Subjects: Materials Science >> Materials Science (General) submitted time 2022-10-26 Cooperative journals: 《桂林电子科技大学学报》
Abstract： In order to study the electrochemical performance of ternary transition metal oxide as a sodium electrode, hollow
Ni0.75Zn0.25Fe2O4 nanospheres with a diameter of approximately 230 nm were prepared through hydrothermal method. The
prepared hollow Ni0.75Zn0.25Fe2O4 nanospheres have a high specific surface area of 32.6 m2/g and good dispersibility. Hollow
Ni0.75Zn0.25Fe2O4 nanospheres show good cycle life and rate performance when used as the negative electrode of sodium
ion batteries: After 800 cycles at a current density of 200 mA/g, there is still a discharge specific capacity of 178.5 mA·h/g, and
the capacity retention rate is as high as 91.6%; After 800 cycles at a current density of 500 mA/g, the capacity retention
rate is 89.3%. In addition, when the current density is 100, 200, 500, 1 000 and 2 000 mA/g, the average discharge specific
capacity is 212.7, 191.4, 148, 121.8 and 100 mA·h/g, respectively. The good electrochemical performance of the hollow
Ni0.75Zn0.25Fe2O4 nanosphere electrode can be due to its unique hollow structure of the nanosphere, high specific surface
area and shortened electron and ion transmission path, which improve its electrochemical performance during the Na+ insertion/
desorption process.
Hits
Hits
Downloads
Comment