Defective graphene decorated with TiO2 nanoparticles as negative electrode in Li-ion batteries

Sidoli, Michele; Magnani, Giacomo; Fornasini, Laura; Scaravonati, Silvio; Morenghi, Alberto; Vezzoni, V.; Bersani, Danilo; Bertoni, Giovanni; Gaboardi, Mattia; Riccò, Mauro; Pontiroli, Daniele

doi:10.1016/j.jallcom.2023.170420

Cited by 6 publications

(4 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When graphene is attached to TiO 2 nanoparticles, it creates channels for electron transport that increase electrical conductivity and overcome TiO 2 's internal resistance. Additionally, by acting as barrier layers, these conductive boundaries safeguard the TiO 2 from the electrolyte, resulting in better stability of the active materials and reduced parasitic electrolyte consumption [53,54].…”

Section: Tio 2 -Supported Carbon-based Nanocompositementioning

confidence: 99%

“…The excellent performance was credited to the tubular structure of TiO 2 and the good electronic properties of graphene. Sidoli et al [54] demonstrate the performance of new negative electrodes for Li-ion batteries based on defective graphene produced by scalable thermal exfoliation of graphite oxide and embellished with TiO 2 nanoparticles. After extensive and requiring cycling, the constructed composites show a reversible capacity of more than 180 mAh g −1 .…”

Section: Tio 2 -Based Nanocomposites As Anode Materialsmentioning

confidence: 99%

See 1 more Smart Citation

Titanium Dioxide-Based Nanocomposites: Properties, Synthesis, and Their Application in Energy Storage

Madima,

Khumalo,

Raphulu

2024

Nanotechnology and Nanomaterials

View full text Add to dashboard Cite

Energy storage technology is a valuable tool for storing and utilizing newly generated energy. Lithium-based batteries have proven to be effective energy storage units in various technological devices due to their high-energy density. However, a major obstacle to developing lithium-based battery technology is the lack of high-performance electrode materials with a long lifespan, superior rate capability, and high safety standards. Thus, the rational design of highly reliable electrode materials is crucial when considering the development of high-performance lithium-based batteries for sustainable energy storage. As a result, titanium dioxide-based nanocomposites have gained a lot of interest as potential electrode materials for lithium-based batteries due to their unique properties such as structural characteristics, low cost, safety, and environmental friendliness. Therefore, this chapter gives an overview of the properties, preparation methods, and application of titanium dioxide-based nanocomposites as anode and cathode active materials for high-performance lithium-based batteries.

show abstract

Section: Tio 2 -Supported Carbon-based Nanocompositementioning

confidence: 99%

Section: Tio 2 -Based Nanocomposites As Anode Materialsmentioning

confidence: 99%

Titanium Dioxide-Based Nanocomposites: Properties, Synthesis, and Their Application in Energy Storage

Madima,

Khumalo,

Raphulu

2024

Nanotechnology and Nanomaterials

View full text Add to dashboard Cite

show abstract

“…Application of Graphene in Lithium-Ion Batteries DOI: http://dx.doi.org/10.5772/intechopen.114286 of possibilities for the modification and functionalization of its carbon backbone, such as chemical modification of H and O functional groups, so that its hydrophilic version of oxygen/hydrogen functionalization has recently gained popularity [85][86][87]. At present, the doping of heteroatoms into graphene to produce more Li + storage sites has been widely studied.…”

Section: Application Of Other Graphene Derivatives In Libsmentioning

confidence: 99%

Application of Graphene in Lithium-Ion Batteries

Qi,

Wang,

et al. 2024

Nanotechnology and Nanomaterials

View full text Add to dashboard Cite

Graphene has excellent conductivity, large specific surface area, high thermal conductivity, and sp2 hybridized carbon atomic plane. Because of these properties, graphene has shown great potential as a material for use in lithium-ion batteries (LIBs). One of its main advantages is its excellent electrical conductivity; graphene can be used as a conductive agent of electrode materials to improve the rate and cycle performance of batteries. It has a high surface area-to-volume ratio, which can increase the battery’s energy storage capacities as anode material, and it is highly flexible and can be used as a coating material on the electrodes of the battery to prevent the growth of lithium dendrites, which can cause short circuits and potentially lead to the battery catching fire or exploding. Furthermore, graphene oxide can be used as a binder material in the electrode to improve the mechanical stability and adhesion of the electrodes so as to increase the durability and lifespan of the battery. Overall, graphene has a lot of potential to improve the performance and safety of LIBs, making them a more reliable and efficient energy storage solution; the addition of graphene can greatly improve the performance of LIBs and enhance chemical stability, conductivity, capacity, and safety performance, and greatly enrich the application backgrounds of LIBs.

show abstract

“…A micro-scale slit structure is used as the primary component with the function of light filtering, collimation, and diffraction [ 1 , 2 , 3 , 4 ], and the slit width directly affects the sensitivity and resolution in the field of spectrometry [ 5 , 6 , 7 ]. The slits for optical applications are often several micrometers in width and tens of millimeters in length.…”

Section: Introductionmentioning

confidence: 99%

Fabricating Ultra-Narrow Precision Slit Structures with Periodically Reducing Current Over-Growth Electroforming

Yang,

Zhang,

Ming

et al. 2023

Micromachines

View full text Add to dashboard Cite

An ultra-narrow precision slit with a width of less than ten micrometers is the key structure of some optical components, but the fabrication of these structures is still very difficult to accomplish. To fabricate these slits, this paper proposed a periodically reducing current over-growth electroforming process. In the periodically reducing current over-growth electroforming, the electric current applied to the electrodeposition process is periodically stepped down rather than being constant. Simulations and experimentation studies were carried out to verify the feasibility of the proposed process, and further optimization of process parameters was implemented experimentally to achieve the desired ultra-narrow precision slits. The current values were: I1=Iinitial, I2=0.75Iinitial at Qc=0.5Qt, I3=0.5Iinitial at Qc=0.75Qt,respectively. It was shown that, compared with conventional constant current over-growth electroforming, the proposed process can significantly improve the surface quality and geometrical accuracy of the fabricated slits and can markedly enhance the achievement of the formed ultra-narrow slits. With the proposed process, slits with a width of down to 5 ± 0.1 μm and a surface roughness of less than 62.8 nm can be easily achieved. This can improve the determination sensitivity and linear range of the calibration curves of spectral imagers and food and chemical analysis instruments. Periodically reducing current over-growth electroforming is effective and advantageous in fabricating ultra-narrow precision slits.

show abstract

Defective graphene decorated with TiO2 nanoparticles as negative electrode in Li-ion batteries

Cited by 6 publications

References 56 publications

Titanium Dioxide-Based Nanocomposites: Properties, Synthesis, and Their Application in Energy Storage

Titanium Dioxide-Based Nanocomposites: Properties, Synthesis, and Their Application in Energy Storage

Application of Graphene in Lithium-Ion Batteries

Fabricating Ultra-Narrow Precision Slit Structures with Periodically Reducing Current Over-Growth Electroforming

Contact Info

Product

Resources

About