9 research outputs found
Supercapacitors Based on Graphene-Supported Iron Nanosheets as Negative Electrode Materials
We report a facile strategy to prepare iron nanosheets directly grown on graphene sheets nanocomposite (C-PGF) through the carbonization of iron ions adsorbed onto polyaniline nanosheet/graphene oxide hybrid material. Because of the synergistic effect of iron nanosheets and graphene sheets, the as-obtained C-PGF exhibits an ultrahigh capacitance of <i>ca.</i> 720 F g<sup>–1</sup> in 6 M KOH aqueous solution. Additionally, the assembled asymmetric supercapacitor (C-PGF//Ni(OH)<sub>2</sub>/CNTs) delivers a remarkable high power density and a noticeable ultrahigh energy density of <i>ca.</i> 140 Wh kg<sup>–1</sup> (based on the total mass of active materials) and an acceptable cycling performance of 78% retention after 2000 cycles. Therefore, the designed supercapacitors with high energy density, comparable to rechargeable lithium-ion batteries (LIBs), offer an important guideline for future design of advanced next-generation supercapacitors for both industrial and consumer applications
The Influence of “Made in China” on the Great Moderation of the Global Economy:An Empirical Test Based on Value Chains
Facile synthesis of functionalized porous carbon with three-dimensional interconnected pore structure for high volumetric performance supercapacitors
The model and empirical estimation of the optimal flexibility of RMB exchange-rate regime: A study based on the price-stabilization
exchange rate regime flexibility, price stabilization, exchange-rate stabilization, exchange market pressure, F41, F33,