scholarly journals Nanostructured Fe2O3 Based Composites Prepared through Arc Plasma Method as Anode Materials in the Lithium-Ion Battery

2016 ◽  
Vol 2016 ◽  
pp. 1-9
Author(s):  
Minpeng Liang ◽  
Jianxin Zou ◽  
Xiaoqin Zeng ◽  
Wenjiang Ding
Keyword(s):  
Lithium Batteries ◽  
Anode Materials ◽  
Large Scale ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Oxidation Temperature ◽  
Arc Plasma ◽  
Oxidation In Air ◽  
The One ◽  
A Current

In the present work, a method combining arc plasma evaporation of a metal followed by oxidation in air was developed to produce nanosized metal oxide based composites in large scale. As an example, Fe2O3 based nanocomposites were prepared through such a method. With increasing the oxidation temperature, α-Fe2O3 content in the composites increases, while γ-Fe2O3 and residual α-Fe contents decrease. As anode materials for lithium batteries, the electrochemical properties of nanosized Fe2O3 composites were tested. It was found that the anode materials changed to tiny crystallites and then followed by grain growth during the galvanostatic charge/discharge cycles. A capacity rising was observed for the composites obtained at 400°C and 450°C, which was more prominent with increasing the oxidation temperature. Among these composites, the one obtained at 450°C showed the best performance: a specific capacity of 507.6 mAh/g remained after 150 cycles at a current density of 200 mA/g, much higher than that of the commercial nano-Fe2O3 powder (~180 mAh/g after 30 cycles).

Large-scale fabrication of porous carbon-decorated iron oxide microcuboids from Fe–MOF as high-performance anode materials for lithium-ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (10) ◽  
pp. 7356-7362 ◽  
Author(s):  
Minchan Li ◽  
Wenxi Wang ◽  
Mingyang Yang ◽  
Fucong Lv ◽  
Lujie Cao ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
High Performance ◽  
Large Scale ◽  
Specific Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Specific Capacity ◽  
Excellent Cycling Stability ◽  
Good Rate Capability

A novel microcuboid-shaped C–Fe3O4 assembly consisting of ultrafine nanoparticles derived from Fe–MOFs exhibits a greatly enhanced performance with high specific capacity, excellent cycling stability and good rate capability as anode materials for lithium ion batteries.

scholarly journals Electrospun Fe3O4-Sn@Carbon Nanofibers Composite as Efficient Anode Material for Li-Ion Batteries

Nanomaterials ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2203
Author(s):  
Hong Wang ◽  
Yuejin Ma ◽  
Wenming Zhang
Keyword(s):  
Anode Materials ◽  
Electrochemical Reaction ◽  
Active Material ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Solvothermal Reaction ◽  
Li Ion Batteries ◽  
Li Ion ◽  
A Current

Nanoscale Fe3O4-Sn@CNFs was prepared by loading Fe3O4 and Sn nanoparticles onto CNFs synthesized via electrostatic spinning and subsequent thermal treatment by solvothermal reaction, and were used as anode materials for lithium-ion batteries. The prepared anode delivers an excellent reversible specific capacity of 1120 mAh·g−1 at a current density of 100 mA·g−1 at the 50th cycle. The recovery rate of the specific capacity (99%) proves the better cycle stability. Fe3O4 nanoparticles are uniformly dispersed on the surface of nanofibers with high density, effectively increasing the electrochemical reaction sites, and improving the electrochemical performance of the active material. The rate and cycling performance of the fabricated electrodes were significantly improved because of Sn and Fe3O4 loading on CNFs with high electrical conductivity and elasticity.

scholarly journals Cobalt Sulfide Confined in N-Doped Porous Branched Carbon Nanotubes for Lithium-Ion Batteries

2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Yongsheng Zhou ◽  
Yingchun Zhu ◽  
Bingshe Xu ◽  
Xueji Zhang ◽  
Khalid A. Al-Ghanim ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Lithium Ion Batteries ◽  
Current Density ◽  
Large Scale ◽  
Coulombic Efficiency ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Cobalt Sulfide ◽  
Energy Storage Devices ◽  
A Current

