Wrinkled rGO Sheets-Wrapped Carbon Fibers with High Tensile Strength and Excellent Electrochemical Stability as Anodes for Structural Li-Ion Battery

NANO ◽  
2018 ◽  
Vol 13 (08) ◽  
pp. 1850095
Author(s):  
Huagen Li ◽  
Shubin Wang ◽  
Mengjie Feng ◽  
Jiping Yang ◽  
Boming Zhang
Keyword(s):  
Tensile Strength ◽  
Carbon Fiber ◽  
Anode Material ◽  
Self Assembly ◽  
Coulombic Efficiency ◽  
Annealing Treatment ◽  
Lithium Ion ◽  
High Tensile Strength ◽  
Ion Diffusion ◽  
Assembly Method

Herein, we report a hierarchical structure formed by wrinkled reduced graphene oxide (rGO) sheets-wrapped carbon fiber via a facile and efficient electrostatic self-assembly method and subsequent annealing treatment. For this material, the Weibull scale parameter is 4.77[Formula: see text]GPa. After 100 cycles, the rGO@CF retains 91% of its second charge capacity at 50[Formula: see text]mA ⋅g−1, corresponding to a capacity fading of only 0.09% per cycle. Thus, this structural anode material exhibits enhanced capacity, high initial Coulombic efficiency and high tensile strength. Meanwhile, the carbon fiber and interweaved rGO sheets together form the whole conductive networks to provide multichannel highways for charge transfer (lithium-ion diffusion and electron transport) during discharge–charge processes, promising excellent electrochemical performance of this structural anode material.

Novel nitrogen-rich porous carbon spheres as a high-performance anode material for lithium-ion batteries

2014 ◽  
Vol 2 (39) ◽  
pp. 16617-16622 ◽  
Author(s):  
Dongdong Li ◽  
Liang-Xin Ding ◽  
Hongbin Chen ◽  
Suqing Wang ◽  
Zhong Li ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Porous Carbon ◽  
Self Assembly ◽  
High Performance ◽  
Lithium Ion ◽  
Carbon Spheres ◽  
Assembly Method ◽  
Porous Carbon Spheres

Novel nitrogen-rich porous carbon spheres with appropriate pores distribution are proposed and prepared by using a template-assisted self-assembly method, and exhibit superior electrochemical performance and show promise as the anode material for LIBs.

Sub-micron silicon/pyrolyzed carbon@natural graphite self-assembly composite anode material for lithium-ion batteries

2017 ◽  
Vol 313 ◽  
pp. 187-196 ◽  
Author(s):  
Zhoulu Wang ◽  
Zemin Mao ◽  
Linfei Lai ◽  
Masayoshi Okubo ◽  
Yinghong Song ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Self Assembly ◽  
Lithium Ion ◽  
Composite Anode ◽  
Natural Graphite

Synthesis and Electrochemical Performance of SnO2/Graphene Hybrid Anode for Lithium Ion Batteries

2013 ◽  
Vol 1540 ◽  
Author(s):  
Chia-Yi Lin ◽  
Chien-Te Hsieh ◽  
Ruey-Shin Juang
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
High Performance ◽  
Coulombic Efficiency ◽  
Rate Capability ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Cycling Performance ◽  
Homogeneous Distribution

ABSTRACTAn efficient microwave-assisted polyol (MP) approach is report to prepare SnO2/graphene hybrid as an anode material for lithium ion batteries. The key factor to this MP method is to start with uniform graphene oxide (GO) suspension, in which a large amount of surface oxygenate groups ensures homogeneous distribution of the SnO2 nanoparticles onto the GO sheets under the microwave irradiation. The period for the microwave heating only takes 10 min. The obtained SnO2/graphene hybrid anode possesses a reversible capacity of 967 mAh g-1 at 0.1 C and a high Coulombic efficiency of 80.5% at the first cycle. The cycling performance and the rate capability of the hybrid anode are enhanced in comparison with that of the bare graphene anode. This improvement of electrochemical performance can be attributed to the formation of a 3-dimensional framework. Accordingly, this study provides an economical MP route for the fabrication of SnO2/graphene hybrid as an anode material for high-performance Li-ion batteries.

