Facile synthesis of loaf-like ZnMn2O4 nanorods and their excellent performance in Li-ion batteries
Category
Topical Literature Review
Department
Material Science
Student Status
Graduate
Research Advisor
Dr. Ram Gupta
Document Type
Event
Location
Student Center Ballroom
Start Date
10-4-2025 2:00 PM
End Date
10-4-2025 4:00 PM
Description
Binary transition metal oxides have been attracting extensive attention as promising anode materials for lithium-ion batteries, due to their high theoretical specific capacity, superior rate performance and good cycling stability. Here, loaf-like ZnMn2O4 nanorods with diameters of 80-150 nm and lengths of several micrometers are successfully synthesized by annealing MnOOH nanorods and Zn(OH)2 powders at 700 oC for 2 h. The electrochemical properties of the loaf-like ZnMn204 nanorods as an anode material are investigated in terms of their reversible capacity and cycling performance for lithium-ion batteries. The loaf-like ZnMn2O4 nanorods exhibit a reversible capacity of 517 mAh/g at a current density of 500 mA/g after 100 cycles. The reversible capacity of the nanorods still could be kept at 457 mAh/ g even at 1000 mA/g. The improved electrochemical performance can be ascribed to the one-dimensional shape and the porous structure of the loaf-like ZnMn2O4 nanorods, which offers the electrode convenient electron transport pathways and sufficient void spaces to tolerate the volume change during the Li+ intercalation. These results suggest the promising potential of the loaf-like ZnMn2O4 nanorods in lithium-ion batteries.
Facile synthesis of loaf-like ZnMn2O4 nanorods and their excellent performance in Li-ion batteries
Student Center Ballroom
Binary transition metal oxides have been attracting extensive attention as promising anode materials for lithium-ion batteries, due to their high theoretical specific capacity, superior rate performance and good cycling stability. Here, loaf-like ZnMn2O4 nanorods with diameters of 80-150 nm and lengths of several micrometers are successfully synthesized by annealing MnOOH nanorods and Zn(OH)2 powders at 700 oC for 2 h. The electrochemical properties of the loaf-like ZnMn204 nanorods as an anode material are investigated in terms of their reversible capacity and cycling performance for lithium-ion batteries. The loaf-like ZnMn2O4 nanorods exhibit a reversible capacity of 517 mAh/g at a current density of 500 mA/g after 100 cycles. The reversible capacity of the nanorods still could be kept at 457 mAh/ g even at 1000 mA/g. The improved electrochemical performance can be ascribed to the one-dimensional shape and the porous structure of the loaf-like ZnMn2O4 nanorods, which offers the electrode convenient electron transport pathways and sufficient void spaces to tolerate the volume change during the Li+ intercalation. These results suggest the promising potential of the loaf-like ZnMn2O4 nanorods in lithium-ion batteries.