Abstract Lithium-ion batteries (LIBs) are considered new generation of large-scale energy-storage devices. However, LIBs suffer from a lack of desirable anode materials with excellent specific capacity and cycling stability. In this work, we design a novel hierarchical structure constructed by encapsulating cobalt sulfide nanowires within nitrogen-doped porous branched carbon nanotubes (NBNTs) for LIBs. The unique hierarchical Co9S8@NBNT electrode displayed a reversible specific capacity of 1310 mAh g−1 at a current density of 0.1 A g−1, and was able to maintain a stable reversible discharge capacity of 1109 mAh g−1 at a current density of 0.5 A g−1 with coulombic efficiency reaching almost 100% for 200 cycles. The excellent rate and cycling capabilities can be ascribed to the hierarchical porosity of the one-dimensional Co9S8@NBNT internetworks, the incorporation of nitrogen doping, and the carbon nanotube confinement of the active cobalt sulfide nanowires offering a proximate electron pathway for the isolated nanoparticles and shielding of the cobalt sulfide nanowires from pulverization over long cycling periods.

scholarly journals The Progress of Cobalt-Based Anode Materials for Lithium Ion Batteries and Sodium Ion Batteries

2020 ◽  
Vol 10 (9) ◽  
pp. 3098 ◽  
Author(s):  
Yaohui Zhang ◽  
Nana Wang ◽  
Zhongchao Bai
Keyword(s):  
Energy Storage ◽  
Anode Materials ◽  
High Performance ◽  
Large Scale ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Sodium Ion ◽  
Electrochemical Performances ◽  
Sodium Ion Batteries ◽  
Preparation Methods

Limited by the development of energy storage technology, the utilization ratio of renewable energy is still at a low level. Lithium/sodium ion batteries (LIBs/SIBs) with high-performance electrochemical performances, such as large-scale energy storage, low costs and high security, are expected to improve the above situation. Currently, developing anode materials with better electrochemical performances is the main obstacle to the development of LIBs/SIBs. Recently, a variety of studies have focused on cobalt-based anode materials applied for LIBs/SIBs, owing to their high theoretical specific capacity. This review systematically summarizes the recent status of cobalt-based anode materials in LIBs/SIBs, including Li+/Na+ storage mechanisms, preparation methods, applications and strategies to improve the electrochemical performance of cobalt-based anode materials. Furthermore, the current challenges and prospects are also discussed in this review. Benefitting from these results, cobalt-based materials can be the next-generation anode for LIBs/SIBs.

INDUCED ELECTRODEPOSITION OF AMORPHOUS MOLYBDENUM (IV) OXIDE FILM BY Ni2+ AND ITS ABILITY OF LITHIUM STORAGE

2016 ◽  
Vol 24 (05) ◽  
pp. 1750070
Author(s):  
CHANGWEI SU ◽  
MENGCHAO YE ◽  
YANG BAI ◽  
JIANPING HOU ◽  
JUNMING GUO
Keyword(s):  
Anode Materials ◽  
Specific Capacity ◽  
Oxide Films ◽  
Lithium Ion ◽  
Lithium Storage ◽  
Capacity Retention ◽  
High Specific Capacity ◽  
Cracked Structures ◽  
A Current ◽  
Scanning Electron

Amorphous molybdenum oxide films with almost 20[Formula: see text][Formula: see text]m thickness are electrodeposited on the Cu foils from a citrate-ammonia molybdate bath containing Ni[Formula: see text] ions. The content of Ni in the oxide films is very low, 0.87 at.%. XRD and FTIR data suggest that they are composed of hydrous MoO2. The multilayer and cracked structures are characterized by scanning electron microscopy (SEM), and are beneficial to transmission of Li[Formula: see text] ions between the electrolyte and anode materials. Galvanostatic battery testing shows that amorphous molybdenum (IV) oxides as anodes for lithium-ion batteries exhibit a high specific capacity of 876[Formula: see text]mA[Formula: see text]h[Formula: see text]g[Formula: see text] at a current density of 50[Formula: see text]mA[Formula: see text]g[Formula: see text], good capacity retention as high as 97.4% after 20 cycles.

Self-assembly of silicon/carbon hybrids and natural graphite as anode materials for lithium-ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (107) ◽  
pp. 104995-105002 ◽  
Author(s):  
Aoning Wang ◽  
Fandong Liu ◽  
Zhoulu Wang ◽  
Xiang Liu
Keyword(s):  
Self Assembly ◽  
Anode Materials ◽  
Coulombic Efficiency ◽  
Specific Capacity ◽  
Lithium Ion ◽  
High Specific Capacity ◽  
Silicon Carbon ◽  
Good Cycling Stability ◽  
Initial Coulombic Efficiency ◽  
A Current

Si–C–NG composites exhibit a high specific capacity, a high initial coulombic efficiency, and a good cycling stability with capacity retention after 100 cycles at a current density of 100 mA g−1.

