期刊
NEW JOURNAL OF CHEMISTRY
卷 38, 期 2, 页码 616-623出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3nj01319g
关键词
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资金
- National Key Project on Basic Research [2012CB722705]
- National High Technology Research and Development Program of China [2012AA110407]
- Natural Science Foundation of China [21103096, U1232104]
- Scientific Research Foundation of Department of Science and Technology of Shandong Province [ZR2010BM024]
- Taishan Scholars Program of Shandong Province
- Project of Shandong Province Higher Educational Science and Technology Program [J10LD12]
Carbon modified lithium titanate (Li4Ti5O12) anode nanocrystals for Li-ion batteries were synthesized by directly treating the titanium alkoxide and lithium acetate ethanol solution via the Reaction under Autogenic Pressure at Elevated Temperature (abbreviated to RAPET). The mixture of the liquid precursors decomposed during the RAPET process and then reacted in situ and transformed into carbon-modified Li4Ti5O12 anode nanocrystals. The organic moieties in the titanium alkoxide and the lithium salt provided both the oxygen and carbon for the synthesis. The resulting products were characterized by X-ray diffraction (XRD), elemental analysis, scanning electronic microscopy (SEM), high resolution transmission electron microscopy (HR-TEM), nitrogen adsorption-desorption measurements, cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and galvanostatic charge-discharge testing. The influences of the titanium alkoxide precursors, i.e. the length of the alkoxy group, on the properties of the final products and the presence of the in situ resulting carbon on the electrochemical performance have been investigated.
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