{"id":{"repo_id":"gsu","oai_identifier":"oai:digitalcommons.georgiasouthern.edu:etd-2298"},"canonical_url":"https://search.dev.ndltd.org/etd/gsu/oai:digitalcommons.georgiasouthern.edu:etd-2298","repository":{"repo_id":"gsu","name":"Georgia Southern University","base_url":"https://digitalcommons.georgiasouthern.edu/do/oai/"},"display":{"title":"Electrospun Titanium Dioxide and Silicon Composite Nanofibers for Advanced Lithium Ion Batteries","abstract":"<p>A unique electrospinning method was implemented to fabricate composite nanofibers for lithium ion battery applications. The composite nanofibers were made of amorphous carbon, rutile phase TiO<sub>2</sub>, and cubic phase Si nanoparticles. Sulfur was utilized as a template to form void structures within the TiO<sub>2</sub> nanofiber matrix. This provides the desired space for the Si expansion during the lithiation process. Phase, structure, composition, and morphology of the nanofibers were characterized using Raman spectroscopy, SEM, EDS, TGA, and powder XRD. Carbonized TiO<sub>2</sub> nanofibers showed a low but stable specific capacity. Si Nanoparticles demonstrated an initially high but fast degrading capacity. In contrast, silicon in SiNP/C/TiO<sub>2</sub> nanofibers with sulfur as a template exhibits an impressive high specific capacity of ~3459 mAh g<sup>-1</sup>initially, 54% of which can be maintained after 180 cycles.</p>","abstract_html":"&lt;p&gt;A unique electrospinning method was implemented to fabricate composite nanofibers for lithium ion battery applications. The composite nanofibers were made of amorphous carbon, rutile phase TiO&lt;sub&gt;2&lt;/sub&gt;, and cubic phase Si nanoparticles. Sulfur was utilized as a template to form void structures within the TiO&lt;sub&gt;2&lt;/sub&gt; nanofiber matrix. This provides the desired space for the Si expansion during the lithiation process. Phase, structure, composition, and morphology of the nanofibers were characterized using Raman spectroscopy, SEM, EDS, TGA, and powder XRD. Carbonized TiO&lt;sub&gt;2&lt;/sub&gt; nanofibers showed a low but stable specific capacity. Si Nanoparticles demonstrated an initially high but fast degrading capacity. In contrast, silicon in SiNP/C/TiO&lt;sub&gt;2&lt;/sub&gt; nanofibers with sulfur as a template exhibits an impressive high specific capacity of ~3459 mAh g&lt;sup&gt;-1&lt;/sup&gt;initially, 54% of which can be maintained after 180 cycles.&lt;/p&gt;","abstract_has_math":false,"creators":["McCormac, Kathleen"],"institution":null,"degree_name":"Master of Science in Applied Physical Science (M.S.)","degree_level":"Thesis (open access)","degree_discipline":"Department of Electrical Engineering","degree_department":null,"school":null,"contributors":["Rafael Quirino","John Stone"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-01-01T08:00:00Z","date_published":"2015-01-01T08:00:00Z","updated_at":"2026-07-24T02:28:22Z","subjects":["Lithium Ion Batteries","Titanium Dioxide","Silicon","Nanofiber","Materials Chemistry"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://digitalcommons.georgiasouthern.edu/etd/1228","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Rafael Quirino","John Stone"]},{"key":"dc:creator","label":"Author","values":["McCormac, Kathleen"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.available","label":"Dc Date Available","values":["2015-04-10T07:00:00Z"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Department of Electrical Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis (open access)"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science in Applied Physical Science (M.S.)"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Lithium Ion Batteries","Titanium Dioxide","Silicon","Nanofiber","Materials Chemistry"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://digitalcommons.georgiasouthern.edu/etd/1228"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["<p>A unique electrospinning method was implemented to fabricate composite nanofibers for lithium ion battery applications. The composite nanofibers were made of amorphous carbon, rutile phase TiO<sub>2</sub>, and cubic phase Si nanoparticles. Sulfur was utilized as a template to form void structures within the TiO<sub>2</sub> nanofiber matrix. This provides the desired space for the Si expansion during the lithiation process. Phase, structure, composition, and morphology of the nanofibers were characterized using Raman spectroscopy, SEM, EDS, TGA, and powder XRD. Carbonized TiO<sub>2</sub> nanofibers showed a low but stable specific capacity. Si Nanoparticles demonstrated an initially high but fast degrading capacity. In contrast, silicon in SiNP/C/TiO<sub>2</sub> nanofibers with sulfur as a template exhibits an impressive high specific capacity of ~3459 mAh g<sup>-1</sup>initially, 54% of which can be maintained after 180 cycles.</p>"]},{"key":"dc:source","label":"Dc Source","values":["McCormac, K., et al., Preparation of porous Si and TiO2 nanofibres using a sulphur-templating method for lithium storage. 2015: p. 1-5. DOI: 10.1002/pssa.201431834."]},{"key":"dc:title","label":"Title","values":["Electrospun Titanium Dioxide and Silicon Composite Nanofibers for Advanced Lithium Ion Batteries"]}]}],"canonical_facts":{"dc:contributor":["Rafael Quirino","John Stone"],"dc:creator":["McCormac, Kathleen"],"dc:date.available":["2015-04-10T07:00:00Z"],"dc:description.abstract":["<p>A unique electrospinning method was implemented to fabricate composite nanofibers for lithium ion battery applications. The composite nanofibers were made of amorphous carbon, rutile phase TiO<sub>2</sub>, and cubic phase Si nanoparticles. Sulfur was utilized as a template to form void structures within the TiO<sub>2</sub> nanofiber matrix. This provides the desired space for the Si expansion during the lithiation process. Phase, structure, composition, and morphology of the nanofibers were characterized using Raman spectroscopy, SEM, EDS, TGA, and powder XRD. Carbonized TiO<sub>2</sub> nanofibers showed a low but stable specific capacity. Si Nanoparticles demonstrated an initially high but fast degrading capacity. In contrast, silicon in SiNP/C/TiO<sub>2</sub> nanofibers with sulfur as a template exhibits an impressive high specific capacity of ~3459 mAh g<sup>-1</sup>initially, 54% of which can be maintained after 180 cycles.</p>"],"dc:identifier":["https://digitalcommons.georgiasouthern.edu/etd/1228"],"dc:source":["McCormac, K., et al., Preparation of porous Si and TiO2 nanofibres using a sulphur-templating method for lithium storage. 2015: p. 1-5. DOI: 10.1002/pssa.201431834."],"dc:subject":["Lithium Ion Batteries","Titanium Dioxide","Silicon","Nanofiber","Materials Chemistry"],"dc:title":["Electrospun Titanium Dioxide and Silicon Composite Nanofibers for Advanced Lithium Ion Batteries"],"thesis:degree_discipline":["Department of Electrical Engineering"],"thesis:degree_level":["Thesis (open access)"],"thesis:degree_name":["Master of Science in Applied Physical Science (M.S.)"]},"updated_at":"2026-07-24T02:28:22Z"}