Reversible and high-capacity SnO2/carbon cloth composite electrode materials prepared by magnetron sputtering for Li-ion batteries

摘要

The flexible electrode material of SnO2/carbon cloth (SnO2/CC) is fabricated by RF magnetron sputtering method. As an anode material of lithium ion batteries, the SnO2/CC electrode exhibits more excellent cycling stability and rate capability than that of the pure carbon cloth and SnO2. The reversible capacity always maintain about 1.98 mAh/cm(2) during 50 cycles, which is higher than that of the pure CC (about 1.61 mAh/cm(2)) and SnO2 (about 0.08 mAh/cm(2)). After 100 cycles, the capacity of SnO2/CC sample is 1.85 mAh/cm(2), still retaining 89.4% of the initial capacity. The good electrochemical properties of SnO2/CC are mainly caused by the high surface area, porous structure and the intrinsic soft characteristics of CC, which can effectively accommodate the volume charge during charge and discharge process. (C) 2016 Elsevier B.V. All rights reserved.