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Synthesis, optical, magnetic and thermodynamic properties of rocksalt Li1.3Nb0.3Mn0.4O2 cathode material for Li-Ion batteries

Since the discovery of the reversible intercalation of lithium-ion materials associated with promising electrochemical properties, lithium-containing materials have attracted attention in the research and development of effective cathode materials for lithium-ion batteries. Despite various studies o...

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Main Authors: Kamel, Mohamed (Author) , Hanna, Abanoub R. N. (Author) , Krellner, Cornelius (Author) , Klingeler, Rüdiger (Author) , Abdellah, Mohamed (Author) , Mohamed, Mahmoud (Author) , Hassen, Arafa (Author) , Khalil, Ahmed S. G. (Author) , Abdel-Baset, Tarob (Author) , Hassan, Abdelwahab Hamdy Abdelwahab (Author)
Format: Article (Journal)
Language:English
Published: 16 July 2021
In: Crystals
Year: 2021, Volume: 11, Issue: 7, Pages: 1-12
ISSN:2073-4352
DOI:10.3390/cryst11070825
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.3390/cryst11070825
Verlag, lizenzpflichtig, Volltext: https://www.mdpi.com/2073-4352/11/7/825
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Author Notes:Mohamed Kamel, Abanoub R.N. Hanna, Cornelius Krellner, Rüdiger Klingeler, Mohamed Abdellah, Mahmoud Abdel-Hafiez, Arafa Hassen, Ahmed S.G. Khalil, Tarob Abdel-Baset and Abdelwahab Hassan
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Summary:Since the discovery of the reversible intercalation of lithium-ion materials associated with promising electrochemical properties, lithium-containing materials have attracted attention in the research and development of effective cathode materials for lithium-ion batteries. Despite various studies on synthesis, and electrochemical properties of lithium-based materials, fairly little fundamental optical and thermodynamic studies are available in the literature. Here, we report on the structure, optical, magnetic, and thermodynamic properties of Li-excess disordered rocksalt, Li1.3Nb0.3Mn0.4O2 (LNMO) which was comprehensively studied using powder X-ray diffraction, transient absorption spectroscopy, magnetic susceptibility, and low-temperature heat capacity measurements. Charge carrier dynamics and electron-phonon coupling in LNMO were studied using ultra-fast laser spectroscopy. Magnetic susceptibility and specific heat data are consistent with the onset of long-range antiferromagnetic order at the Néel temperatures of 6.5 (1.5) K. The effective magnetic moment of LNMO is found to be 3.60 μB. The temperature dependence of the inverse magnetic susceptibility follows the Curie-Weiss law in the high-temperature region and shows negative values of the Weiss temperature 52 K (3), confirming the strong AFM interactions.
Item Description:Im Titel sind folgende Zahlen tiefgestellt: 1.3 nach Li, 0.3 nach Nb, 0.4 nach Mn und 2 nach O
Gesehen am 27.10.2021
Physical Description:Online Resource
ISSN:2073-4352
DOI:10.3390/cryst11070825

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