The preparation of Si/SiC composites by magnesium heat reduction of SiO2 aerogel and study on electrochemistry properties

2019 ◽  
Vol 34 (01n03) ◽  
pp. 2040011
Author(s):  
Bowen Dong ◽  
Bingbing Deng ◽  
Yangai Liu
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Anode Materials ◽  
High Performance ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Lithium Storage ◽  
Silicon Carbon ◽  
Sic Composites ◽  
A Current

Silicon, an anode material for lithium ion batteries, has the highest theoretical specific capacity ([Formula: see text] mAh/g). The actual lithium storage capacity of [Formula: see text] mAh/g is about 10 times that of the graphite anode materials class. This study involves magnesium heat reduction of the SiO2 preparation of silicon carbon composites. The Si/SiC composite shows a high initial specific capacity of 1406.7 mAh/g with a current density of 0.1 A/g. The morphology and pore size inherited from the SiO2 aerogel counteracts the volume expansion during the lithiation/delithiation process. This paper provides an articulate methodology for designing silicon anode material for high-performance rechargeable lithium-ion batteries.

scholarly journals Effect of Different Binder Proportions on Properties of Silicon-based Anode Materials

2021 ◽  
Vol 2 (2) ◽  
Keyword(s):  
Anode Materials ◽  
Large Scale ◽  
Specific Capacity ◽  
Lithium Ion ◽  
High Volume ◽  
Silicon Anode ◽  
Change Rate ◽  
Sei Film ◽  
Battery Technology ◽  
Silicon Based

With the development of lithium-ion battery technology, silicon anode is deemed as an ideal next-generation anode materials by virtue of its extremely high specific capacity. Nevertheless, higher requirements are raised for the properties of the binder owing to the high volume change rate of silicon anode during charging and discharging and the thickening of SEI film. In respect of the binders such as polyacrylic acid (PAA), polyvinyl alcohol (PVA), sodium alginate (Alginate), sodium carboxymethylcellulose (CMC) in possession of large-scale application value, this paper studies the effects of different binders and mixed binders with different ratios on the properties of silicon anode materials. As a result, it is suggested that the binders acquired when PAA:PVA=9:1 can render it possible for the electrode to be provided with better charge-discharge cyclic performance.

scholarly journals Sub-micro droplet reactors: Green synthesis of Li3VO4 anode materials for lithium ion batteries

2020 ◽  
Author(s):  
Tran Ha ◽  
Ngoc Hung Vu ◽  
Hyunwoo Ha ◽  
Joonhee Moon ◽  
Hyun You Kim ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Synergic Effect ◽  
Acid Base ◽  
Reaction Conditions ◽  
Ca Doping ◽  
Micro Reactors ◽  
A Current

Abstract A new green-chemistry strategy, based on modified solid-state reaction with the addition of water vapor to accelerate acid-base reactions (ABR) at low temperature, was developed along with Ca-doping to synthesize electrode material for lithium-ion batteries. The new method which helps in control the particles size and saving energy in synthesis has been developed. To explain this process, we proposed a mechanism in which water droplets play a key role as sub-micro reactors, calculated as few tens of nanometers, to ensure proper reaction conditions and confine crystal growth to nano-dimensions. The synergic effect of the proposed ABR method and Ca-doping is discussed to further explain the increase in the specific surface area and electrochemical performance of the anode material. The optimized material, Ca-doped Li3VO4, delivers a superior specific capacity of 543.1 mAh⸳g-1 after 200 cycles at a current density of 100 mA⸳g-1, which could be attributed to the contribution of pseudocapacitance.

scholarly journals Effect of Different Binder Proportions on Properties of Silicon-based Anode Materials

2021 ◽  
Vol 2 (2) ◽  
Keyword(s):  
Anode Materials ◽  
Large Scale ◽  
Specific Capacity ◽  
Lithium Ion ◽  
High Volume ◽  
Silicon Anode ◽  
Change Rate ◽  
Sei Film ◽  
Battery Technology ◽  
Silicon Based

With the development of lithium-ion battery technology, silicon anode is deemed as an ideal next-generation anode materials by virtue of its extremely high specific capacity. Nevertheless, higher requirements are raised for the properties of the binder owing to the high volume change rate of silicon anode during charging and discharging and the thickening of SEI film. In respect of the binders such as polyacrylic acid (PAA), polyvinyl alcohol (PVA), sodium alginate (Alginate), sodium carboxymethylcellulose (CMC) in possession of large-scale application value, this paper studies the effects of different binders and mixed binders with different ratios on the properties of silicon anode materials. As a result, it is suggested that the binders acquired when PAA:PVA=9:1 can render it possible for the electrode to be provided with better charge-discharge cyclic performance.

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