Synthesis and characterizations of CoCr2O4/C composite using high energy ball-milling technique as novel anode materials for Li-ion batteries

2019 ◽  
Vol 96 ◽  
pp. 205-213 ◽  
Author(s):  
Jun-Ying Huang ◽  
Wei-Ren Liu
Keyword(s):  
Ball Milling ◽  
Anode Materials ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Li Ion Batteries ◽  
Energy Ball ◽  
Li Ion ◽  
Ball Milling Technique

SnSb/TiO2/C nanocomposite fabricated by high energy ball milling for high-performance lithium-ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (39) ◽  
pp. 32462-32466 ◽  
Author(s):  
Haihua Zhao ◽  
Wen Qi ◽  
Xuan Li ◽  
Hong Zeng ◽  
Ying Wu ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Ball Milling ◽  
High Performance ◽  
High Capacity ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Li Ion Batteries ◽  
Energy Ball ◽  
Li Ion

Alloy anodes for Li-ion batteries (LIBs) have attracted great interest due to their high capacity.

Effects of iron impurities in mechanical alloying using steel media

1993 ◽  
Vol 8 (2) ◽  
pp. 239-241 ◽  
Author(s):  
P.J. Yvon ◽  
R.B. Schwarz
Keyword(s):  
Mechanical Alloying ◽  
Ball Milling ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Metastable Phases ◽  
Iron Contamination ◽  
Energy Ball ◽  
Ball Milling Technique

Mechanical alloying, a high-energy ball-milling technique, is now widely used for preparing alloy powders with metastable phases (crystalline or amorphous). The technique, however, may contaminate the powder with material eroded from the vial and milling media. We report on the analysis and effects of iron contamination on Al25Ge75 powders that we prepared by mechanically alloying mixtures of aluminum and germanium powders, using different mechanical alloying apparatuses.

Diffusion and Ionic Conduction in Nanocrystalline Ceramics

2001 ◽  
Vol 676 ◽  
Author(s):  
Paul Heitjans ◽  
Sylvio Indris
Keyword(s):  
Impedance Spectroscopy ◽  
Ball Milling ◽  
Ionic Conduction ◽  
Nmr Relaxation ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Nanocrystalline Ceramics ◽  
Energy Ball ◽  
Li Ion ◽  
Mobile Ions

ABSTRACTDiffusion and ionic conduction in nanocrystalline ceramics, both monophase and composite, was studied by NMR relaxation and NMR lineshape as well as impedance spectroscopy. Measurements were mainly done on Li ion conductors prepared by high-energy ball milling. It was possible to discriminate between mobile ions in the interfacial regions and immobile ions in the grains. In general the diffusivity and conductivity are enhanced in the nanocrystalline monophase system as compared to the microcrystalline one, e. g. by about four orders of magnitude in the case of CaF2. An exception is, e. g., Li2O where the nano- and microcrystalline forms have similar conductivities. However, when the nanocrystalline insulator B2O3 is added to nanocrystalline Li2O the conductivity of the composite increases whereas it decreases in the corresponding microcrystalline system.

Effect of High-Energy Ball Milling on the Charge-Discharge Behaviour of LiCo0.3Ni0.7O2

2014 ◽  
Vol 895 ◽  
pp. 400-403 ◽  
Author(s):  
Kelimah Elong ◽  
Norlida Kamarulzaman
Keyword(s):  
Ball Milling ◽  
Volume Ratio ◽  
Combustion Method ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Voltage Range ◽  
Lithium Secondary Batteries ◽  
Energy Ball ◽  
Li Ion ◽  
Charge Discharge

Li-ion cathode materials in the nanodimension should show improvement in capacity retention from the normal material. This is because the electrochemical performance of the cathode material in lithium secondary batteries depends on the electrochemical redox reaction which is affected by the surface area to volume ratio of the particles. In this work, LiCo0.3Ni0.7O2 powder will be prepared via a self-propagating combustion method and the high-energy ball milling method will be used to prepare LiCo0.3Ni0.7O2 nanopowders. X-Ray Diffraction (XRD) and Field Emission Scanning Electron Microscopy (FESEM) are used to characterize the materials. The materials are observed to be phase pure. Li-ion cells are then fabricated and tested. The cells are subjected to a series of charge-discharge cycling in the voltage range of 3.0 to 4.3 V. It was found that the nanomaterial exhibit specific capacities less than that of the normal material.

The Study of Hydrogen Sorption Properties of Mg17Al12La0.45

2011 ◽  
Vol 311-313 ◽  
pp. 1351-1356
Author(s):  
Li Juan Pang ◽  
Yun Gui Chen ◽  
Chao Ling Wu ◽  
Xue Feng Zhang ◽  
Gang Deng
Keyword(s):  
Ball Milling ◽  
Hydrogen Desorption ◽  
High Energy ◽  
Milling Process ◽  
High Energy Ball Milling ◽  
Sorption Properties ◽  
Hydrogen Sorption ◽  
Ball Milling Process ◽  
Energy Ball ◽  
Ball Milling Technique

Mg17Al12and rare earth improved Mg17Al12La0.45alloys were prepared by resistance melting method. The hydrogen sorption properties of the alloys with and without ball-milling process were investigated with the help of PCT measurements. The phase compositions of the experimental alloys were determined through powder X-Ray diffraction. It is found that the introduction of La and the high energy ball-milling technique could remarkably improve the hydrogen sorption capability of Mg17Al12. For Mg17Al12La0.45alloy, the hydrogen absorption starts at 473K and the hydridying rate increases at each temperature (573K, 523K, 473K) after high energy ball-milling process. The hydrogen desorption capacity of this alloy is 4wt% at 573K. XRD shows that there are two phases Mg17Al12and Al2La0.15Mg0.85after melting and Al2La0.15Mg0.85phase always exists during hydrogen sorption cycles of Mg17Al12La0.45.

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