Open AccessReduced Graphene Oxide Wrapped Ultra-thin Silicon Nanowires for Lithium Ion Battery Anodes
Author(s) -
Fuming Sun,
Zhengguang Hu,
Leyuan Wu,
Jun Chen,
Jie Luo,
Xiaoling Wu,
Guoan Cheng,
Ruiting Zheng
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1520/1/012011
Subject(s) - anode , graphene , materials science , silicon , oxide , lithium (medication) , etching (microfabrication) , nanotechnology , chemical engineering , nanowire battery , optoelectronics , layer (electronics) , electrode , lithium vanadium phosphate battery , metallurgy , chemistry , medicine , endocrinology , engineering
Nowadays, silicon is becoming a promising kind of material for lithium ion batteries (LIBs) because of its high theoretical capacities. In this paper, we developed a new Bi-metal assisted chemical etching (BACE) method to fabricate ultrathin silicon nanowires (UTSiNWs) with an average diameter of 30 nm, and fabricate reduced graphene oxide wrapped UTSiNWs (UTSiNWs@rGO). The UTSiNWs and UTSiNWs@rGO anode have a discharge capacity of 1011.6 mAh/g and 2013.1 mAh/g under the current density of 300 mA/g. Retention rate of the UTSiNWs and UTSiNWs@rGO anode are 93.3% and 76.6% respectively. Although the discharge capacity decreased due to the side reactions caused by the increased interface, the discharge capacity of UTSiNWs@rGO anode is still higher that of UTSiNWs anode because of the electron conductivity of the anode is improved.