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Displaying 1101 - 1125 of 3718

Structural origins of enhanced capacity retention in novel copolymerized sulfur-based composite cathodes for high-energy density Li-S batteries

September 17, 2015
Author(s)
Vladimir P. Oleshko, Jenny J. Kim, Jennifer L. Schaefer, Steven D. Hudson, Christopher L. Soles, Adam Simmonds, Jared Griebel, Kookheon Char, Jeff Pyun
Poly(sulfur-random-(1,3-diisopropenylbenzene) (poly(S-r-DIB)) copolymers synthesized via inverse vulcanization form high molecular mass electrochemically active polymers capable of realizing enhanced capacity retention (1005 mAh/g at 100 cycles) and

SYNTHESIS AND PROPERTIES OF THERMOPLASTIC POLYURETHANES WITH ISOSORBIDE CHAIN EXTENDER

August 28, 2015
Author(s)
Fan Zhang, Ivan Javni, Olivera Bili?, Nikola Bili? , Zoran S. Petrovic, Jan Ilavsky
Isosorbide, a renewable diol derived from starch, was used in combination with butane diol or alone as the chain extender in two series of thermoplastic polyurethanes with 50 and 70% soft segment concentration (SSC). Polyurethanes with 50% SSC based on

Classification of Semiconducting Polymeric Mesophases to Optimize Device Post-Processing

August 17, 2015
Author(s)
Chad R. Snyder, Regis J. Kline, Dean M. DeLongchamp, Ryan C. Nieuwendaal, Lee J. Richter, Martin Heeney, Iain McCulloch
Semiconducting polymers form a variety of phases and mesophases that respond differently to post-deposition solvent or thermal treatments. Here it is shown that classification of these materials into their appropriate mesophases can be a useful tool to

In-Situ Method for Measuring the Mechanical Properties of Nafion Thin Films during Hydration Cycles

August 15, 2015
Author(s)
Kirt A. Page, Jae W. Shin, Scott Eastman, Brandon W. Rowe, Sangcheol Kim, Ahmet Kusoglu, Kevin G. Yager, Gery R. Stafford
Perfluorinated ionomers, in particular Nafion, are an essential component in hydrogen fuel cells, as both the proton exchange membrane and the binder within the catalyst layer. During normal operation of a hydrogen fuel cell the ionomer will progressively

Infrared Imaging and Spectroscopy Beyond the Diffraction Limit

July 22, 2015
Author(s)
Andrea Centrone
Progress in nanotechnology is enabled by and dependent on the availability of measurement methods with spatial resolution commensurate with nanomaterials’ length scales. Chemical imaging techniques, such as scattering scanning near-field optical microscopy

Aging of Polymeric Films used in Protective Glazing Systems

July 7, 2015
Author(s)
Christopher C. White, Donald L. Hunston, Kar T. Tan
The toughness of polymer and glass laminates or win-dow glazing, are used to protect buildings and occupants from shattered glass resulting from natural disasters (e.g., hurricanes, tornadoes, seismic events), and intentional events (e.g., robbery
Displaying 1101 - 1125 of 3718
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