Grinding–sol–gel synthesis and electrochemical performance of mesoporous Li3V2(PO4)3 cathode materials

2013 ◽  
Vol 23 (2) ◽  
pp. 439-444 ◽  
Author(s):  
Guo-cong LIU ◽  
You-nian LIU ◽  
Su-qing LIU
Keyword(s):  
Electrochemical Performance ◽  
Cathode Materials ◽  
Sol Gel ◽  
Sol Gel Synthesis

scholarly journals V2O3/C composite fabricated by carboxylic acid-assisted sol–gel synthesis as anode material for lithium-ion batteries

2021 ◽  
Author(s):  
G. S. Zakharova ◽  
E. Thauer ◽  
A. N. Enyashin ◽  
L. F. Deeg ◽  
Q. Zhu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Sol Gel ◽  
Carbon Sources ◽  
Lithium Ion ◽  
X Ray Diffraction ◽  
Electron Microscopies ◽  
Transmission Electron ◽  
Battery Electrode ◽  
Sol Gel Synthesis

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.

Nanostructured intercalation compounds as cathode materials for supercapacitors

2014 ◽  
Vol 86 (5) ◽  
pp. 593-609 ◽  
Author(s):  
Yu Liu ◽  
Baihe Zhang ◽  
Faxing Wang ◽  
Zubiao Wen ◽  
Yuping Wu
Keyword(s):  
Electrochemical Performance ◽  
Recent Work ◽  
Cathode Materials ◽  
Sol Gel ◽  
Intercalation Compounds ◽  
Research Progress ◽  
Template Methods

AbstractThis article reviews the research progress in the intercalation compounds for cathode materials for supercapacitors. Typical methods to prepare various intercalation compounds with different nanostructures are summarized. More specifically, the approaches can be subdivided into physical routes such as sonication and microwaves, and chemical routes such as hydrothermal, sol-gel and template methods. The most recent work on nanostructured intercalation compounds including LiCoO2, LiMn2O4, Li[Ni1/3Co1/3Mn1/3]O2, Li1+xV3O8, NaxMnO2, and KxMnO2 is mainly focused including their preparation and electrochemical performance, and new trends in nanomaterials development for supercapacitors are pointed out.

Sol–gel synthesis and electrochemical properties of c-axis oriented LiCoO2 for lithium-ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (64) ◽  
pp. 51483-51488 ◽  
Author(s):  
Sen Gao ◽  
Wei Wei ◽  
Maixia Ma ◽  
Juanjuan Qi ◽  
Jie Yang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Electrochemical Properties ◽  
Lithium Ion Batteries ◽  
Sol Gel ◽  
Lithium Ion ◽  
Axis Orientation ◽  
Sol Gel Synthesis ◽  
The Relationship

This paper expounds upon the relationship between the electrochemical performance and the degree of c-axis orientation of LiCoO2.

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