Materials Literature
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The Li-air system is a novel battery technology which promises higher specific energy than Li-ion batteries. In this battery the cathode reaction is not the formation of an intercalation compound but the reduction of oxygen gas in the presence of Li+ ions forming lithium peroxide Li2O2 (or LiOH in the aqueous version)…
Inhibiting action of compositions on base of the technological mixture of the polyaminoamides and polyaminoimidazolines dissolved in the specific organic protonic solvent (IC-1) and aprotonic one (IC-2) has been studied against steel corrosion and hydrogen diffusion through the steel membrane. Investigations were cond…
Wearable devices have drawn a great attention with rising of a new era of innovation. For wearable devices, metal interconnects on flexible substrate are essentially required. In this point of view, printing technology is suitable for fabricating wearable devices. This method can also significantly support the trend o…
Surface plasmon resonance in metal nanostructures have been used to enhance the efficiency of semiconductors and/or molecular chromophore based solar energy conversion devices by increasing the absorption or energy transfer rate through the enhanced local field strength. In more recent years, it has been shown that ex…
The hybrid supercapacitors are electrochemical energy storage devices that combine the advantages of both Li-ion batteries and supercapacitors. The lithium ion capacitors (LICs), one of the hybrid capacitors under development, has a specific energy and energy density of around 30 Wh/kg and 20 Wh/L, respectively. These…
We present a coupling of synthesis and deposition procedures for large scale, high performance electrochemical energy storage electrodes. We will use inkjet deposited precursors to create oxides, hydroxides, sulfides, and phosphates from combinations of a range of homogeneous liquid precursors. A range of equilibrium…
We present transparent electrodes based on 3-dimensional nanohelix array for light harvesting applications. Arrays of nanohelixes fabricated by electron-beam oblique-angle deposition (OAD) of various metal oxides including TiO2, WO3 and ITO have been used for improving the performance of dye-sensitized solar cells (DS…
Supercapacitors prevail over batteries in certain niche markets, owing mainly to its much higher power density and the fit-and-forget benefits once installed. However, for certain applications, the power performance of supercapacitors may still not be sufficient. Herein, reduced graphene oxide is incorporated with act…
Introduction Recent research has resulted in significant improvements in the energy density and cycle life of Na batteries. For instance, FEC electrolyte additive has shown to be beneficial for cycling hard carbon and NaNi1/2Mn1/2O2electrodes [1]. However, Na-ion studies have almost exclusively employed Na half-cells,…
Salvia hispánica seeds extract has been investigated as a carbon Steel corrosion inhibitor in 0.5 M sulfuric acid by using polarization curves, electrochemical impedance spectroscopy, electrochemical noise and weight-loss, tests at different concentrations (0, 100, 200, 400, 600, 800 and 1000 ppm) and temperatures, na…
The current lithium-ion technology is based on insertion-compound cathodes and anodes. Layered and spinel oxides and olivine phosphates are the leading insertion-cathode hosts while graphite is the sole insertion-anode host at the present time. Each of the three cathode systems in play offers advantages and disadvanta…
The rechargeable magnesium ion battery is currently investigated in response to several challenges of lithium ion batteries,[1] such as cost, resource availability and safety issues related to risk of thermal runaway. The lithium ion batteries have and are predicted to dominate the portable battery market for a long t…
Among II–III–VI group ternary compounds, Cadmium indium selenide (CdIn2Se4) is one of the interesting semiconductors due to its optical absorption property, band gap and low electrical resistance. CdIn2Se4 is a direct band gap semiconductor with an energy gap of 1.73 eV which make them interesting for solar cells thro…
We successfully control luminescence of phosphors such as M2Si5N8:Eu (M = Ca, Sr, Ba) and Ca12Al14O32F2:Eu with lattice strain effects. we show that size-mismatch between host and dopant cations tunes photoluminescence shifts systematically in M1.95Eu0.05Si5−xAlxN8−xOx lattices, leading to a red shift when the M = Ba…
Energy usage in the United States is predicted to increase exponentially over the foreseeable future. However, data from the Energy Information Administration (EIA) indicates that 56-57% of all energy produced each year in the US is still rejected as waste heat. For example, a major portion of the energy generated by…
A fast solution by using the complex image theory is proposed for the modeling of the tool response in a layered medium. This method is developed based on the complex image theory introduced by Wait in 1969 and the derivation of the field distribution in dissipative media by Lien in 1953. This method is tested in both…
Silicon (Si) appears to be an attractive candidate for lithium-ion batteries because it delivers 10 times greater theoretical (∼4200 mAh/g) specific capacity than that of a traditional graphite anode (∼370 mAh/g). Conductive polymer binder poly(9,9-dioctylfluoreneco-fluorenone-co-methylbenzoic ester) (PFM), was applied…
INTRODUCTION The main applications of the SA213 and SA213-TP347H-T22 steels are in aggressive environments such as molten salts, the concentration of these along with the temperature increase generated in the corrosion rate [1-3]. METHODOLOGY The electrochemical cell used consists of a working electrode WE1, a referen…
Graphene and carbon nanotubes exhibit exceptional electrical and material properties. Full utilization of these properties in three dimensional nano-architectures towards envisioned applications necessitates that the integrity of the graphene layer during the CNT growth step is maintained. Recent efforts in fabricatin…
Magneto-electric composites constitute a promising class of materials for the application as highly sensitive magnetic field sensors. Their compatibility to miniaturization, their passive nature and their large dynamic range are just some of the numerous advantages of these composites compared to alternative magnetic…