Pitch-based carbon/nano-silicon composites are proposed as a high performance and realistic electrode material of Li-ion battery anodes. Composites are prepared in a simple way by the pyrolysis under argon atmosphere of silicon nanoparticles, obtained by a laser pyrolysis technique, and a low cost carbon source: petroleum pitch. The effect of ...
Silicon (Si) is a promising negative electrode material for lithium-ion batteries (LIBs), but the poor cycling stability hinders their practical application. Developing favorable Si nanomaterials i...
The silicon-based negative electrode materials prepared through alloying exhibit significantly enhanced electrode conductivity and rate performance, demonstrating excellent electrochemical lithium storage capability. Ren employed the magnesium thermal reduction method to prepare mesoporous Si-based nanoparticles doped with Zn .
We have developed a method which is adaptable and straightforward for the production of a negative electrode material based on Si/carbon nanotube (Si/CNTs) composite for Li-ion batteries.
The performance of the synthesized composite as an active negative electrode material in Li ion battery has been studied. It has been shown through SEM as well as impedance analyses that the enhancement of charge transfer resistance, after 100 cycles, becomes limited due to the presence of CNT network in the Si-decorated CNT composite.
Subsequently, the nanoscaling silicon will be alloyed and composited , , to effectively improve the poor conductivity and electrode structural instability issues in the silicon negative electrode.
Inspired by the possibilities of value-added of this raw material, we propose the facile preparation of silicon/carbon nanocomposites using carbon-coated silicon nanoparticles (<100 nm) and a petroleum pitch as anode materials for Li-ion batteries.
Pitch-based carbon/nano-silicon composites are proposed as a high performance and realistic electrode material of Li-ion battery anodes. Composites are prepared in a simple way by the pyrolysis under argon atmosphere of silicon nanoparticles, obtained by a laser pyrolysis technique, and a low cost carbon source: petroleum pitch. The effect of ...
Various strategies have been designed to synthesize silicon/carbon composites for tackling the issues of anode pulverization and poor stability in the anodes, thereby improving the lithium storage ability. The effect of the regulation method at each scale on the final negative electrode performance remains unclear. However, it has not been ...
Silicon-carbon materials have broad development prospects as negative electrode materials for lithium-ion batteries. In this paper, polyvinyl butyral (PVB)-based carbon-coated silicon (Si/C) composite materials were prepared using PVB-coated Si particles and then high-temperature carbonization methods. Furthermore, the PVB-based carbon-coated ...
The silicon-based negative electrode materials prepared through alloying exhibit significantly enhanced electrode conductivity and rate performance, demonstrating excellent …
Silicon oxide (SiOx) anode materials have gained significant attention in lithium-ion batteries due to their high theoretical specific capacity (above 1965 mAh g−1), relatively stable cycling performance, and lower production costs. However, SiOx anode materials tend to form a solid electrolyte interphase (SEI) film and generate inert substances like Li2O and Li4SiO4 …
The silicon-based negative electrode materials prepared through alloying exhibit significantly enhanced electrode conductivity and rate performance, demonstrating excellent electrochemical lithium storage capability. Ren employed the magnesium thermal reduction method to prepare mesoporous Si-based nanoparticles doped with Zn [22].
Pitch-based carbon/nano-silicon composites are proposed as a high performance and realistic electrode material of Li-ion battery anodes. Composites are prepared in a simple way by the pyrolysis under argon …
Silicon (Si) is a promising negative electrode material for lithium-ion batteries (LIBs), but the poor cycling stability hinders their practical application. Developing favorable Si nanomaterials is expected to improve …
In this study, two-electrode batteries were prepared using Si/CNF/rGO and Si/rGO composite materials as negative electrode active materials for LIBs. To test the …
In this study, two-electrode batteries were prepared using Si/CNF/rGO and Si/rGO composite materials as negative electrode active materials for LIBs. To test the electrodes and...
