Investigation of Capacity Fading on Li-Rich Layered Composite Cathode Materials for Li Ion Batteries

2019 ◽  
Keyword(s):  
Cathode Materials ◽  
Composite Cathode ◽  
Layered Composite ◽  
Li Ion Batteries ◽  
Capacity Fading ◽  
Li Ion

scholarly journals Preparation and Characterisation of LiFePO4/CNT Material for Li-Ion Batteries

2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Rushanah Mohamed ◽  
Shan Ji ◽  
Vladimir Linkov
Keyword(s):  
Carbon Nanotubes ◽  
Discharge Capacity ◽  
Cathode Materials ◽  
High Efficiency ◽  
Discharge Rate ◽  
Composite Cathode ◽  
Electrochemical Performances ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Cycle Efficiency

Li-ion battery cathode materials were synthesised via a mechanical activation and thermal treatment process and systematically studied. LiFePO4/CNT composite cathode materials were successfully prepared from LiFePO4material. The synthesis technique involved growth of carbon nanotubes onto the LiFePO4using a novel spray pyrolysis-modified CVD technique. The technique yielded LiFePO4/CNT composite cathode material displaying good electrochemical activity. The composite cathode exhibited excellent electrochemical performances with 163 mAh/g discharge capacity with 94% cycle efficiency at a 0.1 C discharge rate in the first cycle, with a capacity fade of approximately 10% after 30 cycles. The results indicate that carbon nanotube addition can enable LiFePO4to display a higher discharge capacity at a fast rate with high efficiency. The research is of potential interest for the application of carbon nanotubes as a new conducting additive in cathode preparation and for the development of high-power Li-ion batteries for hybrid electric vehicles.

Studies of selected synthesis procedures of the conducting LiFePO4-based composite cathode materials for Li-ion batteries

2007 ◽  
Vol 173 (2) ◽  
pp. 700-706 ◽  
Author(s):  
W. Ojczyk ◽  
J. Marzec ◽  
K. Świerczek ◽  
W. Zając ◽  
M. Molenda ◽  
...  
Keyword(s):  
Cathode Materials ◽  
Composite Cathode ◽  
Li Ion Batteries ◽  
Li Ion

scholarly journals A Comparative Review of Metal Oxide Surface Coatings on Three Families of Cathode Materials for Lithium Ion Batteries

Coatings ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 744
Author(s):  
Thabang Ronny Somo ◽  
Tumiso Eminence Mabokela ◽  
Daniel Malesela Teffu ◽  
Tshepo Kgokane Sekgobela ◽  
Brian Ramogayana ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Metal Ion ◽  
Lithium Ion ◽  
Li Ion Batteries ◽  
Oxide Coatings ◽  
Capacity Fading ◽  
Li Ion ◽  
Metal Oxide Coatings

In the recent years, lithium-ion batteries have prevailed and dominated as the primary power sources for mobile electronic applications. Equally, their use in electric resources of transportation and other high-level applications is hindered to some certain extent. As a result, innovative fabrication of lithium-ion batteries based on best performing cathode materials should be developed as electrochemical performances of batteries depends largely on the electrode materials. Elemental doping and coating of cathode materials as a way of upgrading Li-ion batteries have gained interest and have modified most of the commonly used cathode materials. This has resulted in enhanced penetration of Li-ions, ionic mobility, electric conductivity and cyclability, with lesser capacity fading compared to traditional parent materials. The current paper reviews the role and effect of metal oxides as coatings for improvement of cathode materials in Li-ion batteries. For layered cathode materials, a clear evaluation of how metal oxide coatings sweep of metal ion dissolution, phase transitions and hydrofluoric acid attacks is detailed. Whereas the effective ways in which metal oxides suppress metal ion dissolution and capacity fading related to spinel cathode materials are explained. Lastly, challenges faced by olivine-type cathode materials, namely; low electronic conductivity and diffusion coefficient of Li+ ion, are discussed and recent findings on how metal oxide coatings could curb such limitations are outlined.

Formation of the Spinel Phase in the Layered Composite Cathode Used in Li-Ion Batteries

ACS Nano ◽  
2012 ◽  
Vol 7 (1) ◽  
pp. 760-767 ◽  
Author(s):  
Meng Gu ◽  
Ilias Belharouak ◽  
Jianming Zheng ◽  
Huiming Wu ◽  
Jie Xiao ◽  
...  
Keyword(s):  
Spinel Phase ◽  
Composite Cathode ◽  
Layered Composite ◽  
Li Ion Batteries ◽  
Li Ion

Soft-template fabrication of hierarchical nanoparticle iron fluoride as high-capacity cathode materials for Li-ion batteries

2020 ◽  
Vol 364 ◽  
pp. 137293
Author(s):  
Jinfang Lin ◽  
Shuyi Chen ◽  
Licai Zhu ◽  
Zhongzhi Yuan ◽  
Jincheng Liu
Keyword(s):  
Cathode Materials ◽  
High Capacity ◽  
Soft Template ◽  
Li Ion Batteries ◽  
Iron Fluoride ◽  
Li Ion
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