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AuthorNisar, Umair
AuthorAmin, Ruhul
AuthorShakoor, Abdul
AuthorEssehli, Rachid
AuthorAl-Qaradawi, Siham
AuthorKahraman, Ramazan
AuthorBelharouak, Ilias
Available date2023-02-15T10:16:35Z
Publication Date2018
Publication NameEmergent Materials
ResourceScopus
URIhttp://dx.doi.org/10.1007/s42247-018-0014-0
URIhttp://hdl.handle.net/10576/40100
AbstractLithium-rich layer oxide, Li1.2Ni0.16Mn0.56Co0.08O2 (NMC), is a potential cathode candidate for high-energy density batteries. Issues such as cycling stability, rate performance, and cost are yet to be overcome before successful commercialization of the material. Here, we report on the synthesis of Cr-doped lithium-rich phases Li1.2Ni0.16Mn0.56Co0.08-xCrxO2 (where x = 0.00, 0.01, and 0.02) (NMC-Cr) by the sol-gel technique. Cr is homogeneously distributed in the crystal structure evidence by elemental mapping measurements. The Cr-doped materials exhibit much better cycling stability with 100% capacity retention versus 44% for the undoped sample after 50 cycles. The Cr-doped samples show excellent electrochemical performance at higher C-rate in comparison with the undoped NMC. The latter shows rapid capacity fading from 220 to 50 mAh g−1 at the 0.1 to 1C rates, respectively. Moreover, the Cr-containing materials do not show significant signs of voltage fading during cycling owing to the stabilization of the crystal lattice by Cr. The electrochemical impedance spectroscopy measurements also indicate the stable cell resistance on cycling for the Cr-doped phases compared to the undoped phase.
Languageen
PublisherSpringer Nature
SubjectBattery
Doped
Impedance
Layer structure
Lithium-rich cathode
Sol-gel
TitleSynthesis and electrochemical characterization of Cr-doped lithium-rich Li1.2Ni0.16Mn0.56Co0.08-xCrxO2 cathodes
TypeArticle
Pagination155-164
Issue Number3
Volume Number1
dc.accessType Abstract Only


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