Sphere-like MoS2 and porous TiO2 composite film on Ti foil as lithium-ion battery anode synthesized by plasma electrolytic oxidation and magnetron sputtering

Sun, Menglu; Wu, Jie; Lü, Ping; Zhang, Zhonghua; Zhang, Yifan; Li, Dejun

doi:10.1016/j.jallcom.2021.162075

Cited by 14 publications

(4 citation statements)

References 48 publications

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“…At the same time, collapse and ionization occurred in the gas bubbles, initiating the continuous plasma micro-discharge inside the bubbles, which triggered the inelastic collision and electron avalanche; then the electrolyte entered the discharge stage ( Figure 1 (DE region), Figure 2 e). The breakdown initially occurred at the weakest dielectric layer point, where the dopants and defects, termed “flaws” (such as micro-fissures, cracks, local regions of different compositions, and impurities), were located [ 15 , 16 , 17 , 18 , 19 , 20 ].…”

Section: Resultsmentioning

confidence: 99%

Discharge Characteristics, Plasma Electrolytic Oxidation Mechanism and Properties of ZrO2 Membranes in K2ZrF6 Electrolyte

Wang

et al. 2022

Membranes

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ZrO2 was coated on AZ31 magnesium alloy substrate by plasma electrolytic oxidation with K2ZrF6 and NaH2PO4 electrolytes. The discharge characteristics and variation in active species during the plasma electrolytic oxidation (PEO) process were studied by optical emission spectroscopy. The surface morphology and element composition of the membranes were observed by scanning electron microscope. The ion transfer of the substrate was studied by atomic absorption spectroscopy. The phase composition and corrosion characteristics of the PEO membranes were examined with XRD and an electrochemical workstation, respectively. The heat and mass transfer models during the PEO process were introduced. The contributions of ions to the membranes and active species were also analyzed. The results indicated that the ion transfer at different stages exhibits different tendencies. At the first and transition stages, the migration resistance of the ions was low and increased gradually. At the initial discharge stage, the migration resistance was the highest because the highest membrane growth rate occurred at this stage. At the later discharge stage, the migration resistance tends to be stable, which is ascribed to a dynamic equilibrium PEO membrane growth rate. The intensity of active species is related to the energy state of the working electrode’s surface. The higher the energy, the greater the probability that the active species will be excited to generate energy level transitions, and the higher the plasma concentration.

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Section: Resultsmentioning

confidence: 99%

Discharge Characteristics, Plasma Electrolytic Oxidation Mechanism and Properties of ZrO2 Membranes in K2ZrF6 Electrolyte

Wang

et al. 2022

Membranes

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“…Ion Beam Deposition [378,[413][414][415][416] Using ion-beam deposition to create a thin layer of carbon on a material surface Magnetron sputtering [417][418][419][420][421][422] Using magnetron sputtering of carbon to create a film on the material surface Vacuum cathode discharge [360,416] Using vacuum cathodic discharge to create a thin layer of carbon on the material surface…”

Section: Physical Deposition Methodsmentioning

confidence: 99%

Carbon nanotubes: revolutionizing construction materials for a sustainable future: A review

Vafaeva,

Zegait

2023

Res. Eng. Struct. Mat.

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This review article explores the use of carbon nanotubes (CNTs) as material enhancers in construction and their advantages. It emphasizes ongoing research to gather accurate data on CNT-enhanced material properties and their role in creating more efficient and stronger building materials. The various methods of obtaining and incorporating CNTs into building materials, including chemical vapor deposition and electric arc synthesis, are discussed. A comparative analysis of building materials with and without CNTs is presented to examine their characteristics. The article also discusses future prospects for CNTs in various industries. The study aims to investigate experimental methods for obtaining CNTs, their properties, and their introduction into building materials. The research methodology involves studying literature sources, analyzing experimental results, and examining the structural, mechanical, and electronic properties of CNTs. Analytical methods based on scientific articles and publications related to CNTs in construction were used to ensure the article's reliability, validity, completeness, and objectivity. The research highlights CNTs' potential as material enhancers in construction, owing to their unique mechanical properties, such as high strength, stiffness, and corrosion resistance. Specific studies demonstrating the use of CNTs to increase the strength of concrete and other construction materials are provided, indicating the promising application of CNTs in future construction projects. However, technical challenges must be addressed, and appropriate standards and regulations should be developed before practical implementation.

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“…Several types of composite electrodes for batteries with improved performance characteristics were obtained by plasma electrolytic oxidation of valve group metals, in particular Ti [ 18 , 19 ]. In works [ 20 , 21 , 22 ], methods for ensuring the high quality of such composites and ways to optimize the process of their production were studied.…”

Section: Introductionmentioning

confidence: 99%

Effect of Thermal Activation on the Structure and Electrochemical Properties of Carbon Material Obtained from Walnut Shells

Ivanichok,

Kolkovskyi,

Ivanichok

et al. 2024

Materials

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A simple activation method has been used to obtain porous carbon material from walnut shells. The effect of the activation duration at 400 °C in an atmosphere with limited air access on the structural, morphological, and electrochemical properties of the porous carbon material obtained from walnut shells has been studied. Moreover, the structure and morphology of the original and activated carbon samples have been characterized by SAXS, low-temperature adsorption porosimetry, SEM, and Raman spectroscopy. Therefore, the results indicate that increasing the duration of activation at a constant temperature results in a reduction in the thickness values of interplanar spacing (d002) in a range of 0.38–0.36 nm and lateral dimensions of the graphite crystallite from 3.79 to 2.52 nm. It has been demonstrated that thermal activation allows for an approximate doubling of the specific SBET surface area of the original carbon material and contributes to the development of its mesoporous structure, with a relative mesopore content of approximately 75–78% and an average pore diameter of about 5 nm. The fractal dimension of the obtained carbon materials was calculated using the Frenkel–Halsey–Hill method; it shows that its values for thermally activated samples (2.52, 2.69) are significantly higher than for the original sample (2.17). Thus, the porous carbon materials obtained were used to fabricate electrodes for electrochemical capacitors. Electrochemical investigations of these cells in a 6 M KOH aqueous electrolyte were conducted by cyclic voltammetry, galvanostatic charge/discharge, and impedance spectroscopy. Consequently, it was established that the carbon material activated at 400 °C for 2 h exhibits a specific capacity of approximately 110–130 F/g at a discharge current density ranging from 4 to 100 mA/g.

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Sphere-like MoS2 and porous TiO2 composite film on Ti foil as lithium-ion battery anode synthesized by plasma electrolytic oxidation and magnetron sputtering

Cited by 14 publications

References 48 publications

Discharge Characteristics, Plasma Electrolytic Oxidation Mechanism and Properties of ZrO2 Membranes in K2ZrF6 Electrolyte

Discharge Characteristics, Plasma Electrolytic Oxidation Mechanism and Properties of ZrO2 Membranes in K2ZrF6 Electrolyte

Carbon nanotubes: revolutionizing construction materials for a sustainable future: A review

Effect of Thermal Activation on the Structure and Electrochemical Properties of Carbon Material Obtained from Walnut Shells

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