TY - JOUR
T1 - Preparation of porous silicon/carbon microspheres as high performance anode materials for lithium ion batteries
AU - Ren, Wenfeng
AU - Zhang, Zailei
AU - Wang, Yanhong
AU - Tan, Qiangqiang
AU - Zhong, Ziyi
AU - Su, Fabing
N1 - Publisher Copyright:
© The Royal Society of Chemistry 2015.
PY - 2015/3/21
Y1 - 2015/3/21
N2 - We report the preparation of porous silicon/carbon microspheres (GPSCMs) by the ball milling and spray drying methods followed by carbonization and chemical vapor deposition processes, in which, the waste fine graphitized needle coke and silicon nanoparticles were employed as the carbon and silicon sources respectively, and sucrose as the binder. The samples were characterized by X-ray diffraction, transmission electron microscopy, scanning electron microscopy, nitrogen adsorption, thermogravimetric analysis, and Raman spectroscopy. It was found that GPSCMs had spherical sizes of 8-30 μm and surface areas between 20 and 90 m2 g-1. When used as the anode materials for lithium ion batteries, the average charge capacity was 589 mA h g-1 at a current density of 50 mA g-1, much higher than that of the commercial graphite microspheres (GMs). Furthermore, GPSCMs exhibited much better rate performance than the commercial GMs, making them promising for use as the next generation anode materials in lithium ion batteries.
AB - We report the preparation of porous silicon/carbon microspheres (GPSCMs) by the ball milling and spray drying methods followed by carbonization and chemical vapor deposition processes, in which, the waste fine graphitized needle coke and silicon nanoparticles were employed as the carbon and silicon sources respectively, and sucrose as the binder. The samples were characterized by X-ray diffraction, transmission electron microscopy, scanning electron microscopy, nitrogen adsorption, thermogravimetric analysis, and Raman spectroscopy. It was found that GPSCMs had spherical sizes of 8-30 μm and surface areas between 20 and 90 m2 g-1. When used as the anode materials for lithium ion batteries, the average charge capacity was 589 mA h g-1 at a current density of 50 mA g-1, much higher than that of the commercial graphite microspheres (GMs). Furthermore, GPSCMs exhibited much better rate performance than the commercial GMs, making them promising for use as the next generation anode materials in lithium ion batteries.
UR - http://www.scopus.com/inward/record.url?scp=84924238932&partnerID=8YFLogxK
U2 - 10.1039/c4ta07093c
DO - 10.1039/c4ta07093c
M3 - 文章
AN - SCOPUS:84924238932
SN - 2050-7488
VL - 3
SP - 5859
EP - 5865
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
IS - 11
ER -
