Grain size and energy storage

Does grain refinement improve energy storage performance?

Song et al. synthesized (Ba 0.4 Sr 0.6 )TiO 3 samples with different grain sizes (0.3–3.4 µm) and found that the grain refinement obviously improved the breakdown electric field so that the energy storage performance enhanced, but the breakdown strength deteriorated when the grain size was smaller than 0.7 µm [ 26 ].

Does grain size affect energy storage performance of bczt ceramics?

Although there have been some studies on the effects of grain size on the energy storage density of BaTiO 3 and Ba x Sr 1−x TiO 3 ceramics, little attention has been paid to the influences of grain size on the energy storage performances of BCZT ceramics.

What is grain size engineered 0.9knn-0.1bf?

Compared with other lead-free dielectric ceramics, grain size engineered 0.9KNN-0.1BF is the first high-performance ceramic material with both an exceptionally large Wrec and ultrahigh mechanical properties, which can accelerate the practical use of APPCs.

Does grain size affect EB and mechanical performance?

Previous research has confirmed that the grain size has a strong effect on the Eb and mechanical performance, namely, the Eb and mechanical performance of dielectric ceramics could be increased via decreasing grain size , , , , .

How does grain size affect mechanical strength?

For example, Yip et al. proved that the mechanical strength gradually increases with decreasing grain size by computer simulations . Furthermore, Wang et al. and Vashi et al. demonstrated from experiments that the σf and H gradually increase with the decrease of grain size, respectively , .

How to increase the energy storage density of polycrystalline ceramics?

Here, we propose a strategy to increase the breakdown electric field and thus enhance the energy storage density of polycrystalline ceramics by controlling grain orientation.