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- W4377143140 abstract "The rational design of defective sites and atomic structure of electrode materials for energy storage devices still remains a challenge. Herein, hierarchically activated carbon foam (ACF) from bread has been developed. The density functional theory (DFT) calculation reveals that oxygen defects can form in the reduced graphene oxide/carbon particle (rGO/CP) derived from graphene oxide frameworks (GOFs) by adding the reducing agent. The synergistic effects of the internal porous architecture of ACF and external interface coupling formed by the defect-rich rGO/CP nanocomposites can provide more electrons to adsorb -OH anions resulting in superior electrochemical energy storage performance. Therefore, the ACF-rGO/large-scale carbon particle (ACF-rGO/LCP) electrodes show ultrahigh specific capacitance (521 F g−1) at a current density of 0.5 A g−1 and outstanding cycling stability with capacitance retention of 96.4 % over 12,000 cycles. Furthermore, the assembled binder-free supercapacitor using KOH/polyvinyl alcohol (PVA) as a gel electrolyte, displays a high energy density of 27.5 W h kg−1 with a power density of 472 W kg−1, and a capacitance retention of 95.2 % after 12,000 cycles. This work provides a novel pathway to prepare high-performance supercapacitors via the treatment of food waste and the recycling of carbohydrate resources." @default.
- W4377143140 created "2023-05-21" @default.
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- W4377143140 date "2023-09-01" @default.
- W4377143140 modified "2023-09-28" @default.
- W4377143140 title "Hierarchically bread-derived carbon foam decorated with defect engineering in reduced graphene oxide/carbon particle nanocomposites as electrode materials for solid-state supercapacitors" @default.
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- W4377143140 doi "https://doi.org/10.1016/j.est.2023.107616" @default.
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