SnO<sub>2</sub>/Sn/Carbon nanohybrid lithium‐ion battery anode with high reversible capacity and excellent cyclic stability
Xiaoyan Wang, Tianle Zheng, Ya‐Jun Cheng, Shanshan Yin, Yonggao Xia, Qing Ji, Zhuijun Xu, Suzhe Liang, Liujia Ma, Xiuxia Zuo, Jianqiang Meng, Jin Zhu, Peter Müller‐Buschbaum
Abstract
Abstract Ultrafine SnO 2 /Sn nanoparticles encapsulated into the adjustable mesoporous carbon matrix has been successfully fabricated by a facile route. The mesoporous carbon effectively improve the conductivity of the SnO 2 /Sn, prevent the aggregation, accommodate the strain of volume change and provide high interface area with the electrolyte, thus resulting in excellent cycling performance. A reversible capacity of 1105 mAh g –1 still retained after 290 cycles at 200 mA g –1 , and the capacity still can keep at 107 mAh g –1 at high current density of 10 A g –1 . The porous structures by the in situ SiO x template provide an appropriate specific surface area, which contributes to a relatively high capacitive contribution.