Please use this identifier to cite or link to this item: https://doi.org/10.1039/c6ra17681j
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dc.titleGrain boundary effects on Li-ion diffusion in a Li1.2Co0.13Ni0.13Mn0.54O2 thin film cathode studied by scanning probe microscopy techniques
dc.contributor.authorYang, S
dc.contributor.authorYan, B
dc.contributor.authorLu, L
dc.contributor.authorZeng, K
dc.date.accessioned2020-09-02T07:03:10Z
dc.date.available2020-09-02T07:03:10Z
dc.date.issued2016
dc.identifier.citationYang, S, Yan, B, Lu, L, Zeng, K (2016). Grain boundary effects on Li-ion diffusion in a Li1.2Co0.13Ni0.13Mn0.54O2 thin film cathode studied by scanning probe microscopy techniques. RSC Advances 6 (96) : 94000-94009. ScholarBank@NUS Repository. https://doi.org/10.1039/c6ra17681j
dc.identifier.issn20462069
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/174038
dc.description.abstractThis paper presents the results of in situ characterization of grain boundary effects on Li-ion diffusion in Li1.2Co0.13Ni0.13Mn0.54O2 thin film cathode by using various Scanning Probe Microscopy (SPM) techniques. In particular, conductive-AFM results show that grain boundaries are more conductive than those in the grain interior. With the increase of bias voltage, the high conductive regimes extend from grain boundaries to interiors. I-V curves show decreased current and increased voltage for current initiation when the tip is moved farther away from boundaries. Furthermore, positive and negative bias applied at grain boundary by biased-AFM can distinguish and manipulate the local Li-ion intercalation/de-intercalation processes at grain level in the cathode material without assembly of a full battery cell. Exfoliation and delamination, degradation and structural changes are observed when the Li-ions are move-out or move-into the layered structure of the cathode at the grain level. These results can provide important insights into understanding the Li-ion diffusion and aging mechanisms of cathode materials during charge/discharge processes. This journal is © The Royal Society of Chemistry 2016.
dc.sourceUnpaywall 20200831
dc.subjectBias voltage
dc.subjectCathodes
dc.subjectCharacterization
dc.subjectCobalt
dc.subjectDiffusion
dc.subjectElectrodes
dc.subjectGrain boundaries
dc.subjectHydrophobicity
dc.subjectIons
dc.subjectLithium
dc.subjectManganese
dc.subjectNickel
dc.subjectScanning probe microscopy
dc.subjectThin films
dc.subjectCath-ode materials
dc.subjectCharge/discharge
dc.subjectGrain boundary effects
dc.subjectIn-situ characterization
dc.subjectIon intercalation
dc.subjectLayered Structures
dc.subjectScanning probe microscopy techniques
dc.subjectThin film cathodes
dc.subjectLithium-ion batteries
dc.typeArticle
dc.contributor.departmentDEPT OF MECHANICAL ENGINEERING
dc.description.doi10.1039/c6ra17681j
dc.description.sourcetitleRSC Advances
dc.description.volume6
dc.description.issue96
dc.description.page94000-94009
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