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AuthorNisar, Umair
AuthorPetla, Ramesh
AuthorJassim Al-Hail, Sara Ahmad
AuthorQuddus, Aisha Abdul
AuthorMonawwar, Haya
AuthorShakoor, Abdul
AuthorEssehli, Rachid
AuthorAmin, Ruhul
Available date2023-09-28T11:44:19Z
Publication Date2020-04-17
Publication NameRSC Advances
Identifierhttp://dx.doi.org/10.1039/d0ra02060e
CitationNisar, U., Petla, R., Al-Hail, S. A. J., Quddus, A. A., Monawwar, H., Shakoor, A., ... & Amin, R. (2020). Impact of surface coating on electrochemical and thermal behaviors of a Li-rich Li 1.2 Ni 0.16 Mn 0.56 Co 0.08 O 2 cathode. RSC advances, 10(26), 15274-15281.
ISSN2046-2069
URIhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85084180401&origin=inward
URIhttp://hdl.handle.net/10576/48116
AbstractLithium-rich layered oxide materials are considered as potential cathode materials for future high-performance lithium-ion batteries (LIBs) owing to their high operating voltage and relatively high specific capacity. However, perceptible issues such as poor rate performance, poor capacity retention, and voltage degradation during cycling need to be improved before the successful commercialization of the material. In this report, zirconia coated Li1.2Ni0.16Mn0.56Co0.08O2 (NMC) (where ZrO2 = 1.0, 1.5 and 2.0 wt%) materials are synthesized using a sol-gel assisted ball milling approach. A comparison of structural, morphological and electrochemical properties is examined to elucidate the promising role of ZrO2 coating on the performance of the NMC cathode. A uniform and homogeneous ZrO2 coating is observed on the surface of NMC particles as evident by TEM elemental mapping images. The ZrO2 coated NMCs exhibit significantly improved electrochemical performance at a higher C-rate as compared to pristine material. 1.5% ZrO2 coated NMC demonstrates better cycling stability (95% capacity retention) than pristine NMC (77% capacity retention) after 50 cycles. All ZrO2 coated NMC materials demonstrated improved thermal stability compared to pristine material. The difference in onset temperature of 2 wt% ZrO2 coated and pristine NMC is 20 °C. The improved electrochemical performance of ZrO2 coated NMC can be attributed to the stabilization of its surface structure due to the presence of ZrO2.
SponsorThis publication was made possible by NPRP Grant 11S-1225-170128 from Qatar National Research Fund (a member of the Qatar Foundation).
Languageen
PublisherRoyal Society of Chemistry
SubjectLithium-ion batteries
Pristine materials
TitleImpact of surface coating on electrochemical and thermal behaviors of a Li-rich Li1.2Ni0.16Mn0.56Co0.08O2 cathode
TypeArticle
Pagination15274-15281
Issue Number26
Volume Number10
dc.accessType Open Access


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