High energy storage density with ultra-high efficiency and fast charging-discharging capability of sodium bismuth niobate lead-free ceramics  

作　　者：Abdul Manan Maqbool Ur Rehman Atta Ullah Arbab Safeer Ahmad Yaseen Iqbal Ibrahim Qazi Murad Ali Khan Hidayat Ullah Shah Arshad Hussain Wazir 

机构地区：[1]Laboratory for Research in Advanced Materials,Department of Physics University of Science and Technology Bannu,Township Bannu 28100 Khyber Pakhtunkhwa,Pakistan [2]Center for Material Science,Islamia College Peshawar Peshawar,25120 Khyber Pakhtunkhwa,Pakistan [3]Materials Research Laboratory,Department of Physics University of Peshawar,25120 KP,Pakistan§Department of Materials Science and Engineering,Institute of Space Technology Islamabad,44000 Islamabad,Pakistan [4]Department of Chemistry,University of Science and Technology Bannu 28100 Khyber Pakhtunkhwa,Pakistan

出　　处：《Journal of Advanced Dielectrics》2021年第4期37-45,共9页先进电介质学报（英文）

基　　金：The Higher Education Commission(HEC)Islamabad Pakistan has financially supported this work through the National Research Program for University(7488/KPK/NRPU/R&D/HEC/2017);The financial support extended by HEC,Pakistan through Project No.NRPU-8148。

摘　　要：Ceramics-based capacitors with excellent energy storage characteristics,fast charging/discharge rate,and high efficiency have received significant attention.In this work,Na0.73Bi0.09NbO3(NBN)ceramics were processed through solid-state sintering route.The investigated ceramics were crystallized in a single perovskite phase.Dense microstructure,with small average grain size(~0.92 mm)is obtained for the investigated ceramics.A high dielectric constant>1000 accompanied by a low dielectric loss was achieved for these ceramics at ambient temperature.A recoverable energy density~0.92 J/cm3 and ultra-high efficiency of 96.33%at 138 kV/cm were obtained at room temperature.Furthermore,a lower discharging time of 0.14 ms was also achieved.This material is a suitable candidate for power pulsed applications.

关 键 词：Polarization energy density CAPACITOR EFFICIENCY 

分 类 号：TQ1[化学工程]