Ultrahigh Energy Storage in Tungsten Bronze Dielectric Ceramics Through a Weakly Coupled Relaxor Design
Yangfei Gao,
Wenjing Qiao,
Xiaojie Lou
et al.
Abstract:Dielectric energy‐storage capacitors, known for their ultrafast discharge time and high‐power density, find widespread applications in high‐power pulse devices. However, ceramics featuring a tetragonal tungsten bronze structure (TTBs) have received limited attention due to their lower energy‐storage capacity compared to perovskite counterparts. Herein, a TTBs relaxor ferroelectric ceramic based on the Gd0.03Ba0.47Sr0.485‐1.5xSmxNb2O6 composition, exhibiting an ultrahigh recoverable energy density of 9 J cm−3 a… Show more
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