Uniqueness of Co3O4/Nitrogen-Doped Carbon Nano-spheres Derived from Metal-Organic Framework: Insight of Superior Lithium Storage Capabilities Beyond Theoretical and Electrochemical Features in High Voltage Battery
Type
ArticleAuthors
Ming, Jun
Wang, Limin
Xue, Hongjin
Na, Zhaolin
Wu, Yingqiang
Wang, Xuxu
Li, Qian
Liang, Fei
Yin, Dongming
KAUST Department
Physical Science and Engineering (PSE) DivisionDate
2018Permanent link to this record
http://hdl.handle.net/10754/627986
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Developing versatile strategy to create new structured materials with hetero-atomic doping has become one of the fascinating research topics owing to their fantastic properties, while the popular metal-organic-framework opens a promising avenue to design diverse architectures. Herein, an intriguing kind of spherical N-doped porous carbon (i.e., N-C) particles containing numerous Co3O4 nanocrystals (i.e., Co3O4/N-C) is introduced, in which the Zn-Co based Prussian blue analogue act as a sacrificial template and carbon source while the volatilization of zinc and oxidation of Co can produce rich pores and form highly active Co3O4 nanocrystals. The resultant Co3O4/N-C particles has an extremely high lithium storage capacity of 1255 mA h g-1 and excellent rate capability even to the current of 2000 mA g-1. The long cycle life over 500 cycles at 1000 mA g-1 with the high capacity of 798 mAh g-1 further demonstrates its prominent properties. Our kinetics analysis reveals that the high performances beyond theoretical mainly stem from the active Co3O4 nanocrystals, fast diffusion of lithium ions within the structure and pseudocapacitive behaviors; therefore it further demonstrates impressive stability and rate capabilities in lithium ion battery versus the cathode of lithium layered oxide even at high voltage conditions.Citation
Ming J, Wang L, Xue H, Na Z, Wu Y, et al. (2018) Uniqueness of Co3O4/Nitrogen-Doped Carbon Nano-spheres Derived from Metal-Organic Framework: Insight of Superior Lithium Storage Capabilities Beyond Theoretical and Electrochemical Features in High Voltage Battery. Journal of Materials Chemistry A. Available: http://dx.doi.org/10.1039/c8ta03959c.Sponsors
This work is financially supported by the National Natural Science Foundation of China (Grant 21521092).Publisher
Royal Society of Chemistry (RSC)Journal
Journal of Materials Chemistry Aae974a485f413a2113503eed53cd6c53
10.1039/c8ta03959c