1-Dimensional AgVO3 nanowires hybrid with 2-dimensional graphene nanosheets to create 3-dimensional composite aerogels and their improved electrochemical properties

Nanoscale ◽  
2014 ◽  
Vol 6 (7) ◽  
pp. 3536-3539 ◽  
Author(s):  
Liying Liang ◽  
Yimeng Xu ◽  
Yong Lei ◽  
Haimei Liu
Keyword(s):  
Electrical Conductivity ◽  
Electrochemical Performance ◽  
Electrochemical Properties ◽  
Graphene Nanosheets ◽  
Lithium Ion ◽  
High Electrical Conductivity ◽  
3 Dimensional ◽  
Graphene Composite ◽  
Ion Storage ◽  
Composite Aerogels

3D porous AgVO3 nanowires/graphene composite aerogels show high electrical conductivity, high mechanical flexibility, and good electrochemical performance for lithium ion storage.

Facile hydrothermal synthesis of SnCoS4/graphene composites with excellent electrochemical performance for reversible lithium ion storage

2016 ◽  
Vol 4 (34) ◽  
pp. 13194-13202 ◽  
Author(s):  
Jianbo Ye ◽  
Tao Chen ◽  
Qiannan Chen ◽  
Weixiang Chen ◽  
Zheting Yu ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Electrochemical Performance ◽  
Lithium Ion ◽  
Lithium Storage ◽  
Hydrothermal Route ◽  
One Pot ◽  
Graphene Composite ◽  
Excellent Electrochemical Performance ◽  
Ion Storage ◽  
Hybrid Nanocrystals

An SnCoS4/graphene composite with uniformly distributed SnCoS4 hybrid nanocrystals was prepared by a one-pot hydrothermal route and exhibits excellent electrochemical performance for reversible lithium storage.

Self-assembled 3D flower-like Fe3O4/C architecture with superior lithium ion storage performance

2018 ◽  
Vol 6 (48) ◽  
pp. 24940-24948 ◽  
Author(s):  
Lijia Wan ◽  
Dong Yan ◽  
Xingtao Xu ◽  
Jiabao Li ◽  
Ting Lu ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Stable Structure ◽  
Storage Performance ◽  
Ion Storage ◽  
Self Assembled

3D flower-like Fe3O4/C with a stable structure, improved electrical conductivity, and excellent kinetic performance exhibits superior electrochemical performance for lithium-ion batteries.

CuCo2O4 Hollow Microspheres with Graphene Composite Targeting Superior Lithium-Ion Storage

Langmuir ◽  
2021 ◽  
Author(s):  
Zongdeng Wu ◽  
Haitao Ye ◽  
Bin Zhang ◽  
Juanjuan Song ◽  
Yang Wang ◽  
...  
Keyword(s):  
Lithium Ion ◽  
Hollow Microspheres ◽  
Graphene Composite ◽  
Ion Storage

scholarly journals Microwave-Assisted Synthesis of Ge/GeO2-Reduced Graphene Oxide Nanocomposite with Enhanced Discharge Capacity for Lithium-Ion Batteries

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 319
Author(s):  
Ji-Hye Koo ◽  
Seung-Min Paek
Keyword(s):  
Discharge Capacity ◽  
Graphene Nanosheets ◽  
Lithium Ion ◽  
Microwave Assisted Synthesis ◽  
Graphene Composite ◽  
Transmission Electron ◽  
Reduced Graphene ◽  
Significant Research ◽  
Long Term Performance ◽  
Term Performance

Germanium/germanium oxide nanoparticles with theoretically high discharge capacities of 1624 and 2152 mAh/g have attracted significant research interest for their potential application as anode materials in Li-ion batteries. However, these materials exhibit poor long-term performance due to the large volume change of 370% during charge/discharge cycles. In the present study, to overcome this shortcoming, a Ge/GeO2/graphene composite material was synthesized. Ge/GeO2 nanoparticles were trapped between matrices of graphene nanosheets to offset the volume expansion effect. Transmission electron microscopy images revealed that the Ge/GeO2 nanoparticles were distributed on the graphene nanosheets. Discharge/charge experiments were performed to evaluate the Li storage properties of the samples. The discharge capacity of the bare Ge/GeO2 nanoparticles in the first discharge cycle was considerably large; however, the value decreased rapidly with successive cycles. Conversely, the present Ge/GeO2/graphene composite exhibited superior cycling stability.

scholarly journals The Synthesis and Electrochemical Performance of Si Composite with Hollow Carbon Microtubes by the Carbonization of Milkweed from Nature as Anode Template for Lithium Ion Batteries

