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Theoretical Study on Graphite and Lithium Metal as Anode Materials for Next-Generation Rechargeable Batteries - Gabin Yoon

Theoretical Study on Graphite and Lithium Metal as Anode Materials for Next-Generation Rechargeable Batteries (eBook)

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2022 | 1st ed. 2022
XIV, 65 Seiten
Springer Nature Singapore (Verlag)
978-981-13-8914-6 (ISBN)
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This thesis describes in-depth theoretical efforts to understand the reaction mechanism of graphite and lithium metal as anodes for next-generation rechargeable batteries. The first part deals with Na intercalation chemistry in graphite, whose understanding is crucial for utilizing graphite as an anode for Na-ion batteries. The author demonstrates that Na ion intercalation in graphite is thermodynamically unstable because of the unfavorable Na-graphene interaction. To address this issue, the inclusion of screening moieties, such as solvents, is suggested and proven to enable reversible Na-solvent cointercalation in graphite. Furthermore, the author provides the correlation between the intercalation behavior and the properties of solvents, suggesting a general strategy to tailor the electrochemical intercalation chemistry. The second part addresses the Li dendrite growth issue, which is preventing practical application of Li metal anodes. A continuum mechanics study considering various experimental conditions reveals the origins of irregular growth of Li metal. The findings provide crucial clues for developing effective counter strategies to control the Li metal growth, which will advance the application of high-energy-density Li metal anodes.



Dr. Gabin Yoon received a B.Sc. degree (2013) and Ph.D. degree (2019) in materials science and engineering from Seoul National University.

His research interest lies in the theoretical study of electrode materials for Li and Na rechargeable batteries using density functional theory and continuum mechanics. 

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This thesis describes in-depth theoretical efforts to understand the reaction mechanism of graphite and lithium metal as anodes for next-generation rechargeable batteries. The first part deals with Na intercalation chemistry in graphite, whose understanding is crucial for utilizing graphite as an anode for Na-ion batteries. The author demonstrates that Na ion intercalation in graphite is thermodynamically unstable because of the unfavorable Na-graphene interaction. To address this issue, the inclusion of screening moieties, such as solvents, is suggested and proven to enable reversible Na-solvent cointercalation in graphite. Furthermore, the author provides the correlation between the intercalation behavior and the properties of solvents, suggesting a general strategy to tailor the electrochemical intercalation chemistry. The second part addresses the Li dendrite growth issue, which is preventing practical application of Li metal anodes. A continuum mechanics study considering various experimental conditions reveals the origins of irregular growth of Li metal. The findings provide crucial clues for developing effective counter strategies to control the Li metal growth, which will advance the application of high-energy-density Li metal anodes.
Erscheint lt. Verlag 8.7.2022
Reihe/Serie Springer Theses
Springer Theses
Zusatzinfo XIV, 65 p. 47 illus., 43 illus. in color.
Sprache englisch
Themenwelt Naturwissenschaften Chemie Physikalische Chemie
Technik Elektrotechnik / Energietechnik
Technik Maschinenbau
Schlagworte Continuum mechanics study • High-energy-density Li metal anodes • Li/Na intercalation • Na-graphene interaction • Na-ion batteries • Na-solvent cointercalation in graphite
ISBN-10 981-13-8914-4 / 9811389144
ISBN-13 978-981-13-8914-6 / 9789811389146
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