کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1464391 | 989661 | 2009 | 12 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Combustion synthesis of high-performance Li4Ti5O12 for secondary Li-ion battery Combustion synthesis of high-performance Li4Ti5O12 for secondary Li-ion battery](/preview/png/1464391.png)
Spinel Li4Ti5O12 was synthesized by a simple glycine-nitrate auto-combustion by applying aqueous medium and constricting the reactions in the pores of cellulose fibers. The products from the auto-combustion and further calcination at various temperatures were characterized by XRD, SEM, BET surface area and TEM examinations. Pure phase and well-crystallized nano-Li4Ti5O12 oxides were obtained at a calcination temperature of 700 °C or higher. The 700 °C calcined one shows the best and high electrochemical performance, which reached a capacity of ∼125 mAh/g at 10 C discharge rate with fairly stable cycling performance even at 40 °C. Electrochemical impedance spectroscopy tests demonstrated that the surface reaction kinetics of Li4Ti5O12 was improved significantly with the increase of its electronic conductivity.
Journal: Ceramics International - Volume 35, Issue 5, July 2009, Pages 1757–1768