Title:
Application of highly porous carbons for electrochemical energy storage devices

dc.contributor.advisor Yushin, Gleb
dc.contributor.author Gu, Wentian
dc.contributor.committeeMember Alamgir, Faisal
dc.contributor.committeeMember Alexeev, Alexander
dc.contributor.committeeMember Ting, Zhu
dc.contributor.committeeMember Fuller, Thomas
dc.contributor.department Materials Science and Engineering
dc.date.accessioned 2016-08-22T12:20:40Z
dc.date.available 2016-08-22T12:20:40Z
dc.date.created 2015-08
dc.date.issued 2015-07-13
dc.date.submitted August 2015
dc.date.updated 2016-08-22T12:20:40Z
dc.description.abstract Highly porous carbon plays an important role in the fabrication of electrode materials, both for high-power supercapacitors and Li-ion batteries. It qualifies as suitable electrodes for high-power supercapacitors. The first part of this work discuss the effect of oxygen-containing functional groups (including hydroxyl, carbonyl and carboxyl groups) on the self-discharge behavior of carbon-based electrical double layer supercapacitors (EDLCs). The effects of carbon pore size and pore size distribution, pore alignment, electrolyte solvent and conducting ion are also studied. Based on the understandings of these multiple factors which have impact on the performance of carbon-based EDLCs, a novel S-doped activated carbon synthesized by carbonization and simultaneous activation of S-based polymers, which is almost free of bottle-neck pores and performs excellent capacitance and capacitance retention, is developed. Besides their essential role in carbon-based EDLCs, highly porous carbon materials have also been intensively studied as structural scaffold and conductive additives to assist the highly capacitive but poorly conductive active electrode materials for Li-ion batteries. The second part of this work discuss the application of mesoporous activated carbon spheres as structural matrix and conductive network which enables higher capacity, better rate retention and longer cycle life of transition metal fluoride-based cathode materials, compared to the simple mixture of non-porous conductive carbon filler and the active material.
dc.description.degree Ph.D.
dc.format.mimetype application/pdf
dc.identifier.uri http://hdl.handle.net/1853/55528
dc.language.iso en_US
dc.publisher Georgia Institute of Technology
dc.subject Electrochemistry
dc.subject Supercapacitor
dc.subject Li-ion battery
dc.subject Porous carbon
dc.title Application of highly porous carbons for electrochemical energy storage devices
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.advisor Yushin, Gleb
local.contributor.corporatename School of Materials Science and Engineering
local.contributor.corporatename College of Engineering
relation.isAdvisorOfPublication 5d76fc8c-ac2a-461f-9f18-95d72e537c74
relation.isOrgUnitOfPublication 21b5a45b-0b8a-4b69-a36b-6556f8426a35
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
thesis.degree.level Doctoral
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