Closing to Scaling-Up High Reversible Si/rGO Nanocomposite Anodes for Lithium Ion Batteries

Tokur, Mahmud; Algül, Hasan; Özcan, Şeyma; Çetinkaya, Tuğrul; Uysal, Mustafa; Akbulut, Hatem

doi:10.1016/j.electacta.2016.09.048

Cited by 27 publications

(26 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In contrast, for the SiRGO2 and SiRGO3 electrodes with a polymer binder, well-distinguishable peaks appear only in the second cycle and their intensity increases by the third cycle. The positions of the peaks are in good agreement with the literature data [16][17][18][19], according to which they can be attributed to the processes of insertion/extraction of lithium into silicon or RGO nanoparticles and to the SEI formation. Gradual appearance of the peaks on cycling (Fig.…”

Section: Cyclic Voltammetrysupporting

confidence: 89%

Influence of a binder on the electrochemical behaviour of Si/RGO composite as negative electrode material for Li-ion batteries

et al. 2021

View full text Add to dashboard Cite

A composite consisting of silicon nanoparticles and reduced graphene oxide nanosheets (Si/RGO) was studied as a promising material for the negative electrode of lithium-ion batteries. Commonly used polyvinylidene fluoride (PVdF) and carboxymethyl cellulose (CMC) served as a binder. To reveal the influence of the binder on the electrochemical behaviour of the Si/RGO composite, binder-free electrodes were also prepared and examined. Anode half-cells with composites comprising CMC as a binder demonstrated the best properties: capacity over 1200 mAh∙g-1, excellent cycling performance and good rate capability up to 1.0C.

show abstract

Section: Cyclic Voltammetrysupporting

confidence: 89%

Influence of a binder on the electrochemical behaviour of Si/RGO composite as negative electrode material for Li-ion batteries

et al. 2021

View full text Add to dashboard Cite

show abstract

“…However, increased capacity and energy density of Li-ion batteries is desired in order to store more, efficient energy. Although researchers have made significant progress in the development of high capacity anode electrodes, such as SnO 2 [ 2 ], Sn-Ni [ 3 ], and Si [ 4 ], the performance of cathodes has been bottlenecked by the energy density and capacity of Li-ion batteries. In commercial Li-ion batteries, LiCoO 2 , which has a specific capacity of 140 mAh/g, is used as the cathode material although it has many disadvantages such as high cost, toxicity and limited sources.…”

Section: Introductionmentioning

confidence: 99%

Freestanding graphene/MnO₂ cathodes for Li-ion batteries

Özcan¹,

Güler²,

Çetinkaya³

et al. 2017

Beilstein J. Nanotechnol.

Self Cite

View full text Add to dashboard Cite

Different polymorphs of MnO2 (α-, β-, and γ-) were produced by microwave hydrothermal synthesis, and graphene oxide (GO) nanosheets were prepared by oxidation of graphite using a modified Hummers’ method. Freestanding graphene/MnO2 cathodes were manufactured through a vacuum filtration process. The structure of the graphene/MnO2 nanocomposites was characterized using X-ray diffraction (XRD) and Raman spectroscopy. The surface and cross-sectional morphologies of freestanding cathodes were investigated by scanning electron microcopy (SEM). The charge–discharge profile of the cathodes was tested between 1.5 V and 4.5 V at a constant current of 0.1 mA cm−2 using CR2016 coin cells. The initial specific capacity of graphene/α-, β-, and γ-MnO2 freestanding cathodes was found to be 321 mAhg−1, 198 mAhg−1, and 251 mAhg−1, respectively. Finally, the graphene/α-MnO2 cathode displayed the best cycling performance due to the low charge transfer resistance and higher electrochemical reaction behavior. Graphene/α-MnO2 freestanding cathodes exhibited a specific capacity of 229 mAhg−1 after 200 cycles with 72% capacity retention.

show abstract

“…Graphene plays a flexible confinement function for tolerating volume changes to the composite in LIBs [ 120 – 122 ]. Since graphene has large surface area, high electrical conductivity and discharge capacity, it is an attractive carbon material to improve the electrochemical performance of the Si-based composite electrodes, leading to a more enhanced cycle ability at large current densities [ 123 – 125 ].…”

Section: Modification Of Silicon–carbon Anode Materialsmentioning

confidence: 99%

Solutions for the problems of silicon–carbon anode materials for lithium-ion batteries

Liu¹,

Zhu²,

Pan³

2018

R. Soc. open sci.

View full text Add to dashboard Cite

Lithium-ion batteries are widely used in various industries, such as portable electronic devices, mobile phones, new energy car batteries, etc., and show great potential for more demanding applications like electric vehicles. Among advanced anode materials applied to lithium-ion batteries, silicon–carbon anodes have been explored extensively due to their high capacity, good operation potential, environmental friendliness and high abundance. Silicon–carbon anodes have demonstrated great potential as an anode material for lithium-ion batteries because they have perfectly improved the problems that existed in silicon anodes, such as the particle pulverization, shedding and failures of electrochemical performance during lithiation and delithiation. However, there are still some problems, such as low first discharge efficiency, poor conductivity and poor cycling performance, which need to be improved. This paper mainly presents some methods for solving the existing problems of silicon–carbon anode materials through different perspectives.

show abstract

Closing to Scaling-Up High Reversible Si/rGO Nanocomposite Anodes for Lithium Ion Batteries

Cited by 27 publications

References 37 publications

Influence of a binder on the electrochemical behaviour of Si/RGO composite as negative electrode material for Li-ion batteries

Influence of a binder on the electrochemical behaviour of Si/RGO composite as negative electrode material for Li-ion batteries

Freestanding graphene/MnO₂ cathodes for Li-ion batteries

Solutions for the problems of silicon–carbon anode materials for lithium-ion batteries

Contact Info

Product

Resources

About

Closing to Scaling-Up High Reversible Si/rGO Nanocomposite Anodes for Lithium Ion Batteries

Cited by 27 publications

References 37 publications

Influence of a binder on the electrochemical behaviour of Si/RGO composite as negative electrode material for Li-ion batteries

Influence of a binder on the electrochemical behaviour of Si/RGO composite as negative electrode material for Li-ion batteries

Freestanding graphene/MnO2 cathodes for Li-ion batteries

Solutions for the problems of silicon–carbon anode materials for lithium-ion batteries

Contact Info

Product

Resources

About

Freestanding graphene/MnO₂ cathodes for Li-ion batteries