期刊
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
卷 105, 期 10, 页码 6158-6167出版社
WILEY
DOI: 10.1111/jace.18539
关键词
energy storage performance; lead-free dielectric capacitor; sodium-potassium-niobate; transparency
资金
- National Natural Science Foundation of China [52072150, 51972146]
- China Association for Science and Technology
- Open Fund Foundation of Guangdong Provincial Key Laboratory of Electronic Functional Materials and Devices [EFMD2021002Z]
This study successfully optimized the optical transmittance and energy storage characteristics of ceramics by modifying them with Bi(Li0.5Nb0.5)O-3 (BLN) known for its excellent optical transparency and energy storage properties. The newly synthesized 0.95KNN-0.05BLN ceramic exhibited excellent energy storage efficiency and transparency.
Transparent ceramic capacitors have broad application prospects in electronic devices due to their excellent optical transparency and energy storage properties. However, the low polarizability and high remnant polarization of the existing transparent dielectric ceramics limit the promotion of energy storage performance. Here, Bi(Li0.5Nb0.5)O-3 (BLN) was chosen to modify the (K0.5Na0.5)NbO3 (KNN)-based ceramics to optimize the optical transmittance and energy storage characteristics simultaneously. On the one hand, the grain growth is inhibited, contributing to the improved breakdown strength and transmittance. On the other hand, the doping BLN could reduce the polar nanoregions size, which makes them respond more quickly to the external electric field and, thus, improves the energy storage efficiency. As a consequence, 0.95KNN-0.05BLN ceramic possesses the excellent W-rec of 4.39 J/cm(3), eta of 81.4%, and transparency of 77.9% with an average grain size of similar to 109 nm. This work opens up a paradigm to develop a transparent pulse capacitor.
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