نتایج جستجو برای: anodes
تعداد نتایج: 3800 فیلتر نتایج به سال:
Due to its high theoretical capacity, silicon is the most promising anode candidate for future lithium-ion batteries with energy density and large power. Yet low conductivity poor structural stability resulting from huge volume expansion after full lithiation are still critical issues impacting practical applications of anodes. This review unveils how designs address these challenges outlines e...
By anodizing of titanium and then electroplating of Platinum on surface anodized titanium, electrodes with high effective surface catalytic were made. Consideration of surface morphology using scanning electron microscope (SEM) shows that, with anodizing, micro porous layer on titanium surface was prepared. The electro catalytic behavior of this type of electrodes in the isopropanol electro oxi...
This mini review summarizes the recent advances that have been conducted toward electrochemical degradation of organic pollutants in aquatic solution on diamond anodes. In particular, first section focuses generation mechanisms reactive species comprising hydroxyl radicals (•OH), sulfate (SO4·−, S2O82−), and active chlorine (Cl2, ClO− etc.) Meanwhile, second is devoted to produce novel efficien...
Stacked porous octahedral tin phosphate Sn(2)P(2)O(7) nanodisks, with a thickness and a width of 20 nm and 200 nm, respectively, were prepared from quenching hydrothermally prepared (SnHPO(4))(2).H(2)O at 600 degrees C. The first discharge capacity was 600 mA h g(-1) while the capacity retention, even after 220 cycles, was 93%.
Anodes for solid oxide fuel cells (SOFCs) have been prepared by electrodeposition of either Co or Ni into a layer of porous yttria-stabilized zirconia (YSZ), 60 μm thick. The YSZ, having 65% porosity, was prepared by tape casting with graphite pore formers and was attached to the dense YSZ electrolyte. After adding 10 vol % CeO2 by impregnation of aqueous solutions of CeNO3)3, followed by calci...
Next-generation high-energy-density batteries require ideally stable metal anodes, for which smooth deposits during battery recharging are considered a sign of interfacial stability that can ensure high efficiency and long cycle life. With the recent successes, whether absolute morphological guarantees electrochemical safety emerges as critical question to be investigated in systematic experime...
The aim of this study was to synthesize N, P codoped CQDs modifying TiO2/g-C3N4 nanorod array (i.e., P-CQD/TCN NA) photoanodes for the degradation 1,4-dioxane (1,4-D) and explore possibility photoelectrocatalytic (PEC) process in wastewater treatment. With characterization NA anodes, 1,4-D pesticide tested PEC cell, respectively. Under a bias voltage 1.2 V visible light, current density NAs muc...
We report direct visualization of electrochemical lithiation and delithiation of Au anodes in a commercial LiPF6/EC/DEC electrolyte for lithium ion batteries using transmission electron microscopy (TEM). The inhomogeneous lithiation, lithium metal dendritic growth, electrolyte decomposition, and solid-electrolyte interface (SEI) formation are observed in situ. These results shed lights on strat...
Sulfur-rich lithium polysulfidophosphates (LPSPs) act as an enabler for long-lasting and efficient lithium-sulfur batteries. LPSPs have ionic conductivities of 3.0×10(-5) S cm(-1) at 25 °C, which is 8 orders of magnitude higher than that of Li2S. The high lithium ion conductivity imparts excellent cycling performance, and the batteries are configured in an all-solid state, which promises safe ...
für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namen...
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