文献类型：期刊文献

英文题名：Morphology Control and Cycling Stability of Sn Nanostructures and Sn/RGO Composites as Lithium-Ion Battery Anodes

作者：Li, Yang[1];Shi, Jiawei[1];Liang, Ying[1]

机构：[1]East China Univ Sci & Technol, Inst Nucl Technol & Applicat, Sch Sci, Meilong Rd 130, Shanghai 200237, Peoples R China

年份：2018

卷号：13

期号：3

起止页码：2366

外文期刊名：INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000429101700014)】；

基金：This work was supported by the National Natural Science Foundation of China (No. 51301071), National Training Programs of Innovation and Entrepreneurship for Undergraduates (Grant no. 201710251074).

语种：英文

外文关键词：Tin; reduced graphene oxide; nanostructures; Li-ion battery anodes

摘要：Crystalline tin (Sn) nanostructures and tin/reduced graphene oxide (Sn/RGO) composites have been synthesized with different morphologies via a facile reduction method. The effects of the morphology and particle size on the cycling stability of Sn and Sn/RGO as Li-ion battery anodes were investigated. For crystalline Sn, different morphologies of nanosheets, nanorods, nanospheres and nanoparticles were obtained by adjusting the reaction conditions, such as the reaction temperature and precursor. The associated electrodes exhibited a rapid capacity decay and weak cycling stability. However, small sized Sn particles displayed a relatively more stable cycling performance than that of the larger-sized particles. Compared with Sn, the cycling stability of the Sn/RGO composites was greatly improved with a long cycling life, even at a larger current density. For instance, the Sn/RGO electrode, in which spherical Sn nanoparticles with diameters of similar to 5 nm are uniformly dispersed on the RGO surface, delivers a reversible discharge capacity of 355 mAh g(-1) at the end of 50 cycles at 200 mA g(-1).