scholarly journals Nanocomposite of Si/C Anode Material Prepared by Hybrid Process of High-Energy Mechanical Milling and Carbonization for Li-Ion Secondary Batteries

2018 ◽  
Vol 8 (11) ◽  
pp. 2140 ◽  
Author(s):  
Reddyprakash Maddipatla ◽  
Chadrasekhar Loka ◽  
Woo Choi ◽  
Kee-Sun Lee
Keyword(s):  
Electron Microscopy ◽  
Anode Material ◽  
Mechanical Milling ◽  
Coulombic Efficiency ◽  
Electronic Conductivity ◽  
High Capacity ◽  
Lithium Ion ◽  
High Energy ◽  
Particle Size Reduction ◽  
Milled Powders

Si/C nanocomposite was successfully prepared by a scalable approach through high-energy mechanical milling and carbonization process. The crystalline structure of the milled powders was studied using X-ray diffraction (XRD) and transmission electron microscopy (TEM). Morphology of the milled powders was investigated by Field-emission scanning electron microscopy (FE-SEM). The effects of milling time on crystalline size, crystal structure and microstructure, and the electrochemical properties of the nanocomposite powders were studied. The nanocomposite showed high reversible capacity of ~1658 mAh/g with an initial cycle coulombic efficiency of ~77.5%. The significant improvement in cyclability and the discharge capacity was mainly ascribed to the silicon particle size reduction and carbon layer formation over silicon for good electronic conductivity. As the prepared nanocomposite Si/C electrode exhibits remarkable electrochemical performance, it is potentially applied as a high capacity anode material in the lithium-ion secondary batteries.

scholarly journals Nitrogen-Doped Porous Co3O4/Graphene Nanocomposite for Advanced Lithium-Ion Batteries

Nanomaterials ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 1253 ◽  
Author(s):  
Huihui Zeng ◽  
Baolin Xing ◽  
Lunjian Chen ◽  
Guiyun Yi ◽  
Guangxu Huang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Self Assembly ◽  
Active Sites ◽  
Large Scale ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Co3o4 Nanoparticles ◽  
Nitrogen Doped ◽  
Novel Approach

A novel approach is developed to synthesize a nitrogen-doped porous Co3O4/anthracite-derived graphene (Co3O4/AG) nanocomposite through a combined self-assembly and heat treatment process using resource-rich anthracite as a carbonaceous precursor. The nanocomposite contains uniformly distributed Co3O4 nanoparticles with a size smaller than 8 nm on the surface of porous graphene, and exhibits a specific surface area (120 m2·g−1), well-developed mesopores distributed at 3~10 nm, and a high level of nitrogen doping (5.4 at. %). These unique microstructure features of the nanocomposite can offer extra active sites and efficient pathways during the electrochemical reaction, which are conducive to improvement of the electrochemical performance for the anode material. The Co3O4/AG electrode possesses a high reversible capacity of 845 mAh·g−1 and an excellent rate capacity of 587 mAh·g−1. Furthermore, a good cyclic stability of 510 mAh·g−1 after 100 cycles at 500 mA·g−1 is maintained. Therefore, this work could provide an economical and effective route for the large-scale application of a Co3O4/AG nanocomposite as an excellent anode material in lithium-ion batteries.

