Meijing energy storage ge yan

How can a high energy storage density be achieved simultaneously?

Finally, high energy storage density (W = 6.39 J/cm 3, Wrec = 3.42 J/cm 3) together with high optical transmittance (∼72% at 900 nm) can be achieved simultaneously in 0.25Er-Sr 1 Ba 0.5 due to the exist of dense structure, ultrafine grain size (<100 nm), small-sized nano-microdomains (i.e., PNRs, < 50 nm) and large bandgap energy (∼3.10 eV).

Who are the authors of ferroelectric energy storage?

F. Yan, C. Shi and Q. W. Zhang: ferroelectric energy storage. J. F. Lin, J. W. Zhai and X. Wu: Discussion & Writing & Revision. All authors have given approval to the final version of the manuscript.

What is the energy storage density of MLCC?

The energy storage density reaches 7.8 J cm −3, 77 % higher than the MLCCs fabricated by traditional one-step sintering method. Moreover, the energy storage density changes by less than 10 % in a wide temperature range of 10 ∼ 180 °C.

Can defect engineering improve the grain size of energy storage ceramics?

A novel defect engineering is proposed to significantly refine the grain size of energy storage ceramics. Achieving simultaneously high energy storage density, a rapid discharge time and superior transparency. In-depth explanations are supported by the DFT calculations and the finite element analysis.

How efficient is KNN based storage ceramics?

At present, the Wrec of the opaque KNN-based storage ceramics has broken through 8 J/cm 3. However, its efficiency is usually difficult to reach an ideal state (i.e., <90%) since the high external electric field would inevitably increase hysteresis , .

What makes a good energy storage device?

Numerous studies have shown that, an ideal energy storage device with high recoverable energy density (Wrec) and energy storage efficiency (η) should simultaneously possess a high breakdown electric field (Eb) and large polarization difference (Δ P = Pmax − Pr) .