Статья

A facile synthesis of graphite/silicon/graphene spherical composite anode for lithium-ion batteries

Lei GanSchool of Metallurgical Science and Engineering, Central South University, Changsha City, Hunan Province 410083, PR ChinaHuajun GuoSchool of Metallurgical Science and Engineering, Central South University, Changsha City, Hunan Province 410083, PR ChinaZhixing WangSchool of Metallurgical Science and Engineering, Central South University, Changsha City, Hunan Province 410083, PR ChinaXinhai LiSchool of Metallurgical Science and Engineering, Central South University, Changsha City, Hunan Province 410083, PR ChinaWenjie PengSchool of Metallurgical Science and Engineering, Central South University, Changsha City, Hunan Province 410083, PR ChinaJiexi WangSchool of Metallurgical Science and Engineering, Central South University, Changsha City, Hunan Province 410083, PR ChinaSilin HuangSchool of Metallurgical Science and Engineering, Central South University, Changsha City, Hunan Province 410083, PR ChinaMingru SuSchool of Metallurgical Science and Engineering, Central South University, Changsha City, Hunan Province 410083, PR China

2013en

ABI

Аннотация

The Graphite/Silicon@reGO composite was synthesized via spray drying and subsequent annealing. According to XRD, Raman spectroscopy and FT-IR, graphene was demonstrated to be existed in the composite. Moreover, SEM and TEM were also used to illustrate the morphology of Graphite/Silicon@reGO. Used as anode for lithium-ion battery, it exhibited good cyclability with a high reversible charge capacity of 575.1 mAh g−1 and showed a capacity retention ratio of 73.1% after 50 cycles at a current density of 50 mA g−1. It also presented good rate capability at different rates of 50–1000 mA g−1. EIS test showed that the composite electrode had a lower SEI resistance and charge-transfer resistance due to the existence of graphene.

Перевод пока недоступен

Идентификаторы

DOI: 10.1016/j.electacta.2013.04.083

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar