Journal
JOURNAL OF PHYSICS D-APPLIED PHYSICS
Volume 54, Issue 29, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6463/abf860
Keywords
dielectric materials; energy storage; lead-free; Bi-based ceramics
Categories
Funding
- National Natural Science Foundation of China [51672092, U1732117, 51902111]
- China Postdoctoral Science Foundation [2019M662602]
- Natural Science Foundation of Guangxi [AA138162, GA245006, FA198015, AA294014]
- High-Level Innovation Team and Outstanding Scholar Program of Guangxi Institutes
- Open Fund of the Guangxi Key Laboratory of Information Materials [191015-K]
- Guangdong HUST Industrial Technology Research Institute
- Guangdong Provincial Key Laboratory of Digital Manufacturing Equipment [2020B1212060014]
- DongGuan Innovative Research Team Program [2020607101007]
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Dielectric energy-storage ceramics have high power density and fast charge and discharge rates, but are hindered by low energy density and lead content; therefore, research on lead-free dielectric energy-storage ceramics has become a hot topic. The composition design and energy storage characteristics of bismuth-based lead-free energy-storage ceramics are emphasized, along with the need to address challenges faced by these materials.
Dielectric energy-storage ceramics have the advantages of high power density and fast charge and discharge rates, and are considered to be excellent candidate materials for pulsed power-storage capacitors. At present, the application of dielectric energy-storage ceramics is hindered by their low energy density and the fact that most of them contain elemental lead. Therefore, lead-free dielectric energy-storage ceramics with high energy storage density have become a research hot spot. In this paper, we first present the requirements that dielectric energy-storage capacitors impose on the properties of ceramic materials. We then review our previous research work combined with research progress into bismuth (Bi)-based lead-free energy-storage ceramics including Bi0.5Na0.5TiO3 (BNT), BiFeO3, and Bi0.2Sr0.7TiO3, in which the composition design ideas and related energy-storage characteristics of BNT-based lead-free energy-storage ceramics are emphasized. At the same time, we highlight the problems faced by Bi-based lead-free energy-storage ceramics and some strategies for addressing them. Finally, we examine the future prospects of research into Bi-based lead-free energy-storage ceramics.
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