Synthesis and electrochemical performance of modified LiMn2O4 by Zn2+ and PO43− co-substitution

Cui, Ping; Liang, Ying

doi:10.1016/j.ssi.2013.08.002

Cited by 8 publications

(2 citation statements)

References 20 publications

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“…At present, the more mature commercial cathode material for lithium-ion batteries is LiCoO 2 . Due to the low reserves and toxicity of Co resources, it cannot meet the market competition and large-scale commercial production [3][4] . Compared with LiCoO 2 , spinel LiMn 2 O 4 has the advantages of rich resources and environmental friendliness.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Properties of Spinel LiMn1.90 Ni0.05 Cu0.05 O4

Li,

Liu

2024

AJST

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Spinel LiMn2O4 and LiMn1.90Ni0.05 Cu0.05O4 cathode materials were synthesized by a simple solution combustion method. The structure, morphology and properties of the two samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), battery test system and electrochemical workstation. The results show that the two samples are spinel lithium manganate structure, which can be indexed as Fd3m space group. Ni Cu co doping effectively reduces the particle size and agglomeration, improves the crystallinity of the materials, and makes LiMn1.90Ni 0.05 Cu0.05O4 samples show good crystal structure stability and magnification properties. The capacity retention rates of 64.53%,79.52%and 69.47%were obtained after 1000 cycles at current densities of 1 C,5 C and 10 C,respectively, which were higher than 43.75%,55.74%and 44.38%of the corresponding undoped LiMn2O4 samples.

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Section: Introductionmentioning

confidence: 99%

Preparation and Properties of Spinel LiMn1.90 Ni0.05 Cu0.05 O4

Li,

Liu

2024

AJST

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“…In recent years, inspired by the PO 4 3– stabilized LiFePO 4 structure, researchers have investigated the doping modification of spinel structure with PO 4 3– . − For instance, Wang et al synthesized Li 1.017 Mn 1.97 O 4 (PO 4 ) 0.015 through the hydrothermal synthesis method. The introduction of large-size PO 4 3– increased the cell parameters of spinel LiMn 2 O 4 and enhanced its charge-transfer kinetics, achieving a high rate performance of electrode materials.…”

Section: Introductionmentioning

confidence: 99%