High capacity Si/DC/MWCNTs nanocomposite anode materials for lithium ion batteries

Zhou, Zhibin; Xu, Yunhua; Wang, Xinyang; Niu, Li-Bin

doi:10.1016/j.jallcom.2009.12.171

Cited by 39 publications

(22 citation statements)

References 28 publications

(26 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…9 In comparison with MWCNTs, graphene has far higher electronic conductivity, mechanical property and surface area (.2600 m 2 g 21 ). 10 When graphene is compounded with nanoparticles to produce anode materials for LIB, graphene stacking may be prevented due to the presence of these particles; on the other hand, electrically conductive graphene could accommodate the large volume change during Li insertion/extraction processes to maintain good electronic contact between nanoparticles and graphene.…”

mentioning

confidence: 99%

Controlled fabrication of Si nanoparticles on graphene sheets for Li-ion batteries

Zhu

et al. 2013

RSC Adv.

View full text Add to dashboard Cite

A new route is presented for the synthesis of Si nanoparticle/Graphene (Si-Gr) composite by a sonochemical method and then magnesiothermic reduction process. During the process, silica particles were firstly synthesized and deposited on the surface of graphene oxide (SiO2-GO) by ultrasonic waves, subsequent lowtemperature magnesiothermic reduction transformed SiO 2 to Si nanoparticles in situ on graphene sheets. The phase of the obtained materials was influenced by the weight ratio of Mg to SiO 2-GO. With the optimized ratio of 1 : 1, we can get Si nanoparticles on Gr sheets, with the average particle size of Si around 30 nm. Accordingly, the resultant Si-Gr with 78 wt% Si inside delivered a reversible capacity of 1100 mA h g-1, with very little fading when the charge rates change from 100 mA g-1 to 2000 mA g-1 and then back to 100 mA g-1. Thus, this strategy offers an efficient method for the controlled synthesis of Si nanoparticles on Gr sheets with a high rate performance, attributing to combination of the nanosized Si particles and the graphene. 2013 The Royal Society of Chemistry. . Thus, this strategy offers an efficient method for the controlled synthesis of Si nanoparticles on Gr sheets with a high rate performance, attributing to combination of the nanosized Si particles and the graphene.

show abstract

mentioning

confidence: 99%

Controlled fabrication of Si nanoparticles on graphene sheets for Li-ion batteries

Zhu

et al. 2013

RSC Adv.

View full text Add to dashboard Cite

show abstract

“…Porous structures including macroporosity, mesoporosity, microporosity, are listed in Table 1 [15,16,24,[38][39][40][41][42][43][44][45][46][47]. Microporous structures which size are below 2 nanometers, play an role of helping lithium-ion intercalation or deintercalation, while macroporous structures which size are above 50 nanometers, help the electrolyte storage as reservoir.…”

Section: Porous Structures Can Buffer the Volume Variationsmentioning

confidence: 99%

“…And, they can be in various structures, such as fibers, nanowires, nanobelts, nanotubes, porous structures, etc. [16,[38][39][40][41][42][43][44][45][46][47].…”

Section: Porous Structures Can Buffer the Volume Variationsmentioning

confidence: 99%

“…To improve the conductivity, some conductive agents are often used, including acetylene black, carbon black, polyaniline, carbon nanotubes [18,47,55,73]. Moreover, aluminum and tin are good candidates, which provide good electrical conductivity as well as high specific capacity, for their being active anode materials.…”

Section: The Conductive Agents Doped May Improve the Electrical Propementioning

confidence: 99%

“…Metallurgical-grade silicon, whose purity is about 98.5%, is usually prepared by reducing Crystalline-Amorphous Core-Shell Silicon Nanowires [43] Mesoporous Si@Carbon Core-Shell Nanowires [39] Silicon nanowire (HF-AgNO3 etching) [24] Carbon-Silicon Core-Shell Nanowires [44] silicon nanowires [15] 1000 nanofiber Carbon-fiber-silicon-nanocomposites [45] carbon-silicon composite nanofiber [46] 700 ~ 1240 ~ 20 cycles(0.1C) nanotube Nanoscale Si coating on pore-walls of SnO2 nanotube [16] Si DC MWCNTs nanocomposite [47] 1800-1600~90 cycles silica sand or quart with coke for metallurgy (shown in Reaction 1 …”

Section: Preparation Techniques For Silicon Materialsmentioning

confidence: 99%

See 2 more Smart Citations

The Development of Silicon Nanocomposite Materials for Li-Ion Secondary Batteries

Wang¹,

Chen²,

Lü³

2011

TOMSJ

View full text Add to dashboard Cite

Abstract:With the rapid progress and wide application of Li-ion batteries, commercial graphite anode can not satisfy the increasing demand for higher capacities. Like other anode materials with higher capacities, silicon materials as anodes remain serious problems for their large volume variations and poor cyclabilities during cycling. One of key problem is how to stabilize the performances of Si anode materials. Various influencing factors of volume variation of silicon anode materials have been reviewed, which consist of discharging voltage, amorphous or crystalline type, tube or pore microstructure, interlayer adhesion, buffering and protective layer materials and conductive agents. Another hot issue is on the preparation methods for silicon anode materials with high performance. It covers not only the technics of high purity silicon materials, including the predominant Siemens process of electronic-grade silicon, but also the techniques of silicon film anodes, which consists of butyl-capped silicon precursor, the template methods of nanostructure, magnetron sputtering, ball-milling. From the screening of existing silicon anode materials in the literatures, the preparation methods for promising Si anode materials and their prospects have been offered.

show abstract

Enhanced Electrochemical Performance of Si by CNF Material for Li-Ion Battery

Patel

Vanpariya

Mukhopadhyay

2023

Green Energy and Technology

View full text Add to dashboard Cite

High capacity Si/DC/MWCNTs nanocomposite anode materials for lithium ion batteries

Cited by 39 publications

References 28 publications

Controlled fabrication of Si nanoparticles on graphene sheets for Li-ion batteries

Controlled fabrication of Si nanoparticles on graphene sheets for Li-ion batteries

The Development of Silicon Nanocomposite Materials for Li-Ion Secondary Batteries

Enhanced Electrochemical Performance of Si by CNF Material for Li-Ion Battery

Contact Info

Product

Resources

About