Interlayer catalytic exfoliation realizing scalable production of large-size pristine few-layer graphene.
Mass production of reduced graphene oxide and graphene nanoplatelets has recently been achieved. However, a great challenge still remains in realizing large-quantity and high-quality production of large-size thin few-layer graphene (FLG). Here, we create a novel route to solve the issue by employing one-time-only interlayer catalytic exfoliation (ICE) of salt-intercalated graphite. The typical FLG with a large lateral size of tens of microns and a thickness less than 2 nm have been obtained by a mild and durative ICE. The high-quality graphene layers preserve intact basal crystal planes owing to avoidance of the degradation reaction during both intercalation and ICE. Furthermore, we reveal that the high-quality FLG ensures a remarkable lithium-storage stability (>1,000 cycles) and a large reversible specific capacity (>600 mAh g(-1)). This simple and scalable technique acquiring high-quality FLG offers considerable potential for future realistic applications.
Key Laboratory of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, Jiangsu 215123, People's Republic of China.
Xiumei
X
Geng
Yufen
Y
Guo
Dongfang
D
Li
Weiwei
W
Li
Chao
C
Zhu
Xiangfei
X
Wei
Mingliang
M
Chen
Song
S
Gao
Shengqiang
S
Qiu
Youpin
Y
Gong
Liqiong
L
Wu
Mingsheng
M
Long
Mengtao
M
Sun
Gebo
G
Pan
Liwei
L
Liu