considerable current density of 677 A/cm², an ultrahigh power density of 23.7 MW/cm³, and a short release duration (∼225 ns). This study brings the NaNbO₃-based ceramics into a new chapter of research and application of energy storage dielectric capacitors.

中文翻译：

新颖的铌酸钠基无铅陶瓷，它是具有高能量密度，高功率密度和出色稳定性的新型环保储能材料

近年来，具有快速充放电性能和出色的储能特性的陶瓷电容器受到了广泛的关注。设计并制备了具有超高能量存储密度，超高功率密度和超快放电性能的新型基于NaNbO ₃的无铅陶瓷（0.80NaNbO ₃ -0.20SrTiO ₃，缩写为0.80NN-0.20ST）。这些0.80NN-0.20ST陶瓷由于其较小的晶粒尺寸和致密的微结构而具有323 kV / cm的高击穿强度，可恢复的储能密度为3.02 J / cm ^3。，在310 kV / cm的施加电场下的储能效率为80.7％。在0.80NN-0.20ST陶瓷中，还观察到了能量存储特性在频率（0.1–1000 Hz），温度（20–120°C）和抗疲劳性（循环数：10 ⁵）方面的出色稳定性。与其他最近报道的无铅陶瓷基介电电容器相比，0.80NN-0.20ST陶瓷具有高能量存储效率和高可回收能量存储密度，这表明它们在该领域具有广阔的应用前景和潜力能量存储。这些陶瓷还显示出677 A / cm ²的可观电流密度，23.7 MW / cm ³的超高功率密度。，释放时间短（约225 ns）。这项研究将基于NaNbO ₃的陶瓷带入了储能介电电容器研究和应用的新篇章。

更新日期：2018-09-07

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