Large reversible capacity of high quality graphene sheets as an anode material for lithium-ion batteries

Three-dimensional ordered macroporous (3DOM) nickel ferrite ( NiFe2O4 ) anode material is synthesized via colloidal crystal template. A Close-packed poly(methyl methacrylate) (PMMA) spheres is used as template. Scanning electron microscopy observations reveal that the obtained 3DOM NiFe2O4 material has uniform spherical macropores with diameter about 140-nm and 20-nm size walls. The cyclic voltammogram and galvanostatic test are employed to evaluate the electrochemical characteristics of the as-prepared NiFe2O4 . It shows high initial discharge capacity (up to 1370 mAh g-1) and reversible capacity of 670 mAh g-1 at the current density of 0.2 mA cm-2. The results suggest that 3DOM nickel ferrite is a good candidate for anode material of lithium ion batteries.

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

MRS Proceedings ◽

10.1557/opl.2013.1040 ◽

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.

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

Nanomaterials ◽

10.3390/nano9091253 ◽

2019 ◽

Vol 9 (9) ◽

pp. 1253 ◽

Cited By ~ 5

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.

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Preparation of a porous Sn@C nanocomposite as a high-performance anode material for lithium-ion batteries

Nanoscale ◽

10.1039/c5nr03093e ◽

2015 ◽

Vol 7 (28) ◽

pp. 11940-11944 ◽

Cited By ~ 50

Author(s):

Yanjun Zhang ◽

Li Jiang ◽

Chunru Wang

Keyword(s):

Lithium Ion Batteries ◽

Anode Material ◽

High Performance ◽

Rate Capability ◽

Lithium Ion ◽

Reversible Capacity ◽

Facile Hydrothermal Method ◽

Calcination Process ◽

Long Cycle Life ◽

Good Rate Capability

A porous Sn@C nanocomposite was prepared via a facile hydrothermal method combined with a simple post-calcination process. It exhibited excellent electrochemical behavior with a high reversible capacity, long cycle life and good rate capability when used as an anode material for lithium ion batteries.

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Carbon nanotube-wrapped Fe2O3 anode with improved performance for lithium-ion batteries

Beilstein Journal of Nanotechnology ◽

10.3762/bjnano.8.69 ◽

2017 ◽

Vol 8 ◽

pp. 649-656 ◽

Cited By ~ 6

Author(s):

Guoliang Gao ◽

Yan Jin ◽

Qun Zeng ◽

Deyu Wang ◽

Cai Shen

Keyword(s):

Hydrothermal Synthesis ◽

Lithium Ion Batteries ◽

Anode Material ◽

Electronic Conductivity ◽

Lithium Ion ◽

Reversible Capacity ◽

Practical Application ◽

Lithium Storage ◽

Improved Performance ◽

A Current

Metall oxides have been proven to be potential candidates for the anode material of lithium-ion batteries (LIBs) because they offer high theoretical capacities, and are environmentally friendly and widely available. However, the low electronic conductivity and severe irreversible lithium storage have hindered a practical application. Herein, we employed ethanolamine as precursor to prepare Fe2O3/COOH-MWCNT composites through a simple hydrothermal synthesis. When these composites were used as electrode material in lithium-ion batteries, a reversible capacity of 711.2 mAh·g−1 at a current density of 500 mA·g−1 after 400 cycles was obtained. The result indicated that Fe2O3/COOH-MWCNT composite is a potential anode material for lithium-ion batteries.

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NANOPOROUS COPPER–SILICON COMPOSITE PREPARED BY CHEMICAL DEALLOYING AS ANODE MATERIAL FOR LITHIUM-ION BATTERIES

Functional Materials Letters ◽

10.1142/s1793604713500331 ◽

2013 ◽

Vol 06 (03) ◽

pp. 1350033 ◽

Cited By ~ 3

Author(s):

GUIJING LI ◽

YANYAN SONG ◽

LINPING ZHANG ◽

XIN WEI ◽

XIAOPING SONG ◽

...

Keyword(s):

Lithium Ion Batteries ◽

Anode Material ◽

High Capacity ◽

Lithium Ion ◽

Reversible Capacity ◽

Simple Method ◽

Electrochemical Tests ◽

Nanoporous Copper ◽

Excellent Electrochemical Performance ◽

Melt Spun

A novel and simple method has been developed to prepare the Cu-Si composite as anode material for lithium-ion batteries. Nanoporous Cu-Si composite with pore sizes of 1~30 nm was prepared by dealloying the melt-spun Al-Cu-Si-Ce ribbons in a 5 wt.% HCl solution. Electrochemical tests revealed that the nanoporous Cu-Si electrodes exhibited highly reversible capacity of 2317 mAhg-1 and retained a capacity of 1030 mAhg-1 over 20 cycles. The excellent electrochemical performance is attributed to the unique porous structure of the Cu-Si composite. Our results demonstrate that this novel composite is a promising anode candidate for high-capacity rechargeable lithium-ion batteries.

