Prediction of optimal structural water concentration for …
Crystal water has been shown to stabilize next-generation energy storage electrodes with structural tunnels to accommodate cation intercalation, but the stabilization mechanism is poorly understood. In this study, we …
Buildings | Free Full-Text | Special Issue on Tunnel Construction …
For this Special Issue, ten highly innovative and practical articles about tunnel construction and underground space technology were selected. The topics of these articles include structural design, surrounding rock stability, and operation security during the process of engineering project evaluation, building, and operation and maintenance.
In-plane ferroelectric tunnel junctions based on 2D
Kang, L. et al. Domain-wall induced giant tunneling electroresistance effect in two-dimensional graphene/In 2 Se 3 ferroelectric tunnel junctions. Phys. E Low. Dimens. Syst. Nanostruct. 133 ...
Sub-nanosecond memristor based on ferroelectric tunnel junction
Memristor devices based on ferroelectric tunnel junctions are promising, but suffer from quite slow switching times. Here, the authors report on ultrafast switching times at and above room ...
Energy storage potential analysis of phase change material (PCM) energy storage units based on tunnel …
A novel cold energy storage method of PCM plates based on tunnel lining GHEs was proposed by our research team [16], which contributes to the geothermal energy utilization and energy storage. PCM plates filled with the cold energy can serve the cooling requirements of high geo-temperature tunnels and other underground spaces.
Effects of crystal structure and electronic properties on lithium …
In this report, a series of graphite with different crystal structure were synthesized and used for anodes of LIBs. Meanwhile, a concise method is designed to …
[PDF] Tunnel‐dependent supercapacitance of MnO2: effects of crystal …
Tunnel‐dependent supercapacitance of MnO2: effects of crystal structure. A proportional relationship between the specific capacitance of MnO2 and the percentage of effective Mn centers that act as active sites in the Faradaic charge storage has been established on the basis of a tunnel structure–crystallization behavior correlation. A ...
Effect of annealing atmosphere on the energy storage …
We achieved an energy storage density of 2.32 J/cm $$^{3}$$ and an energy storage efficiency of 47.8% under the electric field of 165 kV/cm. Our findings …
The thermal energy storage potential of underground tunnels …
Storage efficiencies of up to about 70% characterize energy tunnels. •. Performance mostly varies for different charging-discharging profiles and temperature …
Advances and perspectives of ZIFs-based materials for electrochemical energy storage: Design of synthesis and crystal …
Solar energy, wind energy, and tidal energy are clean, efficient, and renewable energy sources that are ideal for replacing traditional fossil fuels. However, the intermittent nature of these energy sources makes it possible to develop and utilize them more effectively only by developing high-performance electrochemical energy storage …
Effect of manganese oxide crystal tunnel size on Li-ion and Na …
The relationship between the volume available within the crystal structure of a material and the size of charge-carrying ions is investigated by evaluating the …
Polymers | Free Full-Text | Improved Energy Storage Performance …
The development and integration of high-performance electronic devices are critical in advancing energy storage with dielectric capacitors. Poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) (PVTC), as an energy storage polymer, exhibits high-intensity polarization in low electric strength fields. However, a hysteresis effect can …
Thermal energy storage with tunnels in different subsurface …
This study aimed to identify impacts of changes in subsurface environments on the thermal energy storage performance of un-derground tunnels used as heat exchangers. The …
A review of technologies and applications on versatile energy …
Energy storage system (ESS) is playing a vital role in power system operations for smoothing the intermittency of renewable energy generation and …
Adjusting the energy gap and interface effect of titania nanosheets synergistically enhances the energy storage performance …
Polymeric dielectric materials have recently attracted much attention due to their very high potential for use as advanced energy storage capacitors. However, it is still challenging to improve the inherent low energy densities of polymer dielectrics. Herein, we demonstrate a facile and highly efficient appr
Constructing layered/tunnel interlocking oxide cathodes for …
As schematically illustrated in Figure 1 a, the Mn-based tunnel oxide Na 0.44 MnO 2 (NMO) consists of MnO 6 octahedra and MnO 5 square pyramidal in the crystal structure, with 0.44 Mn in the 3+ valence state and 0.56 Mn in the 4+ valence state, …
The effect of Hf doping on the dielectric and energy storage performance …
In this paper, to improve the energy storage performance of titanated-based glass ceramics, hafnium dioxide was introduced into BaO–TiO 2 –SiO 2 –Al 2 O 3 –B 2 O 3 glass ceramics as modifier. And the dielectric performance, crystallization, microstructure, energy storage properties of (1-x) (BaO–TiO 2 –SiO 2 –Al 2 O 3 –B 2 O …
Effects of annealing temperatures on energy storage performance …
Effects of annealing temperatures on the microstructure, dielectric and energy storage performance of the films were investigated. The results indicate that BSZT thin films annealed at 600 °C for 30 min demonstrate the highest recoverable energy density and efficiency (50.5 J/cm 3 and 91.9%).
Understanding the influence of crystal packing density on …
Comparative PF analyses of different materials, including polymorphs, isomorphs, and others, are performed to clarify the influence of crystal packing density …
