Cu-Ion Hybrid Porous Carbon with Nanoarchitectonics Derived from Heavy-Metal-Contaminated Biomass as Ultrahigh-Performance Supercapacitor.

ABSTRACT: It is challenging to handle heavy-metal-rich plants that grow in contaminated soil. The role of heavy metals in biomass on the physicochemical structure and electrochemical properties of their derived carbon has not been considered in previous research. In this study, Cu-ion hybrid nanoporous carbon (CHNC) is prepared from Cu content-contaminated biomass through subcritical hydrocharization (HTC) coupling pyrolytic activation processes. The CHNCs are used as advanced electrode material for energy storage applications, exhibiting an impressively ultrahigh capacitance of 562 F g^-1 at a current density of 1 A g^-1 (CHNC-700-4-25), excellent energy density of 26.15 W h kg^-1, and only 7.59% capacitance loss after enduring 10,000 cycles at a current density of 10

SUBMITTER: Wang J 

PROVIDER: S-EPMC11766103 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature