Effects of sintering temperature on the structure and electrochemical performance of Mg2SiO4 cathode materials

Tamin, S. H.; Adnan, S.B.R.S.; Jaafar, Mohd Hilmi; Mohamed, N. S.

doi:10.1007/s11581-017-2391-4

Cited by 14 publications

(4 citation statements)

References 35 publications

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“…C-O bonds specific for calcium silicates are demonstrated by the peaks at 873 and 707 cm −1 . Mg-O vibration octahedra cause a strong peak at 502 cm −1 [ 42 , 43 , 44 ]. Furthermore, the vibrational characteristic of the hydroxyl groups is represented by bands at 1600 to 1450 cm −1 , and 3641 cm −1 [ 45 ].…”

Section: Resultsmentioning

confidence: 99%

Determination of Mechanical Properties of Epoxy Composite Materials Reinforced with Silicate Nanofillers Using Digital Image Correlation (DIC)

Jelić¹,

Sekulić

Travica

et al. 2022

Polymers

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In this study, silicate nanofillers; dicalcium silicate, magnesium silicate, tricalcium silicate, and wollastonite; were synthesized using four different methods and incorporated into the epoxy resin to improve its mechanical properties. Characterization of the newly synthesized nanofillers was performed using Fourier-transformation infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The purpose of this study was to analyze newly developed composite materials reinforced with silicate nanoparticles utilizing tensile testing and a full-field non-contact 3D Digital Image Correlation (DIC) method. Analysis of deformation and displacement fields gives precise material behavior during testing. Testing results allowed a more reliable assessment of the structural integrity of epoxy composite materials reinforced using different silicate nanofillers. It was concluded that the addition of 3% of dicalcium silicate, magnesium silicate, tricalcium silicate, and wollastonite lead to the increasement of tensile strength up to 31.5%, 29.0%, 27.5%, and 23.5% in comparison with neat epoxy, respectively. In order to offer more trustworthy information about the viscoelastic behavior of neat epoxy and composites, a dynamic mechanical analysis (DMA) was also performed and rheological measurements of uncured epoxy matrix and epoxy suspensions were obtained.

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Section: Resultsmentioning

confidence: 99%

Determination of Mechanical Properties of Epoxy Composite Materials Reinforced with Silicate Nanofillers Using Digital Image Correlation (DIC)

Jelić¹,

Sekulić

Travica

et al. 2022

Polymers

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“…As the molar ratio of Mg increases, characteristic 41 After the acid treatment and washing process, we found that the crystalline peaks for MgO and NaCl completely disappeared, while the Mg 2 SiO 4 peak still existed (Figure 2b), indicating that Mg 2 SiO 4 was not completely removed during the acid treatment. 42,43 Moreover, we estimated the crystallite size of Si nanocrystals in the D-SiO x -M composites based on the Scherrer equation with the full width at halfmaximum (FWHM) values of the strong peaks in the XRD patterns (Figure S2). The estimated size of the Si crystallite in the D-SiO x -0.9 composite was estimated to be approximately 78 nm, which is much larger than that of the D-SiO x -0.5 composite (approximately 33 nm).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Swelling-Controlled Double-Layered SiO_x/Mg₂SiO₄/SiO_x Composite with Enhanced Initial Coulombic Efficiency for Lithium-Ion Battery

Raza

Jung

Lee

et al. 2021

ACS Appl. Mater. Interfaces

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Si-based anode materials are considered as potential materials for high-energy lithium-ion batteries (LIBs) with the advantages of high specific capacities and low operating voltages. However, significant initial capacity loss and large volume variations during cycles are the primary restrictions for the practical application of Si-based anodes. Herein, we propose an affordable and scalable synthesis of double-layered SiO x /Mg2SiO4/SiO x composites through the magnesiothermic reduction of micro-sized SiO with Mg metal powder at 750 °C for 2 h. The distinctive morphology and microstructure of the double-layered SiO x /Mg2SiO4/SiO x composite are beneficial as they remarkably improve the reversibility in the first cycle and completely suppress the volume variations during cycling. In our material design, the outermost layer with a highly porous SiO x structure provides abundant active sites by securing a pathway for efficient access to electrons and electrolytes. The inner layer of Mg2SiO4 can constrain the large volume expansion to increase the initial Coulombic efficiency (ICE). Owing to these promising structural features, the composite prepared with a 2:1 molar ratio of SiO to Mg exhibited initial charge and discharge capacities of 1826 and 1381 mA h g–1, respectively, with an ICE of 75.6%. Moreover, it showed a stable cycle performance, maintaining high capacity retention of up to >86.0% even after 300 cycles. The proposed approach provides practical insight into the mass production of advanced anode materials for high-energy LIBs.

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“…Due to the importance of Mg 2 SiO 4 powders, many methods have been used for their preparation, including the solid-state method [9,10], the sol-gel method [2,11,12], mechanochemical synthesis [13], the spray drying method [14], and the spray pyrolysis method [15]. Although many synthesis methods were proposed, the main problem of phase segregation still existed.…”

Section: Introductionmentioning

confidence: 99%

Morphology Evolution of Mg2SiO4 Particles Synthesized by Spray Pyrolysis from Precursor Solution

et al. 2023

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Forsterite (Mg2SiO4) materials have been used in the industrial applications of refractory materials, bone grafting materials, and microwave dielectric materials. In order to avoid the formation of the secondary phase of MgO or MgSiO3, spray pyrolysis with the precursors of magnesium nitrate hydrate and tetraethyl orthosilicate has been applied to synthesized Mg2SiO4 powders. In this study, three typical morphologies of smooth solid sphere, rough hollow sphere, and concaved hollow sphere were observed using scanning electron microscopy and transmission electron microscopy. The experimental results suggested that morphology and particle size distribution are strongly influenced by the calcination temperature. Finally, the corresponding powder formation mechanisms were proposed and discussed.

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Effects of sintering temperature on the structure and electrochemical performance of Mg2SiO4 cathode materials

Cited by 14 publications

References 35 publications

Determination of Mechanical Properties of Epoxy Composite Materials Reinforced with Silicate Nanofillers Using Digital Image Correlation (DIC)

Determination of Mechanical Properties of Epoxy Composite Materials Reinforced with Silicate Nanofillers Using Digital Image Correlation (DIC)

Swelling-Controlled Double-Layered SiO_x/Mg₂SiO₄/SiO_x Composite with Enhanced Initial Coulombic Efficiency for Lithium-Ion Battery

Morphology Evolution of Mg2SiO4 Particles Synthesized by Spray Pyrolysis from Precursor Solution

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Effects of sintering temperature on the structure and electrochemical performance of Mg2SiO4 cathode materials

Cited by 14 publications

References 35 publications

Determination of Mechanical Properties of Epoxy Composite Materials Reinforced with Silicate Nanofillers Using Digital Image Correlation (DIC)

Determination of Mechanical Properties of Epoxy Composite Materials Reinforced with Silicate Nanofillers Using Digital Image Correlation (DIC)

Swelling-Controlled Double-Layered SiOx/Mg2SiO4/SiOx Composite with Enhanced Initial Coulombic Efficiency for Lithium-Ion Battery

Morphology Evolution of Mg2SiO4 Particles Synthesized by Spray Pyrolysis from Precursor Solution

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Swelling-Controlled Double-Layered SiO_x/Mg₂SiO₄/SiO_x Composite with Enhanced Initial Coulombic Efficiency for Lithium-Ion Battery