Template-assisted sol–gel synthesis of porous MoS2/C nanocomposites as anode materials for lithium-ion batteries

Abstract This work describes comparative study on the application of Li4Ti5O12 (LTO) as anode materials for lithium-ion batteries which were successfully prepared by sol-gel synthesis with the use of two titanium sources. One of them was anatase-type titanium dioxide (TiO2), whereas the second was tetrabutyl titanate (TBT). Both obtained LTO materials were very similar in terms of their crystallinity and purity. In turn, the sample synthetized with TBT source revealed better particle dispersibility, and its particles were slightly lower in size. These particular features resulted in higher Li+ diffusion coefficient and better kinetic of Li+ ions during charge transfer reactions for the LTO synthetized with TBT source. This reflected in specific capacitance values for both electrodes which equalled 150 mAh g−1, 120 mAh g−1, and 63 mAh g−1 for TBT-LTO and 120 mAh g−1, 80 mAh g−1, and 58 mAh g−1 for TiO2-LTO at C-rates of 1, 5, and 10 C, respectively.

Download Full-text

Sol–gel synthesis of low carbon content and low surface area Li4Ti5O12/carbon black composites as high-rate anode materials for lithium ion batteries

RSC Advances ◽

10.1039/c5ra11586h ◽

2015 ◽

Vol 5 (91) ◽

pp. 74381-74390 ◽

Cited By ~ 11

Author(s):

Chien-Min Chang ◽

Yi-Chih Chen ◽

Wei-Lun Ma ◽

Pin-Han Wang ◽

Ching-Feng Lee ◽

...

Keyword(s):

Carbon Source ◽

Carbon Black ◽

Lithium Ion Batteries ◽

Anode Materials ◽

Sol Gel ◽

Lithium Ion ◽

High Rate ◽

Low Carbon ◽

Composite Anode ◽

Sol Gel Synthesis

Li4Ti5O12/carbon black composite anode materials (LTO/CB) with various amounts of carbon black (CB) as an extra carbon source are synthesized by the sol–gel method for use in LIBs.

Download Full-text

Sol–gel synthesis of nanocrystal-constructed hierarchically porous TiO2 based composites for lithium ion batteries

RSC Advances ◽

10.1039/c5ra03491d ◽

2015 ◽

Vol 5 (31) ◽

pp. 24803-24813 ◽

Cited By ~ 19

Author(s):

Wenjun Zhu ◽

Hui Yang ◽

Kazuki Nakanishi ◽

Kazuyoshi Kanamori ◽

Xingzhong Guo

Keyword(s):

Lithium Ion Batteries ◽

Anode Materials ◽

Sol Gel ◽

Rate Capability ◽

Lithium Ion ◽

Gel Method ◽

Hierarchically Porous ◽

Sol Gel Method ◽

Excellent Cycling Stability ◽

Sol Gel Synthesis

Hierarchically porous TiO2 based composites have been synthesized by a facile sol–gel method. As anode materials for lithium-ion batteries (LIBs), which exhibit excellent cycling stability and superior rate capability.

Download Full-text

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

Journal of Sol-Gel Science and Technology ◽

10.1007/s10971-021-05523-z ◽

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.

Download Full-text

Nano MgFe2O4 synthesized by sol–gel auto-combustion method as anode materials for lithium ion batteries

Journal of Sol-Gel Science and Technology ◽

10.1007/s10971-013-2967-z ◽

2013 ◽

Vol 66 (3) ◽

pp. 540-543 ◽

Cited By ~ 24

Author(s):

Yanhong Yin ◽

Bing Zhang ◽

Xiaoting Zhang ◽

Jingjing Xu ◽

Shuting Yang

Keyword(s):

Lithium Ion Batteries ◽

Anode Materials ◽

Sol Gel ◽

Lithium Ion ◽

Combustion Method ◽

Auto Combustion

Download Full-text

NANOSTRUCTURED SnO2/C COMPOSITE ANODES IN LITHIUM-ION BATTERIES

International Journal of Nanoscience ◽

10.1142/s0219581x03001322 ◽

2003 ◽

Vol 02 (04n05) ◽

pp. 299-306 ◽

Cited By ~ 1

Author(s):

CHIEN-TE HSIEH ◽

JIN-MING CHEN ◽

HSIU-WEN HUANG

Keyword(s):

Lithium Ion Batteries ◽

Discharge Capacity ◽

Coulombic Efficiency ◽

Sol Gel ◽

Lithium Ion ◽

Surface Characteristics ◽

Carbon Surface ◽

Cyclic Voltammograms ◽

Composite Anodes ◽

Sol Gel Synthesis

Nanostructured SnO 2/ C composites used as anode materials were prepared by sol–gel synthesis to explore electrochemical properties in lithium-ion batteries. Surface characteristics of the SnO 2/ C nanocomposite were analyzed by X-ray diffraction (XRD) and transmission electron microscopy (TEM). It was found that nanocrystalline SnO 2/ C with a grain size of 20–50 nm was uniformly dispersed on the carbon surface. After nanocrytalline SnO 2 coated onto carbon, the discharge capacity showed an increase up to 23%, i.e., from 300 to 370 mAh/g at a current density of 0.6 mA/cm2. The nanocomposite anode can achieve a fairly stable discharge capacity and excellent Coulombic efficiency (>99.5%) over 50 cycles. Cyclic voltammograms indicated that the improvements on capacity and cycleability were due to reversible alloying of nanosized Sn and Li on carbon surface.

Download Full-text