Advanced electrochemical performances of Li4Ti5O12/Ag prepared by a facile synthesis route

作者：Ge Hao; Chen Li; Lin Shen; Shi Xicheng; Song Xi Ming^*

来源：Ionics, 2014, 20(8): 1189-1192.

DOI：10.1007/s11581-014-1149-5

• Spinel Li4Ti5O12
• Grain size
• Electrodes
• Lithium-ion battery

Spinel Li4Ti5O12 coated by highly dispersed nanosized Ag particles was synthesized via a facile and effective ultrasonic-assisted method in this paper. X-ray diffraction (XRD) results indicated that Ag was not doped into the lattice of spinel Li4Ti5O12. The as-synthesized Li4Ti5O12/Ag exhibited enhanced electronic conductivity and excellent electrochemical performances. Its electronic conductivity was increased about four times compared to that of the pristine Li4Ti5O12. Even at 10 C rate, the as-synthesized Li4Ti5O12/Ag could keep 86.5 % of the reversible capacity at 1 C rate and its reversible capacity was higher than 140 mAhg(-1) whereas those were 75.3 % and 118 mAhg(-1) for the pristine Li4Ti5O12.

• 出版日期2014-8
• 单位辽宁大学