材料科学
储能
电容器
电介质
陶瓷
铅(地质)
工作(物理)
大气温度范围
航程(航空)
相(物质)
工程物理
三元运算
光电子学
纳米技术
复合材料
电气工程
功率(物理)
机械工程
计算机科学
热力学
电压
化学
物理
有机化学
地貌学
地质学
程序设计语言
工程类
作者
Wenbing Zhao,Diming Xu,Da Li,Maxim Avdeev,Hongmei Jing,Mengkang Xu,Yan Guo,Dier Shi,Tao Zhou,Wenfeng Liu,Dong Wang,Di Zhou
标识
DOI:10.1038/s41467-023-41494-1
摘要
Abstract The immense potential of lead-free dielectric capacitors in advanced electronic components and cutting-edge pulsed power systems has driven enormous investigations and evolutions heretofore. One of the significant challenges in lead-free dielectric ceramics for energy-storage applications is to optimize their comprehensive characteristics synergistically. Herein, guided by phase-field simulations along with rational composition-structure design, we conceive and fabricate lead-free Bi 0.5 Na 0.5 TiO 3 -Bi 0.5 K 0.5 TiO 3 -Sr(Sc 0.5 Nb 0.5 )O 3 ternary solid-solution ceramics to establish an equitable system considering energy-storage performance, working temperature performance, and structural evolution. A giant W rec of 9.22 J cm −3 and an ultra-high ƞ ~ 96.3% are realized in the BNKT-20SSN ceramic by the adopted repeated rolling processing method. The state-of-the-art temperature ( W rec ≈ 8.46 ± 0.35 J cm −3 , ƞ ≈ 96.4 ± 1.4%, 25–160 °C) and frequency stability performances at 500 kV cm −1 are simultaneously achieved. This work demonstrates remarkable advances in the overall energy storage performance of lead-free bulk ceramics and inspires further attempts to achieve high-temperature energy storage properties.
科研通智能强力驱动
Strongly Powered by AbleSci AI