scholarly journals Comparison of the so-called CGR and NCR cathodes in commercial lithium-ion batteries using in situ neutron powder diffraction

2014 ◽  
Vol 29 (S1) ◽  
pp. S35-S39 ◽  
Author(s):  
Moshiul Alam ◽  
Tracey Hanley ◽  
Wei Kong Pang ◽  
Vanessa K. Peterson ◽  
Neeraj Sharma
Keyword(s):  
Lithium Ion Batteries ◽  
Powder Diffraction ◽  
Layered Structure ◽  
Lithium Ion ◽  
Neutron Powder Diffraction ◽  
Charged State ◽  
Charge Discharge

The evolution of the 003 reflection of the layered Li(Ni,Co,Mn)O2 (CGR) and Li(Ni,Co,Al)O2 (NCR) cathodes in commercial 18650 lithium-ion batteries during charge/discharge were determined using in situ neutron powder diffraction. The 003 reflection is chosen as it is the stacking axis of the layered structure and shows the largest change during charge/discharge. The comparison between these two cathodes shows that the NCR cathode exhibits an unusual contraction near the charged state and during the potentiostatic step, where the potentiostatic step is recommended by the manufacturer. This feature is not shown to the same degree by the CGR cathode. The behavior is likely related to the compositions of these cathodes, the amount of Li/Ni site mixing and the presence of Al or Mn.

scholarly journals In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries

10.3791/52284 ◽  
2014 ◽  
Author(s):  
William R. Brant ◽  
Siegbert Schmid ◽  
Guodong Du ◽  
Helen E. A. Brand ◽  
Wei Kong Pang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Powder Diffraction ◽  
Lithium Ion ◽  
Neutron Powder Diffraction ◽  
Custom Made

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.

scholarly journals The High-Temperature Transformation from 1T- to 3R-LixTiS2 (x = 0.7, 0.9) as Observed in situ with Neutron Powder Diffraction

2015 ◽  
Vol 229 (9) ◽  
Author(s):  
Dennis Wiedemann ◽  
Suliman Nakhal ◽  
Anatoliy Senyshyn ◽  
Thomas Bredow ◽  
Martin Lerch
Keyword(s):  
High Temperature ◽  
Powder Diffraction ◽  
Electrode Material ◽  
Room Temperature ◽  
Lithium Ion ◽  
Neutron Powder Diffraction ◽  
Titanium Disulfide ◽  
Temperature Transformation

AbstractLayered titanium disulfide is used as lithium-ion intercalating electrode material in batteries. The room-temperature stable trigonal 1T polymorphs of the intercalates Li

In situ TEM study of lithiation into a PPy coated α-MnO2/graphene foam freestanding electrode

2018 ◽  
Vol 2 (8) ◽  
pp. 1481-1488 ◽  
Author(s):  
Mohammad Akbari Garakani ◽  
Sara Abouali ◽  
Jiang Cui ◽  
Jang-Kyo Kim
Keyword(s):  
Electrical Conductivity ◽  
Lithium Ion Batteries ◽  
Large Volume ◽  
Volume Expansion ◽  
Low Cost ◽  
Lithium Ion ◽  
In Situ Tem ◽  
The Many ◽  
Charge Discharge

Even with the many desirable properties, natural abundance and low cost of α-MnO2, its application as an anode in lithium-ion batteries has been limited because of its low intrinsic electrical conductivity and large volume expansion occurring during charge/discharge cycles.

Enhanced fast charge–discharge performance of Li4Ti5O12 as anode materials for lithium-ion batteries by Ce and CeO2 modification using a facile method

RSC Advances ◽  
2015 ◽  
Vol 5 (47) ◽  
pp. 37367-37376 ◽  
Author(s):  
Ting-Feng Yi ◽  
Jin-Zhu Wu ◽  
Mei Li ◽  
Yan-Rong Zhu ◽  
Ying Xie ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Electronic Conductivity ◽  
Lithium Ion ◽  
Solid State Method ◽  
Discharge Performance ◽  
Fast Charge ◽  
Improved Performance ◽  
Charge Discharge

Ce and CeO2in situ modified Li4Ti5O12 with fast charge–discharge performance for lithium-ion batteries were prepared by a solid-state method. The improved performance are found to be due to the increased ionic and electronic conductivity.

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