We demonstrate the superior performance of SPEEK membrane in AZIFB single cells and kW-scale cell stacks, showing high energy efficiency and high cycling …
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The evaporation rate and the corresponding photothermal conversion efficiency of the FMXM2 evaporator were 1.54 kg m −2 h −1 and 87.1 %, respectively, which were higher than those of the MXM evaporator (0.87 kg m …
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In this paper, the performance of PEMEC combined with HOCC energy storage system is studied to obtain the basic variation rule of system performance. The simulation results of the system under rated operating conditions are shown in Table 3.The parameters in Table 3 visualize the power scale, energy efficiency performance, and …
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CO2 electroreduction is an alluring technology for high-value CO2 utilization and intermittent electrical energy storage. Self-supporting catalysts with high efficiency have clear advantages over powder ones in electrode construction but still lack effective synthesis methods. In this work, a self-supporting BiCu/carbon hybrid nanofiber …
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Conventional separation methods like distillation and crystallization have long been recognized for their high energy consumption and adverse environmental impacts. In …
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The immiscibility between the CCl 4 or mineral spirit and NaCl electrolyte enables a membrane-free design with an energy efficiency of >91% at 10 mA/cm 2 and an energy density of 125.7 Wh/L. The ...
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Proton exchange membrane (PEM) electrolysis is industrially important as a green source of high-purity hydrogen, for chemical applications as well as energy storage. Energy capture as hydrogen via water electrolysis has been gaining tremendous interest in Europe and other parts of the world because of the higher renewable …
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An RFB based on sPIM-SBF-1.40 membrane maintains high energy efficiency and a very low capacity decay rate of 0.0335% per day (0.0000795% per …
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Polymer 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 …
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In the future energy mix, electrochemical energy systems will play a key role in energy sustainability; energy conversion, conservation and storage; pollution control/monitoring; and greenhouse gas reduction. In general such systems offer high efficiencies, are modular in construction, and produce low chemical and noise pollution.
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The current study contributes to the design of advanced membranes for efficient VRB toward large-scale energy storage applications. Experimental Section Poly(ether ether ketone) (Victrex, PEEK 450 PF), Dimethylsulfoxide (DMSO) and sulfuric acid (98 wt.%) were purchased from Sinopharm Chemical Reagent Co. Ltd.
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We have achieved a strikingly high energy density, being five times higher than that of VRB, when the cell used LiFePO 4 and TiO 2 as the cathodic and …
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The limitations of ion-selective membranes, such as their high membrane resistance and low mass-transport efficiency, result in a power density (<2.2 W m −2) that is economically unviable 12.
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Doping Fe ions into the NiMo-NH 3 /H 2 catalyst yields an Fe-NiMo-NH 3 /H 2 catalyst, which is highly active for the OER, delivering 500 mA cm −2 at an overpotential of 244 mV. These catalysts are integrated into an AEM electrolyzer, which delivers 1.0 A cm −2 at 1.57 V at 80 °C in 1 m KOH.
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To obtain safe, stable, and high-efficiency usage of green energy sources, it is vital to develop more cutting-edge energy-related purification, storage, and conversion technologies. Membrane separation techniques exhibit unique advantages for obtaining a high purity of H 2 and biofuel because they have lower energy consumption, are …
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However, the effect of AgNPs on the thermal transfer efficiency of the composite fibers during the thermal energy storage and release stages varied significantly. The thermal energy storage and release times of the composite fibers were determined by measuring the time required to increase the temperature from 40 to 50 °C during heating …
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Although traditional water electrolysis has been commercialized for more than 100 years, its further application is limited by the low energy efficiency and high explosion risk [5]. To meet the next-generation requirements of hydrogen production, advanced water electrolysis technologies that exhibit high energy efficiency, compact …
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The high energy efficiency of membrane operations, mostly due to the fact that they do not require a phase change, is however often considered as one of their most attractive characteristics [5]. Advanced membrane materials properties and optimized process designs are expected to offer outstanding opportunities for energy efficient …
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In addition, in flow battery applications, these membranes showed superior power density and energy efficiency, enabling rapid charge and discharge cycles at a high current density of 400 mA cm-2.
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Osmotic energy stored between seawater and freshwater is a clean and renewable energy source. However, developing high-efficiency and durable permselective membranes for harvesting osmotic energy remains a longstanding bottleneck. Herein, we report that a nanocomposite membrane with a biological serosa-mimetic structure can …
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Large-scale electrical energy storage (EES) systems are vital for the efficient utilization of widely available intermittent renewable energy sources such as …
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Metal–organic frameworks (MOFs) are attractive in many fields due to their unique advantages. However, the practical applications of single MOF materials are limited. In recent years, a large number of MOF-based composites have been investigated to overcome the defects of single MOF materials to broaden the avenues for the practical …
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Results and Discussion Design Principle and Characterization First, we take advantage of the size difference between redox species and charge carriers to achieve high ionic conductivity and high selectivity. As schematically illustrated in Figure 1 A, small ions (cations such as H +, Li +, Na +, and K + or anions such as Cl −, OH −, and SO 4 …
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Thermo and light-responsive phase change nanofibers with high energy storage efficiency for energy storage and thermally regulated on–off drug release devices Chem. Eng. J., 375 ( 2019 ), p. 121979, 10.1016/j.cej.2019.121979
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An efficient method to improve energy conversion is to align ionic transport along the membrane thickness to address low ionic conductivity in traditional membranes used for energy harvesting. We fabricated a free-standing covalent organic framework membrane (TpPa-SO 3 H) with excellent stability and mechanical properties.
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e Relationship among the thickness of membrane, concentration of hydrogen in oxygen, and efficiency of electrolysis at the cathode pressure of (a) 1 bar, (b) 90 bar, and (c) 200 bar. …
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Yao, N. et al. Intermolecular energy gap-induced formation of high-valent cobalt species in CoOOH surface layer on cobalt sulfides for efficient water oxidation. Angew Chem. Int. Ed. 61 ...
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Abstract. We report advances on a novel membrane-based iron-chloride redox flow rechargeable battery that is based on inexpensive, earth-abundant, and eco-friendly materials. The development and large-scale commercialization of such an iron-chloride flow battery technology has been hindered hitherto by low charging efficiency …
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Graphene-based membranes have been explored in different energy and environmental applications. The 2D nanochannel structure and low frictional water flow …
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A hydrophobic membrane with nanopores for highly efficient energy storage. ScienceDaily . Retrieved April 9, 2024 from / releases / 2016 / 07 / 160722093245.htm
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In this work, a self-supporting BiCu/carbon hybrid nanofiber membrane (BiCu/CHNM) was synthesized by electrospinning-calcination and employed directly as a …
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