Structural, magnetic and lithium insertion properties of spinel-type Li2Mn3MO8 oxides (M = Mg, Co, Ni, Cu)

Strobel, Pierre; Palos, A. Ibarra; Anne, M.; Cras, Frédéric Le

doi:10.1039/a905962h

Cited by 98 publications

(67 citation statements)

References 25 publications

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“…The smaller unit cell dimension is primarily due to the change in the Mn oxidation state. Despite the replacement of a fraction of Mn ions by bigger Ni 2+ ions, the Mn valence change effect prevails [5]. Recently, Strobel et al [6] suggested that the occurrence of cation ordering corresponds to the largest valence difference ΔZ (Mn−M)≥2.…”

Section: Resultsmentioning

confidence: 99%

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Structure and insertion properties of disordered and ordered LiNi0.5Mn1.5O4 spinels prepared by wet chemistry

Amdouni

Zaghib

Giligny

et al. 2006

Ionics

211

174

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We present the synthesis, characterization, and electrode behavior of LiNi 0.5 Mn 1.5 O 4 spinels prepared by the wet-chemical method via citrate precursors. The phase evolution was studied as a function of nickel substitution and upon intercalation and deintercalation of Li ions. Characterization methods include X-ray diffraction, SEM, Raman, Fourier transform infrared, superconducting quantum interference device, and electron spin resonance.

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Section: Resultsmentioning

confidence: 99%

“…Blasse [38] has shown the ferromagnetic spin alignment below 130 K in LiNi 0.5 Mn 1.5 O 4 . Strobel et al [5] found a large increase in the magnetic susceptibility at low temperature, starting at ca. 120 K on cooling.…”

Section: Raman and Ftir Studiesmentioning

confidence: 96%

Structure and insertion properties of disordered and ordered LiNi0.5Mn1.5O4 spinels prepared by wet chemistry

Amdouni

Zaghib

Giligny

et al. 2006

Ionics

211

174

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“…Based on this scenario, it has been pursued to obtain enhanced energy and power densities by increasing the operating voltage of spinel cathode materials, while maintaining the excellent rate capability resulting from the three dimensional diffusion of lithium ions in the lattice. In this sense, the cation substitution in LiMn 2-x M x O 4 spinel oxide (M = Cr, Co, Fe, and Ni) is the effective way because they can deliver the capacity around a flat operating voltage of ~5 V. 2,3 Among the various 5 V spinel cathodes, LiMn 1.5 Ni 0.5 O 4 (LMNO) has been attracted due to its high capacity resulting from the operation of Ni 2+/3+ and Ni…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Electrochemical Performance of Reduced Graphene Oxide/AlPO₄-coated LiMn_1.5Ni_0.5O₄for Lithium-ion Batteries

Hur¹,

Kim²

2014

Bulletin of the Korean Chemical Society

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The reduced graphene oxide(rGO)/aluminum phosphate(AlPO 4 )-coated LiMn 1.5 Ni 0.5 O 4 (LMNO) cathode material has been developed by hydroxide precursor method for LMNO and by a facile solution based process for the coating with GO/AlPO 4 on the surface of LMNO, followed by annealing process. The amount of AlPO 4 has been varied from 0.5 wt % to 1.0 wt %, while the amount of rGO is maintained at 1.0 wt %. The samples have been characterized by X-ray diffraction, scanning electron microscopy, and high-resolution transmission electron microscopy. The rGO/AlPO 4 -coated LMNO electrodes exhibit better cyclic performance compared to that of pristine LMNO electrode. Specifically, rGO(1%)/AlPO 4 (0.5%)-and rGO(1%)/AlPO 4 (1%)-coated electrodes deliver a discharge capacity of, respectively, 123 mAh g −1 and 122 mAh g −1 at C/6 rate, with a capacity retention of, respectively, 96% and 98% at 100 cycles. Furthermore, the surface-modified LMNO electrodes demonstrate higher-rate capability. The rGO(1%)/AlPO 4 (0.5%)-coated LMNO electrode shows the highest rate performance demonstrating a capacity retention of 91% at 10 C rate. The enhanced electrochemical performance can be attributed to (1) the suppression of the direct contact of electrode surface with the electrolyte, resulting in side reactions with the electrolyte due to the high cut-off voltage, and (2) smaller surface resistance and charge transfer resistance, which is confirmed by total polarization resistance and electrochemical impedance spectroscopy.

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“…Even in the x = 1 case (50 % Mn dilution), the frustration remains, probably because the substitution is random. In Li(Mn 1.5 M 0.5 )O 4 compositions with other magnetic as well as non-magnetic M substituents, the Weiss constants are less negative than in unsubstituted LiMn 2 O 4 , and cation ordering, which has been shown to occur for M = Mg, Ni or Cu [12], does not suppress the frustration either [13]. The M = Ni case shows particularly strong magnetic interactions starting at 120 K resembling the ferrimagnetic behaviour previously observed in NiMn 2 O 4 [14].…”

Section: Magnetism In Manganese Compounds With Intermediate Anglesmentioning

confidence: 96%

Crystal chemistry of non‐perovskite manganese oxides – implications for magnetic properties

Strobel¹,

Ibarra-Palos²,

Pernet³

et al. 2004

phys. stat. sol. (c)

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Structural, magnetic and lithium insertion properties of spinel-type Li2Mn3MO8 oxides (M = Mg, Co, Ni, Cu)

Cited by 98 publications

References 25 publications

Structure and insertion properties of disordered and ordered LiNi0.5Mn1.5O4 spinels prepared by wet chemistry

Structure and insertion properties of disordered and ordered LiNi0.5Mn1.5O4 spinels prepared by wet chemistry

Synthesis and Electrochemical Performance of Reduced Graphene Oxide/AlPO₄-coated LiMn_1.5Ni_0.5O₄for Lithium-ion Batteries

Crystal chemistry of non‐perovskite manganese oxides – implications for magnetic properties

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Structural, magnetic and lithium insertion properties of spinel-type Li2Mn3MO8 oxides (M = Mg, Co, Ni, Cu)

Cited by 98 publications

References 25 publications

Structure and insertion properties of disordered and ordered LiNi0.5Mn1.5O4 spinels prepared by wet chemistry

Structure and insertion properties of disordered and ordered LiNi0.5Mn1.5O4 spinels prepared by wet chemistry

Synthesis and Electrochemical Performance of Reduced Graphene Oxide/AlPO4-coated LiMn1.5Ni0.5O4for Lithium-ion Batteries

Crystal chemistry of non‐perovskite manganese oxides – implications for magnetic properties

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Synthesis and Electrochemical Performance of Reduced Graphene Oxide/AlPO₄-coated LiMn_1.5Ni_0.5O₄for Lithium-ion Batteries