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Synthesis and characterization of advanced high capacity cathode active nanomaterials with three integrated spinel-layered phases for Li-ion batteries

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dc.contributor.authors Bulut, E; Can, M; Ozacar, M; Akbulut, H;
dc.date.accessioned 2020-10-16T11:09:50Z
dc.date.available 2020-10-16T11:09:50Z
dc.date.issued 2016
dc.identifier.citation Bulut, E; Can, M; Ozacar, M; Akbulut, H; (2016). Synthesis and characterization of advanced high capacity cathode active nanomaterials with three integrated spinel-layered phases for Li-ion batteries. JOURNAL OF ALLOYS AND COMPOUNDS, 670, 34-25
dc.identifier.issn 0925-8388
dc.identifier.uri https://doi.org/10.1016/j.jallcom.2016.02.051
dc.identifier.uri https://hdl.handle.net/20.500.12619/69823
dc.description.abstract Mesoporous cathode active materials that included undoped and separated Cu2+ and Co3+ doped spinels were prepared. The "doped spinel-Layered-Li-rich spinel" composite nanoparticles within the three integrated phased (LiM(0,02)Mn(1,98)O(4)eLi(2)MnO(3)-Li1,27Mn1,73O4; where M is Cu2+ and Co3+) were synthesized by a microwave assisted hydrothermal synthesis. These materials were investigated with X-Ray powder Diffraction spectroscopy (XRD), Scanning Electron Microscopy (SEM and FE-SEM), High Resolution Transmission Electron Microscopy (HR-TEM), galvanostatic cycling at 0.1C and 0.5C rates, Cyclic Voltammetry (CV), and Electrochemical Impedance Spectroscopy (EIS). The effects of the calcination temperature and the partial substitution of Mn3+ in the spinel by Cu2+ and Co3+, and onto the spinel structure were investigated with XRD. The lattice parameters of the spinel structured compounds were calculated from the XRD data using the Williamson-Hall equation. However, the morphological changes, which depended on the calcination temperature, were examined by SEM, FE-SEM and HRTEM. Furthermore, the two other phases which were different from LiM0,02Mn1,98O4 had a great impact on the electrochemical performance over the potential range of the 3-5 V. At the 0.1C rate, the first discharge capacities of undoped and Cu2+, Co3+ doped materials were 577, 285, 560 mAh/g respectively. After 50 cycles at 0.5C rate, we achieved 96.2%; 52.5%; 95.4% capacity retention for the undoped and Cu2+, Co3+ doped materials respectively. (C) 2016 Elsevier B.V. All rights reserved.
dc.language English
dc.publisher ELSEVIER SCIENCE SA
dc.subject Metallurgy & Metallurgical Engineering
dc.title Synthesis and characterization of advanced high capacity cathode active nanomaterials with three integrated spinel-layered phases for Li-ion batteries
dc.type Article
dc.identifier.volume 670
dc.identifier.startpage 25
dc.identifier.endpage 34
dc.contributor.department Sakarya Üniversitesi/Fen-Edebiyat Fakültesi/Kimya Bölümü
dc.contributor.saüauthor Bulut, Emrah
dc.contributor.saüauthor Akbulut, Hatem
dc.relation.journal JOURNAL OF ALLOYS AND COMPOUNDS
dc.identifier.wos WOS:000371765800004
dc.identifier.doi 10.1016/j.jallcom.2016.02.051
dc.identifier.eissn 1873-4669
dc.contributor.author Bulut, Emrah
dc.contributor.author Akbulut, Hatem


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