Erratum to “Sol–gel synthesis of Li Ni0.8Co0.2O2 via an oxalate route and its electrochemical performance as an intercalation material for lithium batteries” [Mater. Chem. Phy. 79 (2003) 21–29]

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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Li0.95Na0.05Ti2(PO4)3/C with Good Performance as Anode Material for Aqueous Rechargeable Lithium Batteries

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.989-994.316 ◽

2014 ◽

Vol 989-994 ◽

pp. 316-319 ◽

Cited By ~ 2

Author(s):

Jing Zhu ◽

Yong Guang Liu ◽

Qing Qing Tian ◽

Ling Wang ◽

Ji Lin Cao

Keyword(s):

Cyclic Voltammetry ◽

Electrochemical Performance ◽

Anode Material ◽

Lithium Batteries ◽

Sol Gel ◽

Nasicon Structure ◽

Galvanostatic Charge ◽

Rechargeable Lithium Batteries ◽

Structure And Morphology ◽

Charge Discharge

Li0.95Na0.05Ti2(PO4)3/C nanocomposite was prepared by sol-gel method.The structure and morphology of the samples were characterized by XRD, SEM which showed the particles had typical NASICON structure and diameter range from 400~500nm. The electrochemical performance were tested by cyclic voltammetry and galvanostatic charge–discharge. Results show Li0.95Na0.05Ti2(PO4)3/C nanocomposite exhibitsmuch better electrochemical performance than bare Li0.95Na0.05Ti2(PO4)3.

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Processing and Performance of V205 Xerogel, Aerogel, and Aerogellike Materials as Lithium Intercalation Hosts

MRS Proceedings ◽

10.1557/proc-548-113 ◽

1998 ◽

Vol 548 ◽

Author(s):

Leland H. Manhart ◽

Jun John Xu ◽

Fabrice Coustier ◽

Stefano Passerini ◽

Boone B. Owens ◽

...

Keyword(s):

Lithium Batteries ◽

Methyl Formate ◽

Sol Gel ◽

Specific Capacity ◽

Lithium Intercalation ◽

Composite Electrodes ◽

Rechargeable Lithium Batteries ◽

Exchange Processes ◽

And Performance ◽

Sol Gel Synthesis

ABSTRACTVarious forms of vanadium pentoxide, including xerogel, aerogel, and aerogel-like forms, were prepared by sol-gel synthesis and processed by novel procedures following synthesis. It was demonstrated that the intrinsic thermodynamics of lithium intercalation of the ARG and ARG-like materials prepared by solvent exchange processes involving methyl formate (MF/ARG and MF/ARG-xslike) are identical, while they are drastically different from those of the parent XRG, which gives rise to significantly increased specific energies for the MF/ARG or MF/ARG-like as lithium intercalation hosts. All three forms are capable of reversibly intercalating up to four moles of Li+ ions per mole of V205 electrochemically and can be cathode candidates for rechargeable lithium batteries. Various processing methods for fabricating composite electrodes with the XRG led to specific capacity in the range of 300 to 350 mAh/g at C4Li/ 20 rate, and good cyclability.

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