First, there were increasing in stress and decreasing in the strain at anchor damage with rock bolts. For coal, the stress increased from 4.4 to 4.8 MPa and the strain reduced from 0.57% to 0.5%. For sandy mudstone, stress increased from 18 to 20.6 MPa and strain reduced from 0.6% to 0.49%.
Read MoreNa superionic conductor (NASICON)-type Na 4 MnCr(PO 4) 3 has attracted extensive attention among the phosphate sodium-storage cathodes due to its ultra-high energy density originating from three-electron reactions but it suffers from severe structural degradation upon repeated sodiation/desodiation processes. Herein, Mg is used for
Read MoreEnvironmentally friendly energy storage materials with high energy storage performance and excellent stability for applications in pulse power systems are
Read MoreHigh entropy can also be designed in non-perovskite ferroelectrics, such as the high-entropy ceramic (Ca 0.2 Sr 0.2 Ba 0.2 Pb 0.2 Nd 0.1 Na 0.1)Bi 4 Ti 4 O 15, which exhibits polar nanoregions and
Read MoreHigh-performance piezoceramics can also be used as actuators thanks to the inverse piezoelectric effect. However, a strain hysteresis as large as 10–20% is usually generated from partly
Read MoreThis results from significant lattice distortion and smaller grain size induced by the high-entropy effect. The synergistic effects of high-entropy design and the PRP
Read MoreA large field-induced strain value of 0.76%, a giant strain memory effect of 0.51%, and a good thermal stability of energy storage performance with the recoverable energy variation less than 5% in a wide temperature range were achieved in the (Pb,La)(Zr,Sn,Ti)O 3 tetragonal antiferroeletric single crystals grown by the conventional
Read MoreHere, in search of new polymer structures, we have explored the effect of fluorine groups on the energy-storage properties of polyoxanorbornene imide polymers with simultaneous wide band gap and high glass transition temperature (T g). The systematic synthesis of polymers with varying amounts of fluorine is carried out and characterized for the
Read MoreThe desirable effect of bound water on the energy-storage properties of physically dry cellulose nanofiber (Na-ACF) supercapacitors with sodium (Na)
Read MoreMost importantly, the film can maintain a high EC performance either under bending deformation at 5 mm radius or after undergoing 10 4 bending-unbending cycles. Meanwhile, the flexible NBBST film possesses good energy storage property with a recoverable energy density of 56 J cm-3 and an efficiency of 66%. This is the first
Read MoreRechargeable batteries are promising electrochemical energy storage devices, and the development of key component materials is important for their wide
Read MorePolymer dielectrics need to operate at high temperatures to meet the demand of electrostatic energy storage in modern electronic and electrical systems. The polymer nanocomposite approach, an extensively proved strategy for performance improvement, encounters a bottleneck of reduced energy density and poor discharge
Read MoreThe high-entropy effects on the crystal structure, microstructures, dielectric and electrical property of BNKLST thin films are systematically investigated,
Read MoreSpecifically, investigations into electrochemical energy storage, catalysis and HEAs have yielded insights into how to process, characterize and test HEMs for
Read MoreThe electrostrictive effect and energy storage performance of high Pr 3+ doping concentration (1.4–2 mol%) samples were studied. The origin of giant electrostrictive coefficient and excellent energy-storage performance in PIN-PMN-PT:Pr 3+ ceramics are discussed and the enhancement mechanism of Pr 3+ doping is proposed. 2.
Read MoreAn oxanorbornene copolymer with 25% fluorination exhibits a high breakdown strength of 700 MV/m and a discharged energy density of 6.3 J/cm 3 with 90% efficiency. The incorporation of fluorine helps to increase the polymer band gap, as observed using UV-vis spectroscopy, but lowers the polymer Tg, as shown by differential scanning
Read MoreIn recent years, lithium-ion batteries (LIBs) have become the major rechargeable power sources for electric vehicles (EVs) and portable electronic devices. 1–3 However, applications of LIBs are limited because currently they could not fulfill the requirement for high power output and reversible energy storage. 4,5 Therefore,
Read More1. Introduction. Large-scale energy storage technologies mitigate the intermittency of renewable energy sources and regulate grid systems'' safety, stability, and reliability while avoiding the environmental problems caused by fossil fuels [1], [2], [3].Lithium-ion batteries (LIBs) dominate the commercial market owing to their high
Read MoreBenefiting from the synergistic effects, we achieved a high energy density of 20.8 joules per cubic centimeter with an ultrahigh efficiency of 97.5% in the MLCCs. This approach should be universally applicable to designing high-performance dielectrics for
Read MoreHere we report record-high electrostatic energy storage density (ESD) and power density, to our knowledge, in HfO2–ZrO2-based thin film microcapacitors
Read MoreResearchers devise a method to store iontronic energy in a polymer film based on osmotic effects, achieving high energy and power density. Making salinity gradient energy practical is a great
Read MoreA high recoverable energy density W reco (7.29 J·cm −3), a satisfying energy storage efficiency η (73.18%), and a large strain (0.51%) are achieved
Read MoreDynamic characteristics and performance improvement of a high-efficiency double-effect thermal battery for cooling and heating. Appl. Energy (2020) Simulation results reveal that both the two working pairs exhibit high energy storage density (470.8 kWh/m 3 and 525.6 kWh/m 3) in the fully crystallized cycle, which is around 2.9–5 times
Read MoreAlthough dielectric energy-storage devices are frequently used in high voltage level, high voltage risk and large cost of insulation technology have increased the demand on the energy-storage devices at finite electric field strength.Here, we propose an approach on enhancing energy-storage density (W rec) of dielectric materials under low
Read MoreHere, we present the principles of energy storage performance in ceramic capacitors, including an introduction to electrostatic capacitors, key parameters for evaluating energy storage properties,
Read MoreAs the photovoltaic (PV) industry continues to evolve, advancements in high energy storage effect have become instrumental in optimizing the utilization of renewable energy sources. From innovative battery technologies to smart energy management systems, these solutions are transforming the way we store and distribute solar-generated electricity.
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