Enhancing Lithium Ion Batteries through Cation Doping and Graphene Coating

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dc.contributor.advisorFang, Hui
dc.creatorZavala, Caleb Alexander
dc.date.accessioned2019-10-17T21:41:02Z
dc.date.available2019-10-17T21:41:02Z
dc.date.issued2019-07
dc.descriptionUndergraduate Honors Thesisen_US
dc.description.abstractLiFeP0.1 has emerged as one of the most promising cathode materials for lithium ion batteries for a large variety of applications from smart phones and power tools. to electric vehicles. However. poor electronic conductivity and low lithium ion diffusion rate hinders its large-scale applications. It has been demonstrated that the electronic conductivity of LiFePO􀀫 can be improved by several methods, including powder size reduction. carbon layer coating, and lattice eloping. In this research. we investigate the effect brought by the combination of cation eloping and carbon layer coating. Zr or Ti cation eloped LifeP04 is synthesized using solid-state reaction. Graphene or glucose is used as a carbon coating agent. Phase and morphology of as-prepared powder are characterized by X-ray diffraction. Electrochemical properties are characterized by charge-discharge measurement at various rate. Results of these measurements were analyzed and arc represented in Figure IO and Figure I I. which display the spcci lie discharge and charge capacity per milliamperes an hour per gram (mAh/g) lor a 55-cyclc number. These results determined that LiFeP04 with a glucose carbon coating agent was the cathode material with the best and most consistent results.
dc.description.departmentEngineering Technology
dc.format.mimetypeapplication/pdf
dc.identifier.urihttps://hdl.handle.net/20.500.11875/2700
dc.language.isoen
dc.publisherSam Houston State University Honors Collegeen_US
dc.subjectLiFePo4
dc.subjectlithium ion batteries
dc.subjectcation doping
dc.subjectcarbon layer coating
dc.subjectglucose carbon coating agent
dc.titleEnhancing Lithium Ion Batteries through Cation Doping and Graphene Coating
dc.typeThesis
dc.type.materialText
thesis.degree.departmentElliot T. Bowers Honors College
thesis.degree.grantorSam Houston State University
thesis.degree.levelBachelors
thesis.degree.levelUndergraduate
thesis.degree.nameBachelor of Science

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