期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：252
期号：2
页码：1-9
DOI：10.1088/1755-1315/252/2/022039
出版社：IOP Publishing
摘要：The poor electrical conductivity of Li4Ti5O12 has limited its practical application as high rates performance anode for lithium ion batteries. An oxygen deficient Li4Ti5O12 is investigated by a reducing atmosphere for lithium ion batteries in this work. Compared with pristine Li4Ti5O12 calcined at argon and air, the oxygen deficient Li4Ti5O12 exhibits significant improvement of electrochemical performance, it could deliver a specific capacity of 114.8 mAh g −1 even at a high charge/discharge rate of 10C and exhibit excellent cycling performance at low rates. However, more oxygen vacancies will increase the distortion of the lattice, causing serious deterioration in anode performance. Herein, an appropriate concentration of oxygen deficiency in oxygen-deficient Li4Ti5O12 is obtained by controlling the reducing atmosphere flow of ~170 mL/min to possess optimal electrochemical performance.