This review focuses on the use and preparation of carbon materials to enhance the performance of Si materials, giving a detailed description of one-dimensional (1D) carbon nanofibers (CNFs) and nanotubes (CNTs), two-dimensional (2D) graphene (G) sheets and transition metal carbides and carbonitrides (referred to as MXenes), and three-dimensional …
The Si@C/G composite material incorporates carbon-coated Si nanoparticles evenly dispersed in a graphene sheet matrix, significantly enhancing the cyclability and electronic conductivity of the silicon-based negative electrode in lithium-ion batteries. The electrochemical performance test results reveal a high lithium storage capacity of 1259 ...
Silicon (Si) is a promising negative electrode material for lithium-ion batteries (LIBs), but the poor cycling stability hinders their practical application. Developing favorable Si nanomaterials is expected to improve their cyclability. Herein, a controllable and facile electrolysis route to prepare Si nanotubes (SNTs), Si nanowires (SNWs ...
To resolve the problems existing in the foregoing silicon-carbon negative electrode material, the present invention provides a silicon-carbon negative electrode material for a...
Pure silicon negative electrodes have huge volume expansion effects and SEI membranes (solid electrolyte interface) are easily damaged. Therefore, researchers have …
The limitations in potential for the electroactive material of the negative electrode are less important than in the past thanks to the advent of 5 V electrode materials for the cathode in lithium-cell batteries. However, to maintain cell voltage, a deep study of new electrolyte–solvent combinations is required.
In order to overcome the above mentioned problems dab-like defined silicon was synthesized by reaction of silicon tetrachloride using magnesium powder [44].After 100 cycles, Li showed a reversible competence of 1125 mA h g −1 at 1 A g −1.The polymers of conducting properties have also been used as electrode supplies due to their flexibility, …
To examine the electrochemical performance of the materials synthesized as negative electrodes for LIBs, composite electrodes were prepared using poly(acrylic)acid (PAA) as the binder and commercial organic electrolyte.
The invention discloses a silicon-carbon negative electrode material for a lithium-ion battery and a preparation method of the silicon-carbon negative electrode material. …
The invention discloses a silicon-carbon negative electrode material for a lithium-ion battery and a preparation method of the silicon-carbon negative electrode material. The method comprises the steps of processing powdered carbon in a granulating manner to obtain carbon micropowder of which the bore diameters are 0.01-100 microns; adding the ...
Pure silicon negative electrodes have huge volume expansion effects and SEI membranes (solid electrolyte interface) are easily damaged. Therefore, researchers have improved the performance of negative electrode materials through silicon-carbon composites. This article introduces the current design ideas of ultra-fine silicon structure for ...
We have developed a method which is adaptable and straightforward for the production of a negative electrode material based on Si/carbon nanotube (Si/CNTs) composite …
In order to solve the energy crisis, energy storage technology needs to be continuously developed. As an energy storage device, the battery is more widely used. At present, most electric vehicles are driven by lithium-ion batteries, so higher requirements are put forward for the capacity and cycle life of lithium-ion batteries. Silicon with a capacity of 3579 mAh·g−1 …
To examine the electrochemical performance of the materials synthesized as negative electrodes for LIBs, composite electrodes were prepared using poly(acrylic)acid …
Silicon (Si) is recognized as a promising candidate for next-generation lithium-ion batteries (LIBs) owing to its high theoretical specific capacity (~4200 mAh g−1), low working potential (<0.4 V vs. Li/Li+), and …
The current state-of-the-art negative electrode technology of lithium-ion batteries (LIBs) is carbon-based (i.e., synthetic graphite and natural graphite) and represents >95% of the negative electrode market [1].Market demand is strongly acting on LIB manufacturers to increase the specific energy and reduce the cost of their products [2].
We have developed a method which is adaptable and straightforward for the production of a negative electrode material based on Si/carbon nanotube (Si/CNTs) composite for Li-ion batteries.
The Si@C/G composite material incorporates carbon-coated Si nanoparticles evenly dispersed in a graphene sheet matrix, significantly enhancing the cyclability and …
As silicon–carbon electrodes with low silicon ratio are the negative electrode foreseen by battery manufacturers for the next generation of Li-ion batteries, a great effort has to be made to improve their efficiency and …
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