Please use this identifier to cite or link to this item: https://apo.ansto.gov.au/dspace/handle/10238/11531
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dc.contributor.authorJena, A-
dc.contributor.authorLee, CH-
dc.contributor.authorPang, WK-
dc.contributor.authorPeterson, VK-
dc.contributor.authorSharma, N-
dc.contributor.authorWang, CC-
dc.contributor.authorSong, YF-
dc.contributor.authorLin, CC-
dc.contributor.authorChang, H-
dc.contributor.authorLiu, RS-
dc.date.accessioned2021-08-27T00:39:17Z-
dc.date.available2021-08-27T00:39:17Z-
dc.date.issued2017-03-23-
dc.identifier.citationJena, A., Lee, C.-H., Pang, W. K., Peterson, V. K., Sharma, N., Wang, C.-C., Song, Y.-F., Lin, C.-C., Chang, H. & Liu, R. S. (2017). Capacity enhancement of the quenched Li-Ni-Mn-Co oxide high-voltage Li-ion battery positive electrode. Electrochimica Acta, 236, 10-17. doi:10.1016/j.electacta.2017.03.163en_US
dc.identifier.issn0013-4686-
dc.identifier.urihttps://doi.org/10.1016/j.electacta.2017.03.163en_US
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11531-
dc.description.abstractLi-rich metal oxides, regarded as a high-voltage composite cathode, is currently one of the hottest positive electrode material for lithium-ion batteries, due to its high-capacity and high-energy performance. The crystallography, phase composition and morphology can be altered by synthesis parameters, which can influence drastically the capacity and cycling performance. In this work, we demonstrate Li1.207Ni0.127Mn0.54Co0.127O2, obtained by a co-precipitation method, exhibits super-high specific capacity up to 298 mAh g−1 and excellent capacity retention of ∼100% up to 50 cycles. Using neutron powder diffraction and transmission X-ray microscopy, we have found that the cooling-treatments applied after sintering during synthesis are crucially important in controlling the phase composition and morphology of the cathodes, thereby influencing the electrochemical performance. Unique spherical microstructure, larger lattice, and higher content of Li-rich monoclinic component can be achieved in the rapid quenching process, whereas severe particle cracking along with the smaller lattice and lower monoclinic component content is obtained when natural cooling of the furnace is applied. Combined with electrochemical impedance spectra, a plausible mechanism is described for the poorer specific capacity and cycling stability of the composite cathodes. © 2017 Elsevier Ltd.en_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.subjectCathodesen_US
dc.subjectElectrodesen_US
dc.subjectLithiumen_US
dc.subjectNeutron diffractionen_US
dc.subjectMicroscopyen_US
dc.subjectCapacityen_US
dc.subjectElectric batteriesen_US
dc.subjectElectric potentialen_US
dc.titleCapacity enhancement of the quenched Li-Ni-Mn-Co oxide high-voltage Li-ion battery positive electrodeen_US
dc.typeJournal Articleen_US
dc.date.statistics2021-08-25-
Appears in Collections:Journal Articles

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