Browsing by Author "Frech, Roger,"
Now showing items 1-6 of 6
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Characterization of crystalline and amorphous phases in poly(N-methylethylenimine) polymer electrolytes and model systems.
Sanders, Rebecca Anne. (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, ... -
Characterization of pure and phase-stabilized sodium phosphate.
Cole, Renee Susan. (1998)This work illustrates the necessity of using a variety of techniques when characterizing these systems, which undergo complex structural changes that cannot be completely characterized using a single technique. The XRD ... -
Crystalline and amorphous phases in polymer electrolytes and model systems.
Rhodes, Christopher Peter. (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 ... -
Electrode materials for lithium rechargeable batteries: Synthesis, spectroscopic studies and electrochemical performance.
Zhang, Xulong. (1997)Three distinct $\rm Li\sb{x}V\sb2O\sb5$ phases, $\delta, \ \varepsilon, $ and $\gamma$-$\rm Li\sb{x}V\sb2O\sb5, $ were obtained through a chemical intercalation reaction and solid state reactions. Infrared and Raman spectra ... -
Local structures and conductivity in polyethylenimine and polyphosphazene polymer electrolytes.
York, Shawna Raye Starkey. (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 ... -
Vibrational spectroscopy of phosphate-based electrodes for lithium rechargeable batteries.
Burba, Christopher M. (2006)The favorable energy densities and cycling performances attainable from lithium rechargeable batteries has prompted aggressive research in this field for over 30 years. In particular, phosphate-based electrodes receive ...