Journal
MATERIALS TODAY ENERGY
Volume 19, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.mtener.2020.100593
Keywords
Electrochemical reaction kinetics; Cathode materials; N-S modified porous carbon; Long-term cycle stability
Funding
- National Key RAMP
- D Program of China [2020YFB1505603]
- National Natural Science Foundation of China [51631004]
- College of Materials Science and Engineering, Jilin University
Ask authors/readers for more resources
In this research, a hybrid structure composed of Mn doped V6O13 nanoribbons and N-S modified porous carbon structure has been designed, which significantly improves Zn2+ diffusion rate and electrochemical reaction kinetics through optimizing electron structure and enhancing conductivity, resulting in excellent cycle stability and super-rate performance.
In this research, a hybrid structure composed of Mn doped V6O13 nanoribbons and N-S modified porous carbon structure (MnVO/(SN)-C) has been designed. Unidimensional porous nanoribbon structure can form Zn2+ diffusion channels and enable the abundant energy-storage sites, while the doping of Mn ion into V6O13 can optimize the electronic structure simultaneously. The rigid and conductive N-S modified carbon structure can not only protect the nanoribbons, but also boost the electron transport rate in the electrochemical reaction, and thus depress the huge volume expansion and ameliorate conductivity. Therefore, Zn2+ diffusion rate and electrochemical reaction kinetics are greatly promoted, resulting in excellent cycle stability and super-rate performance of this cathode material. At the current density of 0.5 A g(-1), this electrode material can deliver favorable capacity of 414.2 mA h g(-1), and can deliver 272.4 mA h g(-1) at 10 A g(-1) (67.37% retention from 1 to 10 A g(-1)). It also achieves long-term cycle stability (100.1% after 1000 cycles) at 10 A g(-1). The rechargeable aqueous ZIBs with ultra-long life and ultra-high rate may be the most advantageous candidate for the next generation of energy storage facilities. (C) 2020 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available