Cellulose aerogel-based copper oxide/carbon composite for supercapacitor electrode.

ABSTRACT: Carbon composite is one of the most competitive electrode materials for supercapacitor, and improving its energy density remains a significant challenge. The copper oxide/carbon composites with high specific surface area were prepared from the cellulose aerogel loaded with copper salts. The copper oxide/carbon composite electrode material, deriving from copper sulfate, reached a specific capacitance of 1001 F g^-1 at 2 A g^-1, with an energy density of 139.0 W h kg^-1. After 500 cycles, the capacitance retention rate is 98.06%. An asymmetric supercapacitor was assembled using this material as positive electrode material, activated carbon as negative electrode material, and 3.0 M KOH as electrolyte. It exhibited good reversible capacity and low voltage drop los

SUBMITTER: Qian Y 

PROVIDER: S-EPMC11873543 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature