{"id":{"repo_id":"gatech","oai_identifier":"oai:repository.gatech.edu:1853/75083"},"canonical_url":"https://search.dev.ndltd.org/etd/gatech/oai:repository.gatech.edu:1853/75083","repository":{"repo_id":"gatech","name":"Georgia Tech","base_url":"https://repository.gatech.edu/server/oai/request"},"display":{"title":"Operando Characterization of Lithium-Ion Batteries using Lab-Scale X-ray Emission/Absorption Spectroscopy","abstract":"Tracking changes in the electronic structure of target elements is crucial to investigate the nature of redox reactions occurring in battery electrodes. Core-hole characterization techniques such as X-ray Emission Spectroscopy (XES) and X-ray Absorption Fine Structure (XAFS) perform this role well through the generation/quenching of core holes in the sample. Laboratory-based core hole x-ray spectroscopy techniques have recently gained popularity as they are more accessible and provide energy resolution close to that of a synchrotron source. In this study, the use of a lab-scale XAFS/XES to investigate the change in the electronic structure around transition elements present in electrode materials for lithium-ion storage is explored under operando conditions. This enables real-time monitoring of chemical shifts resulting from changing electrode potential. The relationship between energy shifts and oxidation/spin state is obtained using K-edge XANES and Kβ1,3 XES measurements of transition metals present using reference compounds. This relationship is utilized to predict the change in chemical environment during the cycling of cathode/anode materials for energy storage. Additionally, the spin sensitivity of Kα and Kβ fluorescence is utilized to explore the magnetic behavior of LCO cathodes in the first 10% of lithium removal along with K-edge XAFS for oxygen and cobalt to investigate local and electronic structure changes.","abstract_html":"Tracking changes in the electronic structure of target elements is crucial to investigate the nature of redox reactions occurring in battery electrodes. Core-hole characterization techniques such as X-ray Emission Spectroscopy (XES) and X-ray Absorption Fine Structure (XAFS) perform this role well through the generation/quenching of core holes in the sample. Laboratory-based core hole x-ray spectroscopy techniques have recently gained popularity as they are more accessible and provide energy resolution close to that of a synchrotron source. In this study, the use of a lab-scale XAFS/XES to investigate the change in the electronic structure around transition elements present in electrode materials for lithium-ion storage is explored under operando conditions. This enables real-time monitoring of chemical shifts resulting from changing electrode potential. The relationship between energy shifts and oxidation/spin state is obtained using K-edge XANES and Kβ1,3 XES measurements of transition metals present using reference compounds. This relationship is utilized to predict the change in chemical environment during the cycling of cathode/anode materials for energy storage. Additionally, the spin sensitivity of Kα and Kβ fluorescence is utilized to explore the magnetic behavior of LCO cathodes in the first 10% of lithium removal along with K-edge XAFS for oxygen and cobalt to investigate local and electronic structure changes.","abstract_has_math":false,"creators":["Krishnan, Abiram"],"institution":"Georgia Institute of Technology","degree_name":null,"degree_level":"Masters","degree_discipline":null,"degree_department":"Materials Science and Engineering","school":null,"contributors":[],"advisors":["Alamgir, Faisal M."],"committee_chairs":[],"committee_members":["Yushin, Gleb","Srinivasarao, Mohan","Toor, Anju"],"year":2023,"date_issued":"2023-05-02","date_published":"2023-05-02","updated_at":"2026-07-27T19:51:20Z","subjects":["XES","XAFS","Spin structure","Li-Ion Batteries","operando","electronic structure"],"languages":["en_US"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/1853/75083","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Alamgir, Faisal M."]