Synthesis, characterization, and electrochemical performance of LiFePO4/C cathode materials for lithium ion batteries using various carbon sources: best results by using polystyrene nano-spheres

AbstractThe potential battery electrode material V2O3/C has been prepared using a sol–gel thermolysis technique, employing vanadyl hydroxide as precursor and different organic acids as both chelating agents and carbon sources. Composition and morphology of resultant materials were characterized by X-ray diffraction, Raman spectroscopy, scanning and transmission electron microscopies, physical sorption, and elemental analysis. Stability and electronic properties of model composites with chemically and physically integrated carbon were studied by means of quantum-chemical calculations. All fabricated composites are hierarchically structured and consist of carbon-covered microparticles assembled of polyhedral V2O3 nanograins with intrusions of amorphous carbon at the grain boundaries. Such V2O3/C phase separation is thermodynamically favored while formation of vanadium (oxy)carbides or heavily doped V2O3 is highly unlikely. When used as anode for lithium-ion batteries, the nanocomposite V2O3/C fabricated with citric acid exhibits superior electrochemical performance with an excellent cycle stability and a specific charge capacity of 335 mAh g−1 in cycle 95 at 100 mA g−1. We also find that the used carbon source has only minor effects on the materials’ electrochemical performance.

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Enhanced electrochemical performance of layered Li-rich cathode materials for lithium ion batteries via aluminum and boron dual-doping

Ceramics International ◽

10.1016/j.ceramint.2018.11.087 ◽

2019 ◽

Vol 45 (4) ◽

pp. 4184-4192 ◽

Cited By ~ 10

Author(s):

Zhongdong Peng ◽

Kunchang Mu ◽

Yanbing Cao ◽

Lian Xu ◽

Ke Du ◽

...

Keyword(s):

Electrochemical Performance ◽

Lithium Ion Batteries ◽

Cathode Materials ◽

Lithium Ion ◽

Enhanced Electrochemical Performance

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Spray-drying synthesized LiNi0.6Co0.2Mn0.2O2 and its electrochemical performance as cathode materials for lithium ion batteries

Powder Technology ◽

10.1016/j.powtec.2011.08.022 ◽

2011 ◽

Vol 214 (3) ◽

pp. 279-282 ◽

Cited By ~ 49

Author(s):

Peng Yue ◽

Zhixing Wang ◽

Wenjie Peng ◽

Lingjun Li ◽

Wei Chen ◽

...

Keyword(s):

Electrochemical Performance ◽

Lithium Ion Batteries ◽

Spray Drying ◽

Cathode Materials ◽

Lithium Ion

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Template-free formation of various V2O5 hierarchical structures as cathode materials for lithium-ion batteries

Journal of Materials Chemistry A ◽

10.1039/c6ta11194g ◽

2017 ◽

Vol 5 (14) ◽

pp. 6522-6531 ◽

Cited By ~ 34

Author(s):

Yining Ma ◽

Aibin Huang ◽

Huaijuan Zhou ◽

Shidong Ji ◽

Shuming Zhang ◽

...

Keyword(s):

Electrochemical Performance ◽

Lithium Ion Batteries ◽

Cathode Materials ◽

Hierarchical Structures ◽

Lithium Ion ◽

Excellent Electrochemical Performance ◽

Template Free

Various V2O5 hierarchical structures were successfully synthesized via a template-free method and exhibited excellent electrochemical performance.

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Improving the electrochemical properties of LiNi0.5Co0.2Mn0.3O2 at 4.6 V cutoff potential by surface coating with Li2TiO3 for lithium-ion batteries

Physical Chemistry Chemical Physics ◽

10.1039/c5cp05319f ◽

2015 ◽

Vol 17 (47) ◽

pp. 32033-32043 ◽

Cited By ~ 54

Author(s):

Jing Wang ◽

Yangyang Yu ◽

Bing Li ◽

Tao Fu ◽

Dongquan Xie ◽

...

Keyword(s):

Electrochemical Performance ◽

Electrochemical Properties ◽

Lithium Ion Batteries ◽

Cathode Materials ◽

Surface Coating ◽

Lithium Ion ◽

Coprecipitation Method

The Li2TiO3-coated LiNi0.5Co0.2Mn0.3O2 (LTO@NCM) cathode materials are synthesized via an in situ coprecipitation method to improve the electrochemical performance of NCM.

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