A series of (1-x)K_0.5Na_0.5NbO₃-xBa(Zn_1/3Nb_2/3)O₃ ((1-x)KNN-xBZN) nanostructural ceramics was successfully synthesised via solid-state reactions. These nanostructural ceramics exhibited high energy storage density compared with pure KNN ceramics. Further analysis of their dielectric/ferroelectric properties and structures revealed that the addition of BZN alloy disrupted the long-range order of the ferroelectric lattice of pure KNN and favoured the formation of ferroelectric islands and/or polar nano-regions. Consequently, the nanostructured ceramic with x = 0.05 exhibited ultrahigh energy storage density, W, of approximately 9.14 J/cm³ and recoverable energy storage density, W_rec, of approximately 4.87 J/cm³ under a fairly low applied electrical field (220 kV/cm). These values exceed the highest values ever reported for KNN-based bulk ceramics. In addition, both excellent fatigue endurance (10⁵ cycles) and temperature stability (Δε'/ε_100°C < 15 % in the range 30–390 °C) were realised with the 0.97KNN-0.03BZN ceramic. Their excellent energy storage properties render KNN-based ceramics potential candidates for application in pulsed-power systems.

通过固相反应成功地合成了一系列（1- x）K _0.5 Na _0.5 NbO ₃ - x Ba（Zn _1/3 Nb _2/3）O ₃（（1- x）KNN- x BZN）纳米结构陶瓷。 。与纯KNN陶瓷相比，这些纳米结构陶瓷具有较高的储能密度。对其介电/铁电特性和结构的进一步分析表明，添加BZN合金会破坏纯KNN的铁电晶格的长程顺序，并有利于铁电岛和/或极性纳米区的形成。因此，具有x的纳米结构陶瓷在相当低的施加电场（220 kV / cm）下，= 0.05时，显示出约9.14 J / cm ^3的超高储能密度W和约4.87 J / cm ^3的可回收储能密度W _rec。这些值超过了基于KNN的块状陶瓷所报告的最高值。此外，兼具优异的耐疲劳性（10 ⁵个循环）和温度稳定性（Δ ε” / ε _100℃ <范围30-390℃的15％）与所述0.97KNN-0.03BZN陶瓷实现。它们出色的储能特性使基于KNN的陶瓷有可能在脉冲功率系统中应用。