lishan peng | University of Shanghai for Science and Technology (original) (raw)
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D. Y. PATIL EDUCATION SOCIETY (DEEMED UNIVERSITY), KOLHAPUR
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We report a single-crystalline Co 3 O 4 nanowire array grown on a nickel foam prepared by a hydro... more We report a single-crystalline Co 3 O 4 nanowire array grown on a nickel foam prepared by a hydrothermal synthesis method for supercapacitor application. The Co 3 O 4 nanowires show sharp tips and have an average diameter of 70 nm, and a length up to 25 mm. Impressively, the as-prepared single-crystalline Co 3 O 4 nanowire array exhibits noticeable pseudocapacitive performance with a high capacitance of 754 F g 21 at 2 A g 21 and 610 F g 21 at 40 A g 21 as well as excellent cycling stability. The enhanced supercapacitor performance is due to the unique one-dimensional (1D) architecture, which provides fast diffusion paths for ions and facilitates the electron and ion transfer on the Co 3 O 4 / electrolyte interfaces. Moreover, the 1D nanowire array can accommodate the volume expansion and restrain the pulverization and deterioration of Co 3 O 4 during the repeated cycling process, resulting in enhanced cycling stability.
We report a single-crystalline Co 3 O 4 nanowire array grown on a nickel foam prepared by a hydro... more We report a single-crystalline Co 3 O 4 nanowire array grown on a nickel foam prepared by a hydrothermal synthesis method for supercapacitor application. The Co 3 O 4 nanowires show sharp tips and have an average diameter of 70 nm, and a length up to 25 mm. Impressively, the as-prepared single-crystalline Co 3 O 4 nanowire array exhibits noticeable pseudocapacitive performance with a high capacitance of 754 F g 21 at 2 A g 21 and 610 F g 21 at 40 A g 21 as well as excellent cycling stability. The enhanced supercapacitor performance is due to the unique one-dimensional (1D) architecture, which provides fast diffusion paths for ions and facilitates the electron and ion transfer on the Co 3 O 4 / electrolyte interfaces. Moreover, the 1D nanowire array can accommodate the volume expansion and restrain the pulverization and deterioration of Co 3 O 4 during the repeated cycling process, resulting in enhanced cycling stability.