Top-Down Strategy to Synthesize Mesoporous Dual Carbon Armored MnO Nanoparticles for Lithium-Ion Battery Anodes.
To overcome inferior rate capability and cycle stability of MnO-based materials as a lithium-ion battery anode associated with the pulverization and gradual aggregation during the conversion process, we constructed robust mesoporous N-doped carbon (N-C) protected MnO nanoparticles on reduced graphene oxide (rGO) (MnO@N-C/rGO) by a simple top-down incorporation strategy. Such dual carbon protection endows MnO@N-C/rGO with excellent structural stability and enhanced charge transfer kinetics. At 100 mA g-1, it exhibits superior rate capability as high as 864.7 mAh g-1, undergoing the deep charge/discharge for 70 cycles and outstanding cyclic stability (after 1300 cyclic tests at 2000 mA g-1; 425.0 mAh g-1remains, accompanying merely 0.004% capacity decay per cycle). This facile method provides a novel strategy for synthesis of porous electrodes by making use of highly insulating materials.
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , Wuhan 430070, China.
Wei
W
Zhang
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , Wuhan 430070, China.
Jiannian
J
Li
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , Wuhan 430070, China.
Jie
J
Zhang
WUT-Harvard Joint Nano Key Laboratory, Wuhan University of Technology , Wuhan 430070, China.
Jinzhi
J
Sheng
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , Wuhan 430070, China.
Ting
T
He
Meiyue
M
Tian
Key Laboratory of Applied Chemistry, Yanshan University , Qinhuangdao 066004, China.
Yufeng
Y
Zhao
School of Automation, Wuhan University of Technology , Wuhan 430070, China.
Changjun
C
Xie
WUT-Harvard Joint Nano Key Laboratory, Wuhan University of Technology , Wuhan 430070, China.
Liqiang
http://orcid.org/0000-0003-4259-7725
L
Mai
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , Wuhan 430070, China.
Shichun
http://orcid.org/0000-0002-5377-2376
S
Mu
anode; graphene oxide; lithium-ion battery; manganese monoxide; nitrogen doping