{"604815":{"#nid":"604815","#data":{"type":"event","title":"PhD Proposal by Matthew G. Boebinger","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003ETHE SCHOOL OF MATERIALS SCIENCE AND ENGINEERING\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EGEORGIA INSTITUTE OF TECHNOLOGY\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EUnder the provisions of the regulations for the degree\u003C\/strong\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cstrong\u003EDOCTOR OF PHILOSOPHY\u003C\/strong\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cstrong\u003Eon Monday, April 23, 2018\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003E3:00 PM\u003C\/strong\u003E\u003Cbr \/\u003E\r\n\u003Cstrong\u003Ein MRDC 4211\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003E\u0026nbsp;\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003Ewill be held the\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003E\u0026nbsp;\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EDISSERTATION\u0026nbsp;PROPOSAL\u0026nbsp;DEFENSE\u003C\/strong\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cstrong\u003Efor\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EMatthew G. Boebinger\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003E\u0026ldquo;\u003Cem\u003EIn Situ\u003C\/em\u003E Examination of Nanoscale Reaction Pathways in Battery Materials\u0026rdquo;\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003ECommittee Members:\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EProf. Matthew McDowell, Advisor, MSE\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EProf. \u003C\/strong\u003E\u003Cstrong\u003EJosh Kacher\u003C\/strong\u003E\u003Cstrong\u003E, MSE\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EProf. Meilin Liu, MSE\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EProf. Gleb Yushin, MSE\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EProf. Ting Zhu, ME\/MSE\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003E\u0026nbsp;\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EAbstract:\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EIn an effort to engineer cheaper, safer and more energy-dense batteries, new materials must be developed to store and transport active ions. However, the electrochemical reaction mechanisms of these materials must be understood and controlled to maximize reversibility during charge and discharge. The objective of this proposal is to use \u003Cem\u003Ein situ\u003C\/em\u003E transmission electron microscopy (TEM) to understand nanoscale reaction mechanisms and degradation processes in high-capacity electrode materials for Li-, Na- and K-ion batteries, as well as Li-ion conducting ceramic electrolytes.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nNa- and K-ion batteries are promising due to their low cost. However, the more substantial volumetric changes that these electrode materials undergo during reaction decreases the cyclability of these systems. For the continued development of these battery systems, it is critical to understand how the larger Na\u003Csup\u003E+\u003C\/sup\u003E and K\u003Csup\u003E+\u003C\/sup\u003E ions effect the nanoscale phase transformations of these reactions to improve reversibility of these battery systems. In addition, recent progress has been made towards engineering solid electrolytes for use in novel all-solid-state Li batteries with improved safety and higher energy density. However, the growth of a high-impedance interfacial phase at the Li metal \u0026ndash; ceramic electrolyte interface is a challenge that has hindered development. In both of these cases, a better understanding of the structural and chemical evolution of these materials during reaction is needed.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe first portion of this proposal is focused on using \u003Cem\u003Ein situ\u003C\/em\u003E experiments to understand the nanoscale transformation pathways in different battery materials during reaction with Li\u003Csup\u003E+\u003C\/sup\u003E, Na\u003Csup\u003E+\u003C\/sup\u003E and K\u003Csup\u003E+\u003C\/sup\u003E ions. The materials studied (Cu\u003Csub\u003E2\u003C\/sub\u003ES, FeS\u003Csub\u003E2\u003C\/sub\u003E and Sb) show interesting and counter-intuitive phase evolution and mechanical degradation behavior when reacting with the alkali ions of different sizes. The second portion of the proposal is focused on investigating interfacial phase transformations between lithium metal and oxide\/phosphate solid electrolyte materials. These experiments will be conducted in combination with macroscale characterization and electrochemistry techniques to draw connections between the nanoscale transformations and overall electrochemical behavior of these battery systems.\u003C\/p\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"In Situ Examination of Nanoscale Reaction Pathways in Battery Materials"}],"uid":"27707","created_gmt":"2018-04-06 16:00:09","changed_gmt":"2018-04-06 16:00:09","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2018-04-23T16:00:00-04:00","event_time_end":"2018-04-23T18:00:00-04:00","event_time_end_last":"2018-04-23T18:00:00-04:00","gmt_time_start":"2018-04-23 20:00:00","gmt_time_end":"2018-04-23 22:00:00","gmt_time_end_last":"2018-04-23 22:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"221981","name":"Graduate Studies"}],"categories":[],"keywords":[{"id":"102851","name":"Phd proposal"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1788","name":"Other\/Miscellaneous"}],"invited_audience":[{"id":"78761","name":"Faculty\/Staff"},{"id":"78771","name":"Public"},{"id":"174045","name":"Graduate students"},{"id":"78751","name":"Undergraduate students"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}