Abstract
In this work, NiCo2O4 nanowalls composed of ultrathin nanosheets are fabricated successfully on Ni foam by a facile one-pot solvothermal method followed by thermolysis of the precursors. The as-prepared NiCo2O4 products are evaluated as electrode materials for supercapacitors and lithium ion batteries. The results show high discharge capacitance of 925mF/cm2 at a current density of 5mA/cm2, with remarkable cycling stability (about 24.2% loss after 6000 cycles) and excellent rate performance (71.5% capacitance retention with current density range from 1mA/cm2 to 20mA/cm2). In addition, Ni foam supported NiCo2O4 nanowalls possess excellent discharge capacity of 1100mAh/g as lithium ion battery anode at a current density of 100mA/g. The excellent electrochemical performance of NiCo2O4 nanowalls could be ascribed to the unique spatial structure composed of interconnected ultrathin nanosheets, which facilitates ion penetration and electron transportation, demonstrating their potential applications as electrode materials for high performance supercapacitors and lithium ion batteries.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call