Journal
JOURNAL OF POWER SOURCES
Volume 422, Issue -, Pages 145-155Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2019.03.030
Keywords
Zinc oxide; Zn-Al layered double hydroxide nanosheets; Cycling performance; Anode material; Zinc-based rechargeable batteries
Funding
- Natural Science Foundation of China [51674105, 51604098]
- Program for Science & Technology Innovation Talents in Universities of Henan Province [17HASTIT030]
- Program for Excellent Youth Foundation of Henan Province [184100510005]
- Program for Innovative Research Team in University of Henan Province [18IRTSTHN003]
Ask authors/readers for more resources
High-performance Zn-Al layered double hydroxide nanosheets-coated spherical ZnO@C composite is successfully fabricated for use as advanced anode materials of zinc-based rechargeable batteries. It is interestingly found that the spherical ZnO@C-ZnAl layered double hydroxide (15%) composite with a proper coated content of ZnAl layered double hydroxide shows a superior cycling performance, satisfactory volume specific capacity and enhanced high-rate properties. After 400 cycles at 1C/1C and 200 cycles at 1C/5C, the ZnO@C-ZnAl layered double hydroxide (15%) exhibits enhanced capacity retention of 81.6%. In contrast, the pristine ZnO shows low capacity retention of only 46.3% after 200 cycles at 1C/1C. These performance improvements can be mainly attributable to the synergistic effect of the surface coating with Zn-Al layered double hydroxide and in-situ doping with carbon. The coated Zn-Al layered double hydroxide nanosheets can modify the dissolution-deposition process of ZnO anode and the doped C can enhance its electronic conductivity, eventually leading to the reduced electrochemical resistance, improved reaction reversibility, and enhanced structural stability. As a result, it is believed that the spherical ZnO@C-ZnAl layered double hydroxide (15%) composite is a promising advanced anode material for zinc-based rechargeable batteries.
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