Controlled interface between carbon fiber and epoxy by molecular self-assembly method

2006 ◽  
Vol 99 (2-3) ◽  
pp. 388-393 ◽  
Author(s):  
Jinmei He ◽  
Yudong Huang ◽  
Li Liu ◽  
Hailin Cao
Keyword(s):  
Carbon Fiber ◽  
Self Assembly ◽  
Assembly Method

Carbon coated porous silicon flakes with high initial coulombic efficiency and long-term cycling stability for lithium ion batteries

2019 ◽  
Vol 3 (9) ◽  
pp. 2361-2365 ◽  
Author(s):  
Xiaoyong Dou ◽  
Ming Chen ◽  
Jiantao Zai ◽  
Zhen De ◽  
Boxu Dong ◽  
...  
Keyword(s):  
Porous Silicon ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Coulombic Efficiency ◽  
Lithium Ion ◽  
Cycling Stability ◽  
Next Generation ◽  
Carbon Coated ◽  
Initial Coulombic Efficiency

Silicon (Si) has been regarded as a promising next-generation anode material to replace carbon-based materials for lithium ion batteries (LIBs).

Preparation of Self-Assembled Au Nanoparticles Arrays for Silicon Solar Cell Applications

2013 ◽  
Vol 803 ◽  
pp. 257-262
Author(s):  
Chun Yan Duan ◽  
Yuan Feng ◽  
Xiao Xia Zhao ◽  
Hui Shen
Keyword(s):  
Solar Cells ◽  
Self Assembly ◽  
Silicon Solar Cell ◽  
Au Nanoparticles ◽  
Annealing Treatment ◽  
Silicon Solar Cells ◽  
Annealing Temperatures ◽  
Assembly Method ◽  
Surface Morphologies ◽  
Particle Shapes

Au nanoparticles arrays for silicon solar cells were fabricated by self-assembly method to accommodate manufacturing process of traditional silicon solar cells. Surface morphologies of 10-30 nm thick films after annealing treatment at 600 °C and 700 °C were analyzed. It indicated that morphological features of Au nanoparticles arrays such as particle shapes, size distribution vary with thicknesses of Au films, annealing temperatures and surface morphologies of substrates.

Metal–organic framework derived amorphous VOx coated Fe3O4/C hierarchical nanospindle as anode material for superior lithium-ion batteries

Nanoscale ◽  
2020 ◽  
Vol 12 (32) ◽  
pp. 16901-16909
Author(s):  
Bowen Cong ◽  
Yongyuan Hu ◽  
Shanfu Sun ◽  
Yu Wang ◽  
Bo Wang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Coulombic Efficiency ◽  
Metal Organic Framework ◽  
Lithium Ion ◽  
Cycling Stability ◽  
Rate Performance ◽  
Metal Organic ◽  
High Coulombic Efficiency ◽  
Organic Framework

A novel Fe3O4/C@VOx hierarchical nanospindle anode material for LIBs has been successfully designed and fabricated through a MOF-derived route, which delivers high coulombic efficiency, outstanding cycling stability and rate performance.

Cu–Al–Si alloy anode material with enhanced electrochemical properties for lithium ion batteries

2019 ◽  
Vol 12 (04) ◽  
pp. 1950054 ◽  
Author(s):  
Huilin Fan ◽  
Youhong Wang ◽  
Mingxiang Yu ◽  
Kangkang Wang ◽  
Junting Zhang ◽  
...  
Keyword(s):  
Anode Material ◽  
Electrode Material ◽  
Coulombic Efficiency ◽  
Specific Capacity ◽  
Negative Electrode ◽  
Lithium Ion ◽  
Alloy Anode ◽  
Multiple Mixing ◽  
Negative Electrode Material ◽  
Circular Outline

The microstructure and electrochemical property of Cu–Al–Si alloy anode material are studied in this paper. The research shows that the alloy particle has a basic circular outline, and two copper-rich phases with different silicon contents are detected in the particle, and both phases with nanostructure are observed in its surface layer. The nano-silicon alloy negative electrode material needs to be used in a certain proportion with graphite, binder and conductive agent, and the stirring process also has an important influence on its electrochemical performance. Multiple mixing can achieve a better cycle retention compared to direct mixing. The first-cycle coulombic efficiency of the electrode material is improved up to about 90%, and the specific capacity is still higher than 500[Formula: see text]mAh[Formula: see text]g[Formula: see text] after 100 cycles. The battery manufacturing process is similar to the graphite negative electrode, so it is easy to be applied.

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