نتایج جستجو برای: tungsten oxide

تعداد نتایج: 186144  

Journal: :Journal of Crystal Growth 2005

Journal: :NanoNEXT 2022

The stable and efficient supercapacitor investigation synthesized tungsten-based oxides using many approaches. impact of the tungsten precursor on product was significant in this research, most important consequences are highlighted. Supercapacitors other energy storage devices have been tungstate metal oxide because its high electrical conductivity as well low manufacturing costs. This article...

Journal: :Nanoscale 2015
Xiaochuan Duan Songhua Xiao Lingling Wang Hui Huang Yuan Liu Qiuhong Li Taihong Wang

Hexagonal (h-WO3) mesocrystals with biconical morphology were prepared by a straightforward ionic liquid-assisted hydrothermal route and investigated as anodic materials for lithium-ion batteries. Compared to the alternatives, the biconical tungsten trioxide mesocrystal exhibited excellent lithium insertion with good cyclability and rate capability, making it a promising candidate as the anode ...

Journal: :Chest 1992
W Sahle

1310 Communications to the Editor cuff inflation is seldom seen, and an increase of 1 ml or less in cuff volume can markedly increase LW? What can be done to minimize the possibility of cuff-induced tracheal damage? First, select the largest endotracheal tube that can be inserted atraumatically. A greater cross-sectional area ratio between the tube and the trachea means less air must be injecte...

Journal: :Journal of the Japan Society of Powder and Powder Metallurgy 1995

Journal: :Journal of the Korean Society of Tribologists and Lubrication Engineers 2011

Journal: :Physical chemistry chemical physics : PCCP 2014
Anna Kubacka Ana Iglesias-Juez Marco di Michiel Ana Isabel Becerro Marcos Fernández-García

Composite TiO2-WO3 oxide materials were prepared by a single pot microemulsion method and studied during calcination treatments under dry air in order to analyze the influence of tungsten on the behavior of the dominant titania component. To this end, the surface and bulk morphological and structural evolution of the solid precursors was studied using X-ray diffraction and infrared spectroscopy...

2001
Jin-Ho Choy Young-Il Kim Sang-Hoon Choy

Temperature-dependent in situ W L3-edge X-ray absorption spectroscopy has been performed at 20–500 ‡C to investigate the geometric environment and electronic structure of tungsten upon the transformation of electrochromic peroxopolytungstic acid to tungsten trioxide. The temperature-dependent variation of the coordination number and bond distance of the nearest (W–O) sphere reveals that the per...

2016
Anna Staerz Udo Weimar Nicolae Barsan

Tungsten trioxide is the second most commonly used semiconducting metal oxide in gas sensors. Semiconducting metal oxide (SMOX)-based sensors are small, robust, inexpensive and sensitive, making them highly attractive for handheld portable medical diagnostic detectors. WO₃ is reported to show high sensor responses to several biomarkers found in breath, e.g., acetone, ammonia, carbon monoxide, h...

2009
Kenny Ståhl Rolf W. Berg

The title compound, Rb(8)[W(2)O(4)(SO(4))(6)], was precipitated from a melt of tungsten(VI) oxide and rubidium sulfate in rubidium disulfate. The unit cell contains two discrete [{W(VI)O(2)(SO(4))(2)}(2)(μ-SO(4))(2)](8-) units connected by Rb-O coord-ination. The W atom is octahedrally surrounded by two oxide ligands, two terminal sulfate ligands and two bridging sulfate groups. One Rb atom is ...

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