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Ultra-small and highly crystallized ZnFe2O4 nanoparticles within double graphene networks for super-long life lithium-ion batteries

Journal of Materials Chemistry A ◽

10.1039/c7ta02726e ◽

2017 ◽

Vol 5 (22) ◽

pp. 11188-11196 ◽

Cited By ~ 38

Author(s):

Longhai Zhang ◽

Tong Wei ◽

Jingming Yue ◽

Lizhi Sheng ◽

Zimu Jiang ◽

...

Keyword(s):

Lithium Ion Batteries ◽

Rate Capability ◽

Lithium Ion ◽

Reversible Capacity ◽

Graphene Sheets ◽

Spatial Confinement ◽

Long Life ◽

Znfe2o4 Nanoparticles ◽

Novel Strategy ◽

Superior Cycling Stability

We report a novel strategy for spatial confinement of ultra-small and highly crystallized ZnFe2O4 nanoparticles within double graphene networks constructed by ultra-small and large graphene sheets. The ZnFe2O4/graphene hybrid exhibits a large reversible capacity, excellent rate capability, and superior cycling stability.

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Synthesis of Nitrogen and Phosphorus Dual-Doped Graphene Oxide as High-Performance Anode Material for Lithium-Ion Batteries

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2020.18872 ◽

2020 ◽

Vol 20 (12) ◽

pp. 7673-7679

Author(s):

Ke Wang ◽

Zhi Li

Keyword(s):

Graphene Oxide ◽

Lithium Ion Batteries ◽

Anode Material ◽

High Performance ◽

Lithium Ion ◽

Reversible Capacity ◽

Nitrogen And Phosphorus ◽

Xrd Pattern ◽

Ion Storage ◽

Doped Graphene

Nitrogen and phosphorus dual-doped graphene oxide was prepared by directly calcining a mixture of pure graphene oxide, urea (nitrogen source), and 1,2-bis(diphenylphosphino)methane (phosphorous source). The morphology and composition of the obtained dual-doped graphene oxide were confirmed by SEM, TEM, XRD pattern, Raman spectrum, and XPS. The nitrogen and phosphorous dual-doped graphene oxide was tested as an anode material of lithium-ion batteries (LIBs). The cycle and rate performance of the dual-doped graphene oxide were also examined. The dualdoped graphene oxide exhibited a superior initial discharge capacity of 2796 mAh·g−1 and excellent reversible capacity of 1200 mAh·g−1 at a current density of 100 mA·g−1 after 200 charge/discharge cycles, suggesting that the dual-doping of nitrogen and phosphorous is an effective way to enhance lithium-ion storage for graphene oxide.

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Synthesis and Characterization of Silicon Nanoparticles Inserted into Graphene Sheets as High Performance Anode Material for Lithium Ion Batteries

Journal of Nanomaterials ◽

10.1155/2014/734751 ◽

2014 ◽

Vol 2014 ◽

pp. 1-6 ◽

Cited By ~ 6

Author(s):

Yong Chen ◽

Xuejun Zhang ◽

Yanhong Tian ◽

Xi Zhao

Keyword(s):

Lithium Ion Batteries ◽

Anode Material ◽

High Performance ◽

Silicon Nanoparticles ◽

Lithium Ion ◽

Cycling Performance ◽

Thermal Reduction ◽

High Rate ◽

Graphene Sheets ◽

Si Nanoparticles

Silicon nanoparticles have been successfully inserted into graphene sheets via a novel method combining freeze-drying and thermal reduction. The structure, electrochemical performance, and cycling stability of this anode material were characterized by SEM, X-ray diffraction (XRD), charge/discharge cycling, and cyclic voltammetry (CV). CV showed that the Si/graphene nanocomposite exhibits remarkably enhanced cycling performance and rate performance compared with bare Si nanoparticles for lithium ion batteries. XRD and SEM showed that silicon nanoparticles inserted into graphene sheets were homogeneous and had better layered structure than the bare silicon nanoparticles. Graphene sheets improved high rate discharge capacity and long cycle-life performance. The initial capacity of the Si nanoparticles/graphene keeps above 850 mAhg−1after 100 cycles at a rate of 100 mAg−1. The excellent cycle performances are caused by the good structure of the composites, which ensured uniform electronic conducting sheet and intensified the cohesion force of binder and collector, respectively.

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