The Iron Vanadate Composite as a High-Capacity Cathode for Aqueous Zinc-lon Batteries.
Category
Sciences and Technology
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
Aqueous zinc ion batteries are considered an alternative technology for lithium-ion batteries owing to their high safety and low cost. However, finding suitable cathode material (matching with zinc anode) remains a great challenge. Herein, we prepared an iron vanadate-based composite using the solvothermal method associated with further calcination at 500 °C. The as-prepared composite sample is used as a high-capacity cathode for aqueous ZIBs. The measured XRD results confirmed the formation of the FeV2O4/V205 composite phase. The oxidation and reduction peaks in the measured CV results confirmed that Zn+2 entered host cathode in multiple stages. The FeV2O4/V205 composite cathode delivered a high initial charge and discharge capacity of 312 mAh/g and 413 mAh/g at a current density of 500 mAh/g with an initial Coulombic efficiency of 75%, After 150 cycles, the FeV2O4/V205 composite cathode showed an excellent discharge capacity of 170 mA h/g. This work provides a new strategy for the preparation of vanadate-based composites for energy storage applications.
The Iron Vanadate Composite as a High-Capacity Cathode for Aqueous Zinc-lon Batteries.
Student Center Ballroom
Aqueous zinc ion batteries are considered an alternative technology for lithium-ion batteries owing to their high safety and low cost. However, finding suitable cathode material (matching with zinc anode) remains a great challenge. Herein, we prepared an iron vanadate-based composite using the solvothermal method associated with further calcination at 500 °C. The as-prepared composite sample is used as a high-capacity cathode for aqueous ZIBs. The measured XRD results confirmed the formation of the FeV2O4/V205 composite phase. The oxidation and reduction peaks in the measured CV results confirmed that Zn+2 entered host cathode in multiple stages. The FeV2O4/V205 composite cathode delivered a high initial charge and discharge capacity of 312 mAh/g and 413 mAh/g at a current density of 500 mAh/g with an initial Coulombic efficiency of 75%, After 150 cycles, the FeV2O4/V205 composite cathode showed an excellent discharge capacity of 170 mA h/g. This work provides a new strategy for the preparation of vanadate-based composites for energy storage applications.