},{"key":"dc:contributor.committeemember","label":"Committee Member","values":["Yushin, Gleb","Srinivasarao, Mohan","Toor, Anju"]},{"key":"dc:contributor.department","label":"Department","values":["Materials Science and Engineering"]},{"key":"dc:creator","label":"Author","values":["Krishnan, Abiram"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2024-05-23T19:16:08Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2024-05-23T19:16:08Z"]},{"key":"dc:date.issued","label":"Date","values":["2023-05-02"]},{"key":"dc:publisher","label":"Institution","values":["Georgia Institute of Technology"]},{"key":"dc:type","label":"Dc Type","values":["Text"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Masters"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["XES","XAFS","Spin structure","Li-Ion Batteries","operando","electronic structure"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en_US"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/1853/75083"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Tracking changes in the electronic structure of target elements is crucial to investigate the nature of redox reactions occurring in battery electrodes. Core-hole characterization techniques such as X-ray Emission Spectroscopy (XES) and X-ray Absorption Fine Structure (XAFS) perform this role well through the generation/quenching of core holes in the sample. Laboratory-based core hole x-ray spectroscopy techniques have recently gained popularity as they are more accessible and provide energy resolution close to that of a synchrotron source. In this study, the use of a lab-scale XAFS/XES to investigate the change in the electronic structure around transition elements present in electrode materials for lithium-ion storage is explored under operando conditions. This enables real-time monitoring of chemical shifts resulting from changing electrode potential. The relationship between energy shifts and oxidation/spin state is obtained using K-edge XANES and Kβ1,3 XES measurements of transition metals present using reference compounds. This relationship is utilized to predict the change in chemical environment during the cycling of cathode/anode materials for energy storage. Additionally, the spin sensitivity of Kα and Kβ fluorescence is utilized to explore the magnetic behavior of LCO cathodes in the first 10% of lithium removal along with K-edge XAFS for oxygen and cobalt to investigate local and electronic structure changes."]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["M.S."]},{"key":"dc:format.mimetype","label":"Dc Format Mimetype","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Operando Characterization of Lithium-Ion Batteries using Lab-Scale X-ray Emission/Absorption Spectroscopy"]}]}],"canonical_facts":{"dc:contributor.advisor":["Alamgir, Faisal M."],"dc:contributor.committeemember":["Yushin, Gleb","Srinivasarao, Mohan","Toor, Anju"],"dc:contributor.department":["Materials Science and Engineering"],"dc:creator":["Krishnan, Abiram"],"dc:date.accessioned":["2024-05-23T19:16:08Z"],"dc:date.available":["2024-05-23T19:16:08Z"],"dc:date.issued":["2023-05-02"],"dc:description.abstract":["Tracking changes in the electronic structure of target elements is crucial to investigate the nature of redox reactions occurring in battery electrodes. Core-hole characterization techniques such as X-ray Emission Spectroscopy (XES) and X-ray Absorption Fine Structure (XAFS) perform this role well through the generation/quenching of core holes in the sample. Laboratory-based core hole x-ray spectroscopy techniques have recently gained popularity as they are more accessible and provide energy resolution close to that of a synchrotron source. In this study, the use of a lab-scale XAFS/XES to investigate the change in the electronic structure around transition elements present in electrode materials for lithium-ion storage is explored under operando conditions. This enables real-time monitoring of chemical shifts resulting from changing electrode potential. The relationship between energy shifts and oxidation/spin state is obtained using K-edge XANES and Kβ1,3 XES measurements of transition metals present using reference compounds. This relationship is utilized to predict the change in chemical environment during the cycling of cathode/anode materials for energy storage. Additionally, the spin sensitivity of Kα and Kβ fluorescence is utilized to explore the magnetic behavior of LCO cathodes in the first 10% of lithium removal along with K-edge XAFS for oxygen and cobalt to investigate local and electronic structure changes."],"dc:description.degree":["M.S."],"dc:format.mimetype":["application/pdf"],"dc:identifier.uri":["https://hdl.handle.net/1853/75083"],"dc:language.iso":["en_US"],"dc:publisher":["Georgia Institute of Technology"],"dc:subject":["XES","XAFS","Spin structure","Li-Ion Batteries","operando","electronic structure"],"dc:title":["Operando Characterization of Lithium-Ion Batteries using Lab-Scale X-ray Emission/Absorption Spectroscopy"],"dc:type":["Text"],"thesis:degree_level":["Masters"]},"updated_at":"2026-07-27T19:51:20Z"}