Browsing Chemistry by Title
Now showing items 150-169 of 234
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Quantitative Measurement of Compositional Inhomogeneity in NMC Cathodes by X-ray Diffraction Postprint
(IOPscience, 2023-08-14)A novel X-ray diffraction (XRD) analysis technique is described for quantitatively measuring compositional inhomogeneity in Li[NixMnyCoz]O2 (NMC) cathode materials and NMC precursors. Single-phase rock salt precursors with ... -
Rapid mechanochemical synthesis of amorphous alloys
(AIP Publishing, 2017-03-24)A rapid method for preparing amorphous alloys has been developed utilizing a SPEX high energy ball mill. Parameters such as ball size, mass of balls and milling time, were systematically optimized to prepare amorphous ... -
Reevaluating the Stability and Prevalence of Conglomerates: Implications for Preferential Crystallization
(American Chemical Society, 2016) -
Regioselective Substituent Effects upon the Synthesis of Dipyrrins from 2-Formyl Pyrroles
(Canadian Journal of Chemistry, 2018)The synthesis of symmetric α-free meso-H-dipyrrin hydrobromides from 5-H-2-formyl pyrroles was investigated. The self-condensation produces regioisomeric dipyrrins through the adoption of two mechanistic pathways. The key ... -
Relating 139La Quadrupolar Coupling Constants to Polyhedral Distortion in Crystalline Structures
(American Chemical Society, 2015-10-26)A broad series of crystalline lanthanum oxide-based materials has been investigated through high-field 139La solid state nuclear magnetic resonance (ssNMR) spectroscopy and ab initio density functional theory (DFT) ... -
Reversible lithium insertion in catalytically graphitized sugar carbon
(Elsevier, 2015-09-25)Highlights • First report of Li insertion in highly ordered catalytically derived graphite. • Fe catalyst combined with hard carbon precursors enable 1200 °C graphitization. • First report of highly ordered graphite ... -
The Reversible Magnesiation of Pb (Preprint)
(Elsevier Ltd, 2015-03-04)Sputtered Pb films have been found to reversibly alloy electrochemically with magnesium in Grignard based electrolytes. The voltage curve shows a single plateau at about 125 mV vs. Mg, corresponding to the formation of ... -
Robust Synthesis of F-BODIPYs
(Royal Society of Chemistry, 2016)F-BODIPYs are widely used in applications that rely upon their highly tunable optical properties. A protocol is established for the high-yielding synthesis of F-BODIPYs involving non-anhydrous reagents and not requiring ... -
Self-assembly of novel trimers using dipyrromethene ligands
(1999-04)Ligands comprising two dipyrromethene units linked at the beta-position have been used to prepare trimeric complexes with Zn-II and Co-II; the structure of the Zn-II complex is confirmed by X-ray analysis. -
A series of potent BODIPY photosensitisers featuring tellurophene motifs at boron† (Postprint)
(Royal Society of Chemistry, 2024-05-08)This article describes the synthesis and photophysical properties of a series of BODIPY photosensitisers that feature tellurophene motifs appended at the boron centre. These compounds were obtained via nucleophilic ... -
Si85Fe15Ox Alloy Anode Materials with High Thermal Stability for Lithium Ion Batteries
(The Electrochemical Society, 2021-11-11)The synthesis, microstructure and electrochemical properties of ball milled Si85Fe15Ox alloys with different oxygen contents are investigated. These materials combine the features of Si-M alloys (low irreversible capacity) ... -
Sintered polymeric binders for Li-ion battery alloy anodes
(www.nrcresearchpress.com/cjc, 2018-11-28)The cycling performance in lithium half cells of Si alloy electrodes with polyvinylidene fluoride or polyimide binders were evaluated after the electrodes were cured at temperatures below and above the binder carbonization ... -
Sodium distribution in sodium tellurite glasses probed with spin-echo NMR
(1997-09)We present results on the spatial distribution of sodium cations in sodium tellurite glasses as a function of sodium oxide content, obtained using a spin-echo NMR experiment. Glasses were studied with sodium oxide content ... -
Soft x-ray excited optical luminescence: Some recent applications
(2002-03)No abstract available. -
Soft x-ray-excited luminescence and optical x-ray absorption fine structures of tris (8-hydroxyquinoline) aluminum
(2001-03)No abstract available. -
Spherically Smooth Cathode Particles by Mechanofusion Processing
(The Electrochemical Society, 2019-08-27)Surface modification has been shown to be useful for improving the cycling performance of cathode materials. Typically hetero-compositional coatings are applied on cathode particle surfaces using methods, such as aqueous ... -
Spin waves and quantum criticality in the frustrated XY pyrochlore antiferromagnet Er2Ti2O7
(2008-10)We report detailed measurements of the low temperature magnetic phase diagram of Er2Ti2O7. Heat capacity and time- of- flight neutron scattering studies of single crystals reveal unconventional low- energy states. Er3+ ... -
Stabilizing NaCrO2 by Sodium Site Doping with Calcium
(The Electrochemical Society, 2019-06-14)Layered cathode materials based on abundant, low cost raw materials have garnered interest in recent years. O3-type NaCrO2 is a promising cathode material as it offers decent energy density and is easy to synthesize. In ... -
Step-wise synthetic approach is necessary to access g-conjugates of folate: folate-conjugated prodigiosenes
(2019)Despite the vast literature that describes reacting folic acid with a pharmacophore, this route is ineffective in providing the correct regioisomer of the resulting conjugate. We herein present a step-wise route to the ...