Preparation and Study on Si/Ag/C Composite as Anode Material for Lithium Ion Batteries

2013 ◽  
Vol 834-836 ◽  
pp. 281-284
Author(s):  
Tao Cui ◽  
Yao Wu Wang ◽  
Xu Yao Hu ◽  
Yu Ming Shang ◽  
Xiang Ming He ◽  
...  
Keyword(s):  
Surface Morphology ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Test Results ◽  
Electrochemical Test ◽  
Sem Images ◽  
Charge Discharge ◽  
Discharge Test

Si/Ag/C composite was prepared by two-step reaction. The phase and surface morphology of samples was studied by XRD and SEM. The electrochemical performance of the composite was investigated by charge/discharge test. SEM images indicate that the particles dispersed uniform and structure of the materials is stable. Electrochemical test results show that the initial discharged and charge capacities of Si/Ag/C composite are 2016.9 mAh/g and 1275.0 mAh/g, respectively. A reversible capacity of Si/Ag/C composite after 50 cycles is 325.5 mAh/g retained.

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.

Influence of Heating Temperature on Structure, Morphology and Electrochemical Performance of LiV3O8 Cathode for Lithium-Ion Batteries Application

2020 ◽  
Vol 1010 ◽  
pp. 314-320
Author(s):  
Mohamad Izha Ishak ◽  
Khairel Rafezi Ahmad ◽  
Rozana A.M. Osman ◽  
Mohd Sobri Idris
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Layered Structure ◽  
Heating Temperature ◽  
Lithium Ion ◽  
Galvanostatic Charge ◽  
Heat Treated ◽  
Structure Morphology ◽  
Performance Results ◽  
Charge Discharge

LiV3O8 layered structure was successfully synthesized by a conventional solid-state approach and subsequent heat-treated at 400, 450, 500 and 550 oC. The samples were characterized by XRD, SEM, TEM, BET. Electrochemical performance of LiV3O8 was investigated by cyclic voltammetry (CV) and galvanostatic charge-discharge. The results showed that high purity of LiV3O8 with layered structure was formed. The morphology of the samples were mixed between nanorods and nanosheets structure. For electrochemical performance, results showed that LiV3O8 heat-treated at 500 oC performed a highest charge and discharge capacity of 212 and 172 mAh g-1, respectively. From electrochemical performance results made them a good candidate for cathode material for lithium-ion batteries application.

Electrospun porous lithium manganese phosphate–carbon nanofibers as a cathode material for lithium ion batteries

2015 ◽  
Vol 3 (34) ◽  
pp. 17713-17720 ◽  
Author(s):  
Li Liu ◽  
Taeseup Song ◽  
Hyungkyu Han ◽  
Hyunjung Park ◽  
Juan Xiang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Composite Nanofibers ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Stable Cycle ◽  
High Reversible Capacity ◽  
Manganese Phosphate ◽  
Excellent Electrochemical Performance ◽  
Lithium Manganese Phosphate

Porous LiMnPO4/C composite nanofibers show excellent electrochemical performance including a high reversible capacity of 112.7 mA h g−1 and stable cycle retention of 95% after 100 cycles.

Electrochemical Performance Cr Doped Spinel LiMn2O4 Cathode for Lithium Ion Batteries

2014 ◽  
Vol 636 ◽  
pp. 49-53
Author(s):  
Si Qi Wen ◽  
Liang Chao Gao ◽  
Jia Li Wang ◽  
Lei Zhang ◽  
Zhi Cheng Yang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Electrochemical Impedance ◽  
Sol Gel ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Cycle Performance ◽  
X Ray Diffraction ◽  
X Ray ◽  
Discharge Test

To improve the cycle performance of spinel LiMn2O4as the cathode of 4 V class lithium ion batteries, spinel were successfully prepared using the sol-gel method. The dependence of the physicochemical properties of the spinel LiCrxMn2-xO4(x=0,0.05,0.1,0.2,0.3,0.4) powders powder has been extensively investigated by using X-ray diffraction (XRD), scanning electron microscope (SEM), charge-discharge test and electrochemical impedance spectroscopy (EIS). The results show that as Mn is replaced by Cr, the initial capacity decreases, but the cycling performance improves due to stabilization of spinel structure. Of all, the LiCr0.2Mn1.8O4has best electrochemical performance, 107.6 mAhg-1discharge capacity, 96.1% of the retention after 50 cycles.

