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Local structures and conductivity in polyethylenimine and polyphosphazene polymer electrolytes.
(2002)
Linear polyethylenimine (LPEI) is structurally analogous to poly(ethylene oxide), with an N-H group in place of the ether oxygen. LPEI systems with dissolved lithium and sodium triflate were prepared and characterized via ...
Polyamine-based polymer electrolyte modification and performance.
(2005)
Finally, lithium secondary batteries that function at room temperature were built using LPAG2EI based SPE and recycled at different temperatures and drain rates for preliminary evaluation. Although the recycling results ...
Hyrdrogen [sic] bonding interactions and cation coordination effects in nitrogen-based polymer electrolytes and model systems /
(2006)
Studies of the model-salt solutions were considerably aided by the formation of crystalline compounds whose structures were solved by single crystal x-ray diffraction methods. The frequency shifts observed in the NH ...
Synthesis and spectroscopic studies of polymer electrolyte hosts: Linear poly(ethylenimine), linear poly(N-methylethylenimine) and linear poly(N-2-(2-methoxyethoxy)ethylethylenimine).
(2002)
Three topics that are of interest to scientists in polymer electrolytes are: (1) ion-ion interactions; (2) ion-polymer interactions; and (3) how these interactions correlate to ionic conductivity. A spectroscopic study of ...
Characterization of crystalline and amorphous phases in poly(N-methylethylenimine) polymer electrolytes and model systems.
(2003)
LPEI is analogous to PEO, except LPEI has a heteroatom that is synthetically versatile because different side groups can be readily attached. LPEI:salt systems are not well understood as polymer electrolytes. Therefore, ...
Crystalline and amorphous phases in polymer electrolytes and model systems.
(2001)
A symmetry-based vibrational analysis is used to interpret bands in crystalline polymer-salt compounds. Vibrational spectroscopic data of crystalline polymer:salt complexes reveal the presence of dynamic coupling of the ...
Studies of molecular architecture within solid polymer electrolytes and teichoic acid biopolymers from solid-state nuclear magnetic resonance spectroscopy.
(2007)
The unsuccessful collection of a 31P CP-MAS spectrum in frozen D2O suggests the presence of liquid water around LTA. 2H SSNMR were used to study the phase of the water environments for LTA dissolved in D2O at -25 and ...
Computational studies of polymer electrolyte complexes by molecular dynamics and molecular vibrations by principal component analysis.
(2003)
The second part (Chapter 4 and 5) focuses on computing vibrational frequencies and modes by using a new technique, principal component analysis (PCA) which is broadly used in signal processing, pattern recognition, and ...