Energies ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 5124
Author(s):  
Eun Hyuk Chung ◽  
Jong Pil Kim ◽  
Hyun Gyu Kim ◽  
Jae-Min Chung ◽  
Sei-Jin Lee ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Electrical Conductivity ◽  
Electrochemical Performance ◽  
Pore Size ◽  
Lithium Ion Batteries ◽  
Polyvinylidene Fluoride ◽  
Lithium Ion ◽  
Size Analysis ◽  
Pore Size Analysis ◽  
Hollow Carbon

It has been reported that improving electrical conductivity and maintaining stable structure during discharge/charge process are challenge for Si to be used as an anode for lithium ion batteries (LIB). To address this problem, milkweed (MW) was carbonized to prepare hollow carbon microtubes (HCMT) derived from biomass as an anode template for LIB. In order to improve electrical conductivity, various materials such as chitosan (CTS), agarose, and polyvinylidene fluoride (PVDF) are used as carbon source (C1, C2, and C3) by carbonization. Carbon coated HCMT@Si composits, HCMT@Si@C1, HCMT@Si@C1@C2, and HCMT@Si@C1@C3, have been successfully synthesized. Changes in structure and crystallinity of HCMT@Si composites were characterized by using X-ray diffraction (XRD). Specific surface area for samples was calculated by using BET (Brunauer–Emmett–Teller). Also, pore size and particle size were obtained by particle and pore size analysis system. The surface morphology was evaluated using high resolution scanning electron microscopy (HR-SEM), Field Emission transmission electron microscopy (TEM). The thermal properties of HCMT@Si composites were analyzed by thermogravimetric analysis (TGA). Our research was performed to study the synthesis and electrochemical performance of Si composite with HCMT by the carbonization of natural micro hollow milkweed to form an inner space. After carbonization at 900 °C for 2 h in N2 flow, inner diameter of HCMT obtained was about 10 μm. The electrochemical tests indicate that HCMT@Si@C1@C3 exhibits discharge capacity of 932.18 mAh/g at 0.5 A/g after 100 cycles.

Electrochemical properties and lithium-ion storage mechanism of LiCuVO4 as an intercalation anode material for lithium-ion batteries

2015 ◽  
Vol 3 (2) ◽  
pp. 586-592 ◽  
Author(s):  
Malin Li ◽  
Xu Yang ◽  
Chunzhong Wang ◽  
Nan Chen ◽  
Fang Hu ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Lithium Ion ◽  
Cu Nanoparticles ◽  
Storage Mechanism ◽  
Ion Storage

LiCuVO4, as an intercalation-type anode, shows spontaneous coating behavior with Cu nanoparticles on the surface of Li3VO4 after the 1st discharge.

scholarly journals Multishelled NiO Hollow Spheres Decorated by Graphene Nanosheets as Anodes for Lithium-Ion Batteries with Improved Reversible Capacity and Cycling Stability

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Lihua Chu ◽  
Meicheng Li ◽  
Yu Wang ◽  
Xiaodan Li ◽  
Zipei Wan ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Graphene Nanosheets ◽  
Hollow Spheres ◽  
Modern Science ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Graphene Sheets ◽  
Reduced Graphene ◽  
Graphene Nanocomposite ◽  
A Current

Graphene-based nanocomposites attract many attentions because of holding promise for many applications. In this work, multishelled NiO hollow spheres decorated by graphene nanosheets nanocomposite are successfully fabricated. The multishelled NiO microspheres are uniformly distributed on the surface of graphene, which is helpful for preventing aggregation of as-reduced graphene sheets. Furthermore, the NiO/graphene nanocomposite shows much higher electrochemical performance with a reversible capacity of 261.5 mAh g−1at a current density of 200 mA g−1after 100 cycles tripled compared with that of pristine multishelled NiO hollow spheres, implying the potential application in modern science and technology.

LiMn2O4/graphene composites as cathodes with enhanced electrochemical performance for lithium-ion capacitors

RSC Advances ◽  
2016 ◽  
Vol 6 (60) ◽  
pp. 54866-54873 ◽  
Author(s):  
Jing Li ◽  
Xia Zhang ◽  
Rufang Peng ◽  
Yeju Huang ◽  
Lei Guo ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Graphene Nanosheets ◽  
Lithium Ion ◽  
Enhanced Electrochemical Performance

The LiMn2O4 microspheres (LMO-MSs)/graphene nanosheets (GNSs) composites have been synthesized using γ-MnO2 microspheres as precursor.

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