Journal
MATERIALS LETTERS
Volume 348, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2023.134682
Keywords
Supercapacitor; Ternary metal oxides; Energy density; Hollow structure
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A novel P-doped ternary metal oxide (P-Ni0.5Cu0.5Co2O4) with a yolk-shell hollow structure is prepared and used as electrode material for supercapacitors, showing significantly improved conductivity and capacity. The assembled P-Ni0.5Cu0.5Co2O4//activated carbon supercapacitor exhibits an ultra-high energy density of 118.6 W h kg-1 and stable cyclic performance.
P-doped multi-metal oxide is an effective method to improve its electrochemical energy storage performance. Herein, a novel P-doped ternary metal oxide (P-Ni0.5Cu0.5Co2O4) with a yolk-shell hollow structure is reasonably prepared and used as electrode material for supercapacitors. The as-prepared electrode has significantly improved conductivity and capacity, with a high specific capacitance of 1570.2F g-1 in a three-electrode system. Furthermore, the as-assembled P-Ni0.5Cu0.5Co2O4//activated carbon supercapacitor possesses an ultra-high energy density of 118.6 W h kg-1 and stable cyclic performance.
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