AUTHOR=Zhang Lin , Wang Qian , Li Jie , Wang Chuanhui 

TITLE=The Role of ZnO as a Dopant and an Intergranular Phase in the Electrical Properties of Ca0.6Sr0.4TiO3 Ceramics

JOURNAL=Frontiers in Energy Research

VOLUME=Volume 9 - 2021

YEAR=2021

URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2021.807300

DOI=10.3389/fenrg.2021.807300

ISSN=2296-598X

ABSTRACT=ZnO were introduced into Ca0.6Sr0.4TiO3 ceramics as dopants and intergrangular phases in this research, respectively, followed by detailed structure characterization, energy storage performance analysis, and electrical behavior study. The results revealed that the existence of ZnO as dopants led to the decrease of conduction activation energy and the deterioration of energy storage behavior, while  appropriate introduction of ZnO as intergranular phases resulted in the increase of conduction activation energy and the optimization of energy storage performance. Additionally, the inverse relation between interfacial polarization and energy storage performance was observed in this work. Finally, increased energy storage densities of 1.16 J/cm3 were achieved in 1 mol% ZnO added Ca0.6Sr0.4TiO3 ceramics.