A high recoverable energy storage density W-rec of 2.47 J/cm(3) and a large energy efficiency eta of 94.4% are simultaneously achieved in the composition of BT-12BZZ, which presents typical weakly coupled relaxor ferroelectric characteristics, with an activation energy E-a of 0.21 eV and a ...
Energy density calculations were performed using charge鈥揹ischarge curves which revealed that increasing Ni/Cr ratio at the Fe site enhanced the energy storage capability. Dielectric study revealed that real part of dielectric constant decreased and concentration-dependent variation remained consistent with...
Simultaneously enhanced of energy storage and energy harvesting performances of [(Bi 0.5 Na 0.5 )TiO 3 –BaTiO 3 ] ceramics by addition of SrTiO 3 As is well known, relaxor dielectrics are characterized by high energy storage efficiency ( η ), while high recoverable energy storage density (W...
6. An article as claimed in claim 5, wherein the layer thicknesses, the thermal conductivities, latent heats of fusion, density, specific heats and recovery temperatures of the materials of the layers, and the heat transfer coefficients at the interfaces between each of the layers, and between...
The main technical problems that have been associated with thermal techniques are (1) poor sweep efficiency, (2) loss of heat energy to unproductive zones underground, and (3) poor injectivity of steam or air. The poor sweep efficiency is due to the density differences between the injected flu...
Several of the cross-linked samples of example I were heat aged at temperatures of 175° and 200° C. to determine the effect of cross-linked density on the heat aging properties. The results of these tests are tabulated in table 2. ##SPC6## ...
With the decreasing feature size of integrated circuits and the increasing density of devices, the probability of double nodes being affected by single-event charge collection has increased, which may cause single-event double-node upset (SEDNU) [16,17]. In recent years, the latch structure of...
Hybrid Microdrive System with Recoverable Opto-Silicon Probe and Tetrode for Dual-Site High Density Recording in Freely Moving Mice. J. Vis. Exp. (150), e60028, doi:10.3791/60028 (2019). Download Citation Reprints and Permissions JoVE Privacy ...
twodamage variablesηm, ηfprovide the number density of matter that have been damaged and cannot be rearranged. Adissipation energy functionΦ(t) is linked to the internal variables by thermodynamically consistent evolution equations, describing the irreversible energy dissipation in the tensile cycle...
energy storageBi(Mg0.5Hf0.5)O3dielectric propertiesEnhancing the availability and reliability of dielectric ceramic energy storage devices is of great importance. In this work, (1-x)Na0.5Bi0.5TiO3–xBi(Mg0.5Hf0.5)O3(NBT–xBMH) lead-free ceramics were created utilizing a solid-state reaction ...