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dc.contributor.advisor Verduzco, Rafael
dc.creatorLi, Xiaoyi
dc.date.accessioned 2020-08-21T17:20:37Z
dc.date.available 2020-08-21T17:20:37Z
dc.date.created 2020-08
dc.date.issued 2020-08-21
dc.date.submitted August 2020
dc.identifier.citation Li, Xiaoyi. "Structure Engineering of Polymers Used in Lithium-ion Battery Electrodes for Improved Performance." (2020) Diss., Rice University. https://hdl.handle.net/1911/109253.
dc.identifier.urihttps://hdl.handle.net/1911/109253
dc.description.abstract In this work, we focused on different applications of polymer in Lithium-ion battery electrodes, with an emphasis in structure engineering of polymers in order to provide a better understanding in the fundamental relationship between polymer structure, electrode composition, battery properties and performance. We first studied self-doped polymeric binder, PFP, in V2O5 cathodes. This fully water-processable, thermally annealed hybrid electrode shows steady cycling performance even when it is annealed at 400°C. We believe this is because the addition of 5 wt% PFP as binder helps suppress the crystallization of V2O5 xerogel and avoid the disruption of its layered structure. Then we discussed using conjugated polymer PNDI-T2EG as the active materials in electrode. We demonstrated that modification of conjugated polymer side-chains had a significant impact on the electrochemical performance of nano-composite electrodes, in particular enabling excellent performance at high charge-discharge rates. By attaching OEG side-chains, electrodes demonstrate exceptional rate performance at high charge-discharge rate, high mass loading, and high active material content. As a continued study, we look at a series of PNDI-based polymer with different ratios of OEG side-chains. All these works help to demonstrate that structure engineering of polymers is an efficient strategy when researching for the next better materials used for battery development.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subjectConjugated polymer
lithium-ion Battery
organic electrode
dc.title Structure Engineering of Polymers Used in Lithium-ion Battery Electrodes for Improved Performance
dc.type Thesis
dc.date.updated 2020-08-21T17:20:37Z
dc.type.material Text
thesis.degree.department Chemical and Biomolecular Engineering
thesis.degree.discipline Engineering
thesis.degree.grantor Rice University
thesis.degree.level Doctoral
thesis.degree.name Doctor of Philosophy


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