DC Field | Value | Language |
---|---|---|
dc.contributor.author | Luu, Norman S. | - |
dc.contributor.author | Lim, Jin-Myoung | - |
dc.contributor.author | Torres-Castanedo, Carlos G. | - |
dc.contributor.author | Park, Kyu-Young | - |
dc.contributor.author | Moazzen, Elahe | - |
dc.contributor.author | He, Kun | - |
dc.contributor.author | Meza, Patricia E. | - |
dc.contributor.author | Li, Wenyun | - |
dc.contributor.author | Downing, Julia R. | - |
dc.contributor.author | Hu, Xiaobing | - |
dc.contributor.author | Dravid, Vinayak P. | - |
dc.contributor.author | Barnett, Scott A. | - |
dc.contributor.author | Bedzyk, Michael J. | - |
dc.contributor.author | Hersam, Mark C. | - |
dc.date.accessioned | 2021-12-02T08:35:31Z | - |
dc.date.available | 2021-12-02T08:35:31Z | - |
dc.date.created | 2021-11-30 | - |
dc.date.issued | 2021-09-28 | - |
dc.identifier.issn | 2574-0962 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/107714 | - |
dc.description.abstract | Lithium nickel manganese cobalt oxides (NMCs) are promising cathode materials for high-performance lithium-ion batteries. Although these materials are commonly cycled within mild voltage windows (up to 4.3 V vs Li/Li+), operation at high voltages (>4.7 V vs Li/Li+) to access additional capacity is generally avoided due to severe interfacial and chemomechanical degradation. At these high potentials, NMC degradation is caused by exacerbated electrolyte decomposition reactions and non-uniform buildup of chemomechanical strains that result in particle fracture. By applying a conformal graphene coating on the surface of NMC primary particles, we find significant enhancements in the high-voltage cycle life and Coulombic efficiency upon electrochemical cycling. Postmortem X-ray diffraction, X-ray photoelectron spectroscopy, and electron microscopy suggest that the graphene coating mitigates electrolyte decomposition reactions and reduces particle fracture and electrochemical creep. We propose a relationship between the spatial uniformity of lithium flux and particle-level mechanical degradation and show that a conformal graphene coating is well-suited to address these issues. Overall, these results delineate a pathway for rationally mitigating high-voltage chemomechanical degradation of nickel-rich cathodes that can be applied to existing and emerging classes of battery materials. © | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.relation.isPartOf | Acs Applied Energy Materials | - |
dc.title | Elucidating and Mitigating High-Voltage Interfacial Chemomechanical Degradation of Nickel-Rich Lithium-Ion Battery Cathodes via Conformal Graphene Coating | - |
dc.type | Article | - |
dc.identifier.doi | 10.1021/acsaem.1c01995 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | Acs Applied Energy Materials, v.4, no.10, pp.11069 - 11079 | - |
dc.identifier.wosid | 000711236300068 | - |
dc.citation.endPage | 11079 | - |
dc.citation.number | 10 | - |
dc.citation.startPage | 11069 | - |
dc.citation.title | Acs Applied Energy Materials | - |
dc.citation.volume | 4 | - |
dc.contributor.affiliatedAuthor | Park, Kyu-Young | - |
dc.identifier.scopusid | 2-s2.0-85116798784 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | ELECTROCHEMICAL PROPERTIES | - |
dc.subject.keywordPlus | CHARGE HETEROGENEITY | - |
dc.subject.keywordPlus | CYCLING PERFORMANCE | - |
dc.subject.keywordPlus | SURFACE-CHEMISTRY | - |
dc.subject.keywordPlus | CARBON-BLACKS | - |
dc.subject.keywordPlus | LINI0.5MN0.3CO0.2O2 | - |
dc.subject.keywordPlus | CONDUCTIVITY | - |
dc.subject.keywordPlus | CAPACITY | - |
dc.subject.keywordPlus | LICOO2 | - |
dc.subject.keywordPlus | LINI0.5CO0.2MN0.3O2 | - |
dc.subject.keywordAuthor | battery cathode | - |
dc.subject.keywordAuthor | lithium nickel manganese cobalt oxide | - |
dc.subject.keywordAuthor | electrochemical creep | - |
dc.subject.keywordAuthor | cycle life | - |
dc.subject.keywordAuthor | high voltage | - |
dc.subject.keywordAuthor | chemomechanical degradation | - |
dc.subject.keywordAuthor | Coulombic efficiency | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Energy & Fuels | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Energy & Fuels | - |
dc.relation.journalResearchArea | Materials Science | - |
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