Theses and Dissertations

Date of Award

5-2017

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Chemistry

First Advisor

Dr. Tulay Atesin

Second Advisor

Dr. Mataz Alcoutlabi

Third Advisor

Dr. Javier Macossay-Torres

Abstract

LiFePO4/C composite nanofibers were prepared by utilizing Forcespinning® technology and calcination approaches. Polyacrylonitrile (PAN) was dissolved in N, N-dimethylformamide (DMF) to produce the media that allotted nanofiber formation via Forcespinning® and also served as the carbon source. A LiFePO4 solution was synthesized separately in DMF, which served as the precursor. The separately prepared PAN/DMF and LiFePO4/DMF solutions were then mixed at different weight percent’s (wt.%) prior to being subjected to Forcespinning ®. Elemental analysis of the LiFePO4/PAN nanofibers was characterized by energy dispersive spectroscopy (EDS) and x-ray photoelectron spectroscopy (XPS). The study of the surface morphology was conducted by scanning electron microscopy (SEM). Structural analysis of the LiFePO4/C composite nanofibers was studied utilizing x-ray diffraction (XRD). Lastly, the electrochemical analysis of the LiFePO4/C composite nanofibers was studied in coin type cells. As a result a methodology was standardized to successfully produce LiFePO4/C composite nanofibers via Forcespinning ®.

Comments

Copyright 2017 Ashlee L. Lopez. All Rights Reserved.

https://www.proquest.com/dissertations-theses/formation-lifepo-sub-4-pan-submicron-fibers-via/docview/1938728066/se-2?accountid=7119

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