NaNbO3‐Based Multilayer Ceramic Capacitors with Ultrahigh Energy Storage Performance

With the gradual promotion of new energy technologies, there is a growing demand for capacitors with high energy storage density, high operating temperature, high operating voltage, and good temperature stability. In recent years, researchers have been devoted to improving the energy storage propert...

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Bibliographic Details
Published in:Advanced energy materials 2024-03, Vol.14 (12), p.n/a
Main Authors: Lv, Zhongqian, Lu, Teng, Liu, Zhen, Hu, Tengfei, Hong, Zhichao, Guo, Shaobo, Xu, Zequan, Song, Yunxiong, Chen, Yonghong, Zhao, Xiangyong, Lin, Zhisheng, Yu, Dehong, Liu, Yun, Wang, Genshui
Format: Article
Language:English
Subjects:
Capacitors
Ceramics
Energy storage
Energy technology
Fatigue strength
lead‐free
multilayer ceramic capacitors
Multilayers
Operating temperature
Sodium compounds
sodium niobate
Stability
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Summary:With the gradual promotion of new energy technologies, there is a growing demand for capacitors with high energy storage density, high operating temperature, high operating voltage, and good temperature stability. In recent years, researchers have been devoted to improving the energy storage properties of lead‐based, titanium‐based, and iron‐based multilayer ceramic capacitors (MLCCs). However, limited research has been conducted into MLCC development using NaNbO3 (NN)‐based materials. In this paper, the successful achievement of excellent overall energy storage performance in a novel NaNbO3–(Bi0.5Na0.5)TiO3–Bi(Mg0.5Hf0.5)O3 lead‐free MLCCs is presented. The disordered tilting around the cp axis, disrupts Na and Bi ions' long‐range displacements and induces PNRs and strong relaxor behavior, which ensures a superior energy storage performance, together with the multilayer ceramic design strategy. As a result, the NN‐based MLCC device presents an ultra‐high Wrec = 12.65 J cm−3 and η = 88.5%, simultaneously showing superior temperature stability (Wrec varies
ISSN:1614-6832
1614-6840
DOI:10.1002/aenm.202304291