Production of lignin based spherical carbon particles for electrochemical energy storage

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.advisorGuizani, Chamseddine
dc.contributor.authorPauls, Glen
dc.contributor.schoolKemian tekniikan korkeakoulufi
dc.contributor.supervisorVapaavuori, Jaana
dc.date.accessioned2023-09-10T17:01:05Z
dc.date.available2023-09-10T17:01:05Z
dc.date.issued2023-08-22
dc.description.abstractThis thesis explores lignin-based hard carbons and addresses the challenge of morphology retention during thermal treatment. The study investigates the pyrolytic behaviour of lignin and its conversion into hard carbons, aiming to understand the mechanisms and factors influencing their formation. Special attention is given to evaluating the performance of specially engineered kraft lignin micro particles (referred to as KLMP) compared to commercially available kraft lignin extracted through the LignoBoost® process (referred to as LB) as battery anodes in lithium-ion batteries. The results emphasize the challenge of maintaining the morphology of lignin, which typically softens, melts, and foams, as observed in LB. However, in contrast, the findings demonstrate the remarkable ability of KLMP to preserve the morphology effectively, showcasing its superior performance compared to LB. The thesis employs a range of characterization techniques to thoroughly analyse the structural, morphological, and chemical transformations occurring during lignin conversion. Additionally, it comprehensively examines the thermal behaviour of lignin and evaluates the electrochemical performance of the resulting carbonized samples. These valuable findings significantly contribute to the advancement of lignin-based hard carbons as sustainable and high-performance materials for electro-chemical energy storage applications.en
dc.format.extent53+20
dc.format.mimetypeapplication/pdfen
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/123408
dc.identifier.urnURN:NBN:fi:aalto-202309105768
dc.language.isoenen
dc.locationPKfi
dc.programmeMaster's Programme in Biological and Chemical Engineering for a Sustainable Bioeconomyfi
dc.programme.majorMaterials and Biopolymersfi
dc.programme.mcodeCHEM3057fi
dc.subject.keywordligninen
dc.subject.keywordhard carbonsen
dc.subject.keywordspherical lignin particlesen
dc.subject.keywordlithium-ion batteriesen
dc.subject.keywordcarbonizationen
dc.titleProduction of lignin based spherical carbon particles for electrochemical energy storageen
dc.typeG2 Pro gradu, diplomityöfi
dc.type.ontasotMaster's thesisen
dc.type.ontasotDiplomityöfi
local.aalto.electroniconlyyes
local.aalto.openaccessyes

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