Rational design of Li off-stoichiometric Ni-rich layered cathode materials for Li-ion batteries

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dc.contributor.authorSong, SHen_AU
dc.contributor.authorHong, Sen_AU
dc.contributor.authorCho, Men_AU
dc.contributor.authorYoo, JGen_AU
dc.contributor.authorJin, HMen_AU
dc.contributor.authorLee, SHen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorIkeda, Ken_AU
dc.contributor.authorKim, Jen_AU
dc.contributor.authorNam, SCen_AU
dc.contributor.authorYu, SHen_AU
dc.contributor.authorPark, Ien_AU
dc.contributor.authorKim, Hen_AU
dc.date.accessioned2024-09-19T06:30:19Zen_AU
dc.date.available2024-09-19T06:30:19Zen_AU
dc.date.issued2022-11en_AU
dc.date.statistics2024-06-20en_AU
dc.descriptionThis work was supported by the National Research Foundation of Korea (NRF) funded by the Korea government (MSIT) (Grant No. NRF-2017M2A2A6A05017652 and 1711139323). This work was also supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government (MOTIE) (20221B1010003B, Integrated High-Quality Technology Development of Remanufacturing Spent Cathode for Low Carbon Resource Recirculation) and RIST-POSCO R&D program funded by POSCO (2020A023). Neutron total scattering measurement was approved by the Neutron Science Proposal Review Committee of J-PARC MLF (Proposal No. 2020A0017).en_AU
dc.description.abstractThe electrification trend in the automotive industry is fueling research on Ni-rich layered NCM cathode materials with high specific capacities. The simplest way to maximize the electrochemical performance of Ni-rich NCM is to tune the crystal structure by controlling the Li content and synthesis temperature. Herein, we demonstrate the critical roles of the Li content and synthesis temperature in determining the crystal structure of Li-excess Ni-rich NCM with enhanced electrochemical performance. The crystal structure of Li-excess Ni-rich NCM was systemically investigated using X-ray diffraction, neutron diffraction, and X-ray absorption spectroscopy, revealing that excess Li can be accommodated in Ni-rich NCM as the synthesis temperature decreases, resulting in stable cycle performance at high working voltage. We believe that our findings provide a rational reason for the excess amount Li required for optimization of the synthesis of Ni-rich NCM and offer insight for the simplest design of Ni-rich cathode materials that are stable under high-voltage operation. © 2022 Elsevier B.V.en_AU
dc.identifier.articlenumber137685en_AU
dc.identifier.citationSong, S. H., Hong, S., Cho, M., Yoo, J.-G., Min Jin, H., Lee, S.-H., Avdeev, M., Ikeda, K., Kim, J., Nam, S. C., Yu, S.-H., Park, I., & Kim, H. (2022). Rational design of Li off-stoichiometric Ni-rich layered cathode materials for Li-ion batteries. Chemical Engineering Journal, 448, 137685. doi:10.1016/j.cej.2022.137685en_AU
dc.identifier.issn1385-8947en_AU
dc.identifier.journaltitleChemical Engineering Journalen_AU
dc.identifier.urihttps://doi.org/10.1016/j.cej.2022.137685en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15687en_AU
dc.identifier.volume448en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectLithiumen_AU
dc.subjectLithium ion batteriesen_AU
dc.subjectStoichiometryen_AU
dc.subjectCathodesen_AU
dc.subjectNickelen_AU
dc.subjectElectrochemistryen_AU
dc.subjectCrystal structureen_AU
dc.subjectSynthesisen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectSpectroscopyen_AU
dc.titleRational design of Li off-stoichiometric Ni-rich layered cathode materials for Li-ion batteriesen_AU
dc.typeJournal Articleen_AU
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