Preparation of LiMn2O4 nanoparticles for Li ion secondary batteries by laser ablation in water

Tsuji, Takeshi; Tatsuyama, Yuuichi; Tsuji, Masaharu; Ishida, Kenta; Okada, Shigeto; Yamaki, Jun‐ichi

doi:10.1016/j.matlet.2006.08.016

Cited by 20 publications

(9 citation statements)

References 17 publications

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“…Besides size and stability, the elemental composition of nanomagnets is important for their potential applications because it determines their magnetic behavior. It has been reported that nanoparticles produced during pulsed laser ablation of an alloy may have the same elemental composition as the bulk material whereas the phase separation of alloys depends on the laser pulse duration and vapor pressure of each element …”

Section: Resultsmentioning

confidence: 99%

Magnetic Alloy Nanoparticles from Laser Ablation in Cyclopentanone and Their Embedding into a Photoresist

et al. 2010

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The generation of nonoxidized magnetic alloy nanoparticles is still a challenge using conventional chemical reduction methods. However, because these nanoparticles are currently attracting much attention, alternative methods are required. In this context, the applicability of femtosecond laser ablation, which has evolved as a powerful tool for the generation of colloidal metal nanoparticles, has been investigated using the example of Ni(48)Fe(52) and Sm(2)Co(17) ablation in cyclopentanone. Besides stability and size measurements, the focus has been placed on the analysis of the elemental composition of nanoparticles, which proved the preservation of the stoichiometry of the target in Ni-Fe nanoparticles but not in Sm-Co. It is assumed that this is due to a greater difference in the heat of evaporation of the bulk alloy components in Sm-Co than in Ni-Fe. Hence, the successful generation of magnetic alloy nanoparticles is possible for alloys composed of elements with similar heats of evaporation. This one-step approach allows the fabrication of nanomagnetic polymer composites (e.g., with application prospects in microtechnology such as microactuators).

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Section: Resultsmentioning

confidence: 99%

Magnetic Alloy Nanoparticles from Laser Ablation in Cyclopentanone and Their Embedding into a Photoresist

et al. 2010

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“…Tsuji et al [ 3 ] published a study on the synthesis of spinel-type Co 3 O 4 NPs by UV laser irradiation of Co, CoO, and Co 3 O 4 microparticles suspended in water. In a follow-up study, the same group [ 4 ] demonstrated the synthesis of NPs of the mixed oxide spinel LiMn 2 O 4 via a similar approach using IR laser irradiation. Relvas et al [ 5 ] and Du et al [ 6 ] generated photoluminescent NPs in suspension using LAL of doped mixed oxide spinels.…”

Section: Introductionmentioning

confidence: 99%

Laser Ablation of NiFe2O4 and CoFe2O4 Nanoparticles

et al. 2022

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Pulsed laser ablation in liquids was utilized to prepare NiFe2O4 (NFO) and CoFe2O4 (CFO) nanoparticles from ceramic targets. The morphology, crystallinity, composition, and particle size distribution of the colloids were investigated. We were able to identify decomposition products formed during the laser ablation process in water. Attempts to fractionate the nanoparticles using the high-gradient magnetic separation method were performed. The nanoparticles with crystallite sizes in the range of 5–100 nm possess superparamagnetic behavior and approximately 20 Am2/kg magnetization at room temperature. Their ability to absorb light in the visible range makes them potential candidates for catalysis applications in chemical reactions and in biomedicine.

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“…Significant improvements of the battery performance can be realized with using nanomaterials for the design of the "active" energy storage component of the battery electrodes, these improvements should be adjudicated to the following reasons: a) shorter diffusion (lithium-ion travels from the particle's nucleus to the surface where it transfers its charge to the electrolyte) [4], b) greater electrode-electrolyte contact area [5][6] (arising from the high surface areas inherently of the nanoparticles). Reducing the size of the electrode particles in the nanoscale regime could also substantially reduce the mechanical stresses caused in the crystalline structure by the expansion and the volumetric shrinkage during charging and discharging [7][8][9]. Also some processing advantages can also be achieved while working with nano-materials as lithium-ion storage electrode components.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of lithiated nanostructures

Brusilovsky

Cabello

2018

Matéria (Rio J.)

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Regardless of the simple accumulation of ions in the crystal insertion sites, nanomaterials offer a new storage mechanism of lithium ions (Li + ), these storage mechanisms are formed in the interfaces and inside of the nanopores. Such kinds of storage mechanisms have no effect on the structure of the electrode material. Consequently, the charge-discharge process can continue for prolonged times. Note that singular novel nanomaterials can be developed in various shapes (rods, plates, tubes, particles, etc.) and dimensions (e.g. 0D, 1D, 2D, 3D). Each of these different possibilities of shapes and dimensions offers its specific advantages and disadvantages. Therefore, a large variety of morphological structures offering increased quantity and availability of storage sites for Li + could be designed.In this work nanoparticles of lithiated oxide of transition metals have been synthesized and characterized. The synthesis of crystalline nanostructures generally requires a heat treatment, which involves controlled synthesis conditions. The synthesis of nanoparticles was based on the non-hydrolytic sol-gel method, considering acetates as chemical precursors. This approach presents an alternative to the usual sol-gel hydrolytic routes. Non hydrolytic methods in particular lead to improved control over the homogeneity and stoichiomtry level for multiple oxides components. The crystal structure of the nanocrystals was determined by X-ray diffraction (XRD). The morphology, the size and the composition of the particles were analyzed by using a scanning electron microscope equipped with a microprobe for energy dispersive X-ray spectroscopy.

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Preparation of LiMn2O4 nanoparticles for Li ion secondary batteries by laser ablation in water

Cited by 20 publications

References 17 publications

Magnetic Alloy Nanoparticles from Laser Ablation in Cyclopentanone and Their Embedding into a Photoresist

Magnetic Alloy Nanoparticles from Laser Ablation in Cyclopentanone and Their Embedding into a Photoresist

Laser Ablation of NiFe2O4 and CoFe2O4 Nanoparticles

Synthesis and characterization of lithiated nanostructures

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