Enhanced electrochemical performance of hierarchical CoFe2O4/MnO2/C nanotubes as anode materials for lithium-ion batteries

2015 ◽  
Vol 3 (23) ◽  
pp. 12328-12333 ◽  
Author(s):  
Junjie Zhou ◽  
Ting Yang ◽  
Minglei Mao ◽  
Weiji Ren ◽  
Qiuhong Li
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Facile Preparation ◽  
Enhanced Electrochemical Performance ◽  
C Nanotubes

We report a facile preparation of MnO2 nanosheet-coated CoFe2O4 nanofibers containing carbon for lithium ion batteries. The CoFe2O4/MnO2/C nanotubes exhibit a reversible capacity of 713.6 mA h g−1 at 100 mA g−1 after 250 cycles.

scholarly journals Твердотельный литий-ионный аккумулятор: структура, технология и характеристики

2020 ◽  
Vol 46 (5) ◽  
pp. 15
Author(s):  
А.С. Рудый ◽  
А.А. Мироненко ◽  
В.В. Наумов ◽  
А.М. Скундин ◽  
Т.Л. Кулова ◽  
...  
Keyword(s):  
Thin Film ◽  
Solid State ◽  
Fermi Level ◽  
Lithium Ion Batteries ◽  
Lithium Ion Battery ◽  
Lithium Ion ◽  
Test Results ◽  
Lithium Ions ◽  
Discharge Characteristics ◽  
Charge Discharge

The design description and test results of an all solid-state thin-film lithium-ion battery are provided. It is shown that the features of its charge-discharge characteristics are associated with a change in the Fermi level of the electrodes and are caused by a change in the concentration of lithium ions in the course of the charge-discharge. The specific capacitive characteristics of the layout are determined, which are comparable with the characteristics of industrial solid-state lithium-ion batteries.

Coaxial carbon nanofiber/NiO core–shell nanocables as anodes for lithium ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (30) ◽  
pp. 23548-23555 ◽  
Author(s):  
Seok-Hwan Park ◽  
Wan-Jin Lee
Keyword(s):  
Lithium Ion Batteries ◽  
Electrophoretic Deposition ◽  
Carbon Nanofiber ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Core Shell ◽  
High Reversible Capacity ◽  
Charge Discharge

The CNF/NiO core–shell nanocables are prepared by electrospinning and electrophoretic deposition. The CNF/NiO nanocables deliver a high reversible capacity of 825 mA h g−1 at 200 mA g−1 after 50 charge–discharge cycles without showing obvious decay.

Summarize the Studies on Improving the Electrochemical Performance of Spinel LiMn2O4

2013 ◽  
Vol 690-693 ◽  
pp. 971-976 ◽  
Author(s):  
Fu Li Wang ◽  
Hong Dan Xue ◽  
Ke Wang ◽  
Pu Liu ◽  
Yong Qing Bai
Keyword(s):  
High Temperature ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Research Progress ◽  
Research Trend ◽  
Cycle Stability ◽  
Spinel Limn2o4 ◽  
Nanometer Particles ◽  
Charge Discharge

Many studies show spinel LiMn2O4 is one of the most promising cathode materials for lithium ion batteries. At present, urgent need is that capacity attenuation in the process of charge / discharge and cycle stability at high temperature are developed. The methods can be classified into bulk doped, surface coated and nanometer particles. Research progress about improving the electrochemical performance of spinel LiMn2O4 is summarized and further research trend is pointed out in this paper.

Preparation and Electrochemical Performance of SnO2/Graphite/Carbon Nanotube Composite Anode for Lithium-Ion Batteries

2010 ◽  
Vol 150-151 ◽  
pp. 1387-1390
Author(s):  
Cheng Zhao Yang ◽  
Guo Qing Zhang ◽  
Lei Zhang ◽  
Li Ma
Keyword(s):  
Carbon Nanotube ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Anode Materials ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Pure Sno2 ◽  
Composite Anode ◽  
Carbon Nanotube Composite ◽  
Charge Discharge

A composite anode material of SnO2/graphite(GT)/carbon nanotube(CNT) for lithium-ion batteries was prepared by ball milling. It was observed that SnO2 particles were homogeneously embedded into the buffering matrix of graphite particles. This composite anode material showed an increased initial coulombic efficiencies of 56% in the first cycle, and after 25 charge–discharge cycles, a reversible capacity of 431 mAh/g was obtained, much higher than 282 mAh/g of SnO2/GT composite and 177 mAh/g of pure SnO2. The improvement in the electrochemical properties of the composite anode materials was mainly attributed to good electric conductivity of the CNT network and the excellent resiliency.

Improved electrochemical performance of tin-sulfide anodes for sodium-ion batteries

2015 ◽  
Vol 3 (33) ◽  
pp. 16971-16977 ◽  
Author(s):  
Ying Ching Lu ◽  
Chuze Ma ◽  
Judith Alvarado ◽  
Nikolay Dimov ◽  
Ying Shirley Meng ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Tin Sulfide

Due to their highly reversible capacity, tin-sulfide-based materials have gained attention as potential anodes for sodium-ion and lithium-ion batteries.

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