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AuthorAbraham, Jeffin James
AuthorTariq, Hanan
AuthorShakoor, Rana Abdul
AuthorKahraman, Ramazan
AuthorAl-Qaradawi, Siham
Available date2022-10-05T07:23:06Z
Publication Date2020
Publication NameChemistrySelect
ResourceScopus
URIhttp://dx.doi.org/10.1002/slct.202003658
URIhttp://hdl.handle.net/10576/34833
AbstractThis study reports hybrid cathodes formation by cation substitution in which Li+ substitution has been considered for Na+ in the structure of Na(2-x)LixFeP2O7 (x=0, 0.6) to form Na1.4Li0.6FeP2O7 cathodes. Na(2-x)LixFeP2O7 (x=0, 0.6) cathodes were synthesized using the solid-state synthesis technique and characterized by various methods. The structural analysis (XRD, FE-SEM) indicates that the submicron-sized, phase pure, and crystalline materials having irregular morphology have been developed. Moreover, Li+ substitution does not alter the triclinic parent structure of Na2FeP2O7. Thermogravimetric analysis (TGA) shows that Li+ substitution into Na2FeP2O7 improves its thermal stability up to 550 °C with only ∼5 % weight loss. The electrochemical performance of Na2FeP2O7 and Na1.4Li0.6FeP2O7 in both lithium (Li) and sodium (Na) half-cells is investigated using different electrochemical techniques. It is noticed that Na1.4Li0.6FeP2O7 is electrochemically active both in lithium (Li) and sodium (Na) cells with promising cyclability. However, compared with Na2FeP2O7, Na1.4Li0.6FeP2O7 suffers from inferior electrochemical performance, which might be associated with the lattice distortion of Na2FeP2O7 due to Li+ substitution having a lower ionic radius than the Na+. Considering Na2FeP2O7 as a baseline material, a new hybrid Na1.4Li0.6FeP2O7 cathode has been developed, which can be used to synthesize other new cathode materials with improved performance.
SponsorThis publication was made possible by NPRP Grant#NPRP11S-1225-170128 from Qatar National Research Fund (a member of the Qatar Foundation). Statements made herein are solely the responsibility of the authors. Ramazan Kahraman and all the contributors would like to acknowledge the financial support of QU internal grant-QUCG-CENG-20/21-2. FE-SEM analysis was accomplished at the Central Laboratory Unit (CLU), Qatar University, Doha, Qatar.
Languageen
PublisherJohn Wiley and Sons Inc
SubjectCharge and discharge capacity
Cyclic voltammetry
Rate capability
Substitution
X-Ray Diffraction
TitleSynthesis and performance evaluation of Na(2-x)LixFeP2O7 (x=0, 0.6) hybrid cathodes
TypeArticle
Pagination12548-12557
Issue Number40
Volume Number5
dc.accessType Open Access


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