Highly conductive C-Si@G nanocomposite as a high-performance anode material for Li-ion batteries

Yi, Xu; Yu, Wanjing; Tsiamtsouri, Maria A.; Zhang, Fuqin; He, Wenjie; Dai, Qiongyu; Hu, Shiqing; Tong, Hengqing; Zheng, Junchao; Bao, Zhenan; Jiqiao, Liao

doi:10.1016/j.electacta.2018.11.020

Cited by 49 publications

(22 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From the fitting results ( Figure 5 b), the curve slopes k of SiO 2 , SiO 2 @Pc, and SiO 2 @Pc@Sn were 0.33, 0.20 and 0.07, respectively. The result showed that the diffusion coefficient of Li + was the largest in the SiO 2 @Pc @Sn composite according to the relation formula [ 21 ], D Li+ = A/ k , where, A is constant related to the Li ions content and electrode area, etc.…”

Section: Resultsmentioning

confidence: 99%

“…According to the working principle of LIBs, the electrode materials play a critical role in the further improvement of the battery performance [ 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 ]. High-capacity and low-cost materials have triggered vast interest in the past few years [ 15 , 16 , 17 , 18 , 19 , 20 , 21 ], which can bring great promise for next-generation LIBs with a higher price–performance ratio. Silica (SiO 2 ) has recently captured great attention as a promising candidate anode materials for LIBs because of its suitable working potential (~0.25 V vs. Li/Li + ), proper theoretical specific capacity (~1960 mAh·g −1 ), lesser volume variation (~100%), and expanded cycling lifespan compared to silicon and other alloys [ 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 ].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Enhanced Electrochemical Performance Promoted by Tin in Silica Anode Materials for Stable and High-Capacity Lithium-Ion Batteries

2021

View full text Add to dashboard Cite

Although the silicon oxide (SiO2) as an anode material shows potential and promise for lithium-ion batteries (LIBs), owing to its high capacity, low cost, abundance, and safety, severe capacity decay and sluggish charge transfer during the discharge–charge process has caused a serious challenge for available applications. Herein, a novel 3D porous silicon oxide@Pourous Carbon@Tin (SiO2@Pc@Sn) composite anode material was firstly designed and synthesized by freeze-drying and thermal-melting self-assembly, in which SiO2 microparticles were encapsulated in the porous carbon as well as Sn nanoballs being uniformly dispersed in the SiO2@Pc-like sesame seeds, effectively constructing a robust and conductive 3D porous Jujube cake-like architecture that is beneficial for fast ion transfer and high structural stability. Such a SiO2@Pc@Sn micro-nano hierarchical structure as a LIBs anode exhibits a large reversible specific capacity ~520 mAh·g−1, initial coulombic efficiency (ICE) ~52%, outstanding rate capability, and excellent cycling stability over 100 cycles. Furthermore, the phase evolution and underlying electrochemical mechanism during the charge–discharge process were further uncovered by cyclic voltammetry (CV) investigation.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhanced Electrochemical Performance Promoted by Tin in Silica Anode Materials for Stable and High-Capacity Lithium-Ion Batteries

2021

View full text Add to dashboard Cite

show abstract

“…The Warburg impedance is associated to the Warburg coefficient ( w ) which is obtained via the slope of the real part of the impedance (Z Re ) (in Figure 7c and 7d) versus inverse square root of the angular frequency (ω -0.5 , where ω=2πf) curves. The following equation provides this relationship: [41] . Accordingly, the  w is obtained via the slope of Z Re versus ω -0.5 curve as shown in Figure 7e, where a smaller slope is estimated for Si-GA-C-750 compared with Si-G-C-750.…”

Section: Electrochemical Characterisationsmentioning

confidence: 99%

Prompt microwave-assisted synthesis of carbon coated Si nanocomposites as anode for lithium-ion batteries

et al. 2020

View full text Add to dashboard Cite

Hard carbons derived from glucose and glucosamine are synthesized via microwave-assisted hydrothermal carbonization (HTC) and subsequent pyrolysis treatment to be used as anode materials for lithium-ion batteries (LIBs). Related to the limited lithium ion intercalation to graphite (LiC 6 ) resulting relatively low theoretical capacity (372 mAh/g), silicon is considered as one of the most appealing anode materials for LIBs by exhibiting very high theoretical capacity (3578 mAh/g, based on Li 15 Si 4 ).However, silicon suffers from huge volume expansion during intercalation of lithium ions which causes rapid capacity fading. One of the most practical strategy to suppress this problem is to coat the silicon nanoparticles with carbonaceous materials. Herein, silicon is coated via microwave-assisted hydrothermal carbonization method in the presence of glucose or glucosamine which are then further pyrolyzed at 750 °C to obtain silicon-carbon composite anodes. Composite containing glucosamine (Si-GA-C-750) enables N-doped carbon evidenced by EDX and XPS analyses which contributes to obtain much enhanced electrochemical properties than that of glucose containing composite (Si-G-C-750).Additionally, higher Li + diffusion coefficient and smaller resistance values attest the advantageous nature of the N-doped anode material.

show abstract

“…Lithium-sulfur (Li-S) battery, as an advanced energy-storage device, have caught increasing attention owning to its ultrahigh theoretical capacity, low cost and minimum safety issues [1]. But there are still hurdles hinders its performance, such as inferior conductivity, dissolution of polysulfides and the shuttle effect in liquid electrolyte [2].…”

Section: Introductionmentioning

confidence: 99%

Sucrose derived microporous–mesoporous carbon for advanced lithium–sulfur batteries

Wang

Hong

Liu

et al. 2021

Ceramics International

View full text Add to dashboard Cite

show abstract

Highly conductive C-Si@G nanocomposite as a high-performance anode material for Li-ion batteries

Cited by 49 publications

References 49 publications

Enhanced Electrochemical Performance Promoted by Tin in Silica Anode Materials for Stable and High-Capacity Lithium-Ion Batteries

Enhanced Electrochemical Performance Promoted by Tin in Silica Anode Materials for Stable and High-Capacity Lithium-Ion Batteries

Prompt microwave-assisted synthesis of carbon coated Si nanocomposites as anode for lithium-ion batteries

Sucrose derived microporous–mesoporous carbon for advanced lithium–sulfur batteries

Contact Info

Product

Resources

About