{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/78484"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/78484","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Understanding the deposition of Mg and intercalation of Mg2+ for future Mg-ion batteries","abstract":"This Thesis was approved for publication on 2015-04-27 at 10:01.","abstract_html":"This Thesis was approved for publication on 2015-04-27 at 10:01.","abstract_has_math":false,"creators":["Miller, Elizabeth Carol"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Chemistry","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-07-22T22:17:36Z","date_published":"2015-07-22T22:17:36Z","updated_at":"2026-07-22T22:26:11Z","subjects":["Magnesium-Ion Batteries","Polyoxometalate","Electrochemistry"],"languages":["en"],"rights":["Copyright 2015 Elizabeth Miller"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/78484","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Miller, Elizabeth Carol"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2015-07-22T22:17:36Z","2015-05","2015-04-27","2015-5"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Chemistry"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Magnesium-Ion Batteries","Polyoxometalate","Electrochemistry"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2015 Elizabeth Miller"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/78484"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["This Thesis was approved for publication on 2015-04-27 at 10:01.","DSpace SAF Submission Ingestion Package generated from Vireo submission #8081 on 2015-07-22 at 10:33:35","In efforts to decrease the world’s dependence on fossil fuels, renewable energy sources and storage are being actively sought, especially in the transportation sector. The electrification of vehicles hinges on the low cost, safety, and volumetric capacity of its energy storage devices, namely batteries. Currently, Li-ion batteries are used in commercial electric vehicles; however, these have limited capacities compared to metal anode batteries. Herein, this work describes the methods and advancements in understanding and developing Mg batteries, as an alternative to Li-ion batteries. Theoretically, Mg batteries have far superior volumetric capacities (3833 mAhcm-3 Mg vs. 760 mAhcm-3 graphite). Mg is a more earth abundant (13.9% Mg in earth’s crust compared to 7x10-4 % Li) and a less expensive alternative to Li ($2700/ton Mg and $64000/ton Li). In Chapter 1, polyoxometalates are electrochemically characterized as a possible cathode material for Mg-ion batteries. Phosphomolybdic acid is used a proof of concept material, showing reversible redox chemistry in a variety of nonaqueous electrolyte systems. Efforts are described to reduce dissolution with polymer binders and how the redox chemistry changes with cationic salts. In Chapter 2, the electrochemistry of Mg deposition and dissolution from the magnesium aluminum chloride complex is described. The results define the requirements for reversible behavior with ~100% Coulombic efficiencies. Voltammetric cycling alters the composition and the performance of the electrolyte. The electrolyte has no shelf life, and oligomers form due to the ring-opening polymerization of the THF solvent. From these results, a mechanism is proposed describing how the conditioning process of the MACC in THF improves its performance by both tuning the Mg:Al stoichiometry and eliminating oligomers.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2015-07-22 without embargo terms","The student, Elizabeth Miller, accepted the attached license on 2015-04-24 at 10:30.","The student, Elizabeth Miller, submitted this Thesis for approval on 2015-04-24 at 10:41.","Made available in DSpace on 2015-07-22T22:17:36Z (GMT). No. of bitstreams: 3 MILLER-THESIS-2015.pdf: 2612059 bytes, checksum: 563303009e4f685b0764e3c9c26a60a3 (MD5) Miller_Elizabeth.docx: 4379425 bytes, checksum: 6fe30844f24821eb96d9b46ee50a4b55 (MD5) LICENSE.txt: 4213 bytes, checksum: 177c2f3278b329355809c63bb5853308 (MD5) Previous issue date: 2015-04-27"]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Understanding the deposition of Mg and intercalation of Mg2+ for future Mg-ion batteries"]}]}],"canonical_facts":{"dc:creator":["Miller, Elizabeth Carol"],"dc:date":["2015-07-22T22:17:36Z","2015-05","2015-04-27","2015-5"],"dc:description":["This Thesis was approved for publication on 2015-04-27 at 10:01.","DSpace SAF Submission Ingestion Package generated from Vireo submission #8081 on 2015-07-22 at 10:33:35","In efforts to decrease the world’s dependence on fossil fuels, renewable energy sources and storage are being actively sought, especially in the transportation sector. The electrification of vehicles hinges on the low cost, safety, and volumetric capacity of its energy storage devices, namely batteries. Currently, Li-ion batteries are used in commercial electric vehicles; however, these have limited capacities compared to metal anode batteries. Herein, this work describes the methods and advancements in understanding and developing Mg batteries, as an alternative to Li-ion batteries. Theoretically, Mg batteries have far superior volumetric capacities (3833 mAhcm-3 Mg vs. 760 mAhcm-3 graphite). Mg is a more earth abundant (13.9% Mg in earth’s crust compared to 7x10-4 % Li) and a less expensive alternative to Li ($2700/ton Mg and $64000/ton Li). In Chapter 1, polyoxometalates are electrochemically characterized as a possible cathode material for Mg-ion batteries. Phosphomolybdic acid is used a proof of concept material, showing reversible redox chemistry in a variety of nonaqueous electrolyte systems. Efforts are described to reduce dissolution with polymer binders and how the redox chemistry changes with cationic salts. In Chapter 2, the electrochemistry of Mg deposition and dissolution from the magnesium aluminum chloride complex is described. The results define the requirements for reversible behavior with ~100% Coulombic efficiencies. Voltammetric cycling alters the composition and the performance of the electrolyte. The electrolyte has no shelf life, and oligomers form due to the ring-opening polymerization of the THF solvent. From these results, a mechanism is proposed describing how the conditioning process of the MACC in THF improves its performance by both tuning the Mg:Al stoichiometry and eliminating oligomers.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2015-07-22 without embargo terms","The student, Elizabeth Miller, accepted the attached license on 2015-04-24 at 10:30.","The student, Elizabeth Miller, submitted this Thesis for approval on 2015-04-24 at 10:41.","Made available in DSpace on 2015-07-22T22:17:36Z (GMT). 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