Title of article :
This report is a continuation of Part I of my studies of a non-aqueous sol–gel silica coating deposited on stainless steel SUS304. Part I discussed the microscopic observation of cracks, ridges and interlayers within the resulting silica coatings, and pro
Author/Authors :
Tao Yuan، نويسنده , , Rui Cai، نويسنده , , Ke Wang، نويسنده , , Ran Ran، نويسنده , , Shaomin Liu، نويسنده , , Zongping Shao، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2009
Abstract :
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.
Keywords :
Rate capacity , Li4Ti5O12 , Combustion synthesis , cellulose
Journal title :
Ceramics International
Journal title :
Ceramics International