Results 141 to 150 of about 11,806 (306)

Keggin‐Type Aluminum Polyoxometalate‐Mediated Oxidation of Amorphous Carbon for Engineered Electrochemical Interfaces

open access: yesCarbon Energy, EarlyView.
Keggin‐type Al‐POM‐coated silica achieves selective surface oxidation of amorphous carbon through electrostatic attraction and proton‐coupled oxidation, tailoring interfacial properties for lithium‐ion batteries and semiconductor processes. ABSTRACT Amorphous carbon is widely used in energy storage and semiconductor technologies, where surface ...
Ganggyu Lee   +13 more
wiley   +1 more source

Vibration analysis of a variable length blade wind turbine

open access: yes, 2012
: In this paper, Flap-wise, edge-wise and torsional natural frequencies of a variable length blade have been identified. Therefore designers can ensure that natural frequencies will not be close to the frequency of the main excitation forces in order to ...
Kilfoil, M.   +5 more
core   +1 more source

Enhancement to Non-Contacting Stress Measurement of Blade Vibration Frequency

open access: yes, 2011
A system for turbo machinery blade vibration has been developed that combines time-of-arrival sensors for blade vibration amplitude measurement and radar sensors for vibration frequency and mode identification. The enabling technology for this continuous
Jagodnik, John, Platt, Michael
core  

Kirkendall‐Effect‐Mediated Hollow Bimetallic Hexacyanoferrates for Aqueous Zn‐Ion Batteries: Suppressing Jahn–Teller Distortions and Enhancing Ion Transport and Cyclability

open access: yesCarbon Energy, EarlyView.
Kirkendall‐engineered hollow Ni–Mn hexacyanoferrates feature Ni‐tunable shell thickness and uniform alloying, coupling architectural control with electronic stabilization. Composition–morphology co‐optimization suppresses Mn³⁺‐driven Jahn–Teller distortions and lowers charge‐transfer barriers, enabling rapid Zn²⁺ transport and reversible redox.
Jihong Kim   +12 more
wiley   +1 more source

Inorganic‐Directed Charge Delocalization Channels: Boosting Uniform Charge Distribution and Rapid Na+ Transport for Solid‐State Sodium Metal Batteries

open access: yesCarbon Energy, EarlyView.
This work develops a PM@PN composite solid electrolyte via inorganic‐induced organic molecular reconstruction. It constructs continuous interfacial ion superhighways, enables uniform Na+ deposition, and significantly enhances ionic conductivity and electrochemical stability for all‐solid‐state sodium metal batteries.
Jiaze Li   +11 more
wiley   +1 more source

Monitoring hydrodynamic bearings with acoustic emission and vibration analysis

open access: yes, 2012
Acoustic emission (AE) is one of many available technologies for condition health monitoring and diagnosis of rotating machines such as bearings. In recent years there have been many developments in the use of Acoustic Emission technology (AET) and ...
Mirhadizadeh, S. A.
core  

Deciphering Polarity Effects of Polymer to Regulate Li+ Ionic Environment in Solid Polymer Electrolytes for Solid‐State Lithium Batteries

open access: yesCarbon Energy, EarlyView.
We elucidate the fundamental influences of polymer polarity on Li+ ionic environments in solid polymer electrolytes by considering four critical components: Li+, FSI−, residual solvents, and polymer matrix. Beyond facilitating LiFSI dissociation and Li+ transport, our findings underscore previously overlooked roles of polymer polarity, thereby ...
Ji‐Oh Kim   +7 more
wiley   +1 more source

Ag‐Regulated Cu‐Sites on a Conductive Cu‐Metal‐Organic Framework for Enhanced CO2 Electroreduction to CH4

open access: yesEcoEnergy, EarlyView.
We present a strategy of integrating Ag NPs with a 2D Cu3(HHTP)2 framework to boost selective CO2 electroreduction. The optimal composite achieves 65.1% FECH4 ${\text{FE}}_{{\text{CH}}_{4}}$ at 240 mA cm−2. Synergistic effects enhance CO2 adsorption, facilitate electron transfer, and selectively stabilize key reaction intermediates, steering the ...
Fang‐Fang Wang   +3 more
wiley   +1 more source

Thermochromic Radiative Cooling Coatings with Robust Superhydrophobicity for Energy‐Efficient Buildings

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A scalable, color‐adaptive radiative cooling coating is developed to enable dynamic spectral regulation via a reversible thermochromic transition at ~45 °C and a high solar reflectance of 91.7%. The coating achieves 4.44 °C outdoor sub‐ambient cooling while providing robust superhydrophobicity and environmental durability through its micro/nano ...
Ziqi Li   +8 more
wiley   +1 more source

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