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A method is developed for growing three-dimensional hierarchic structures of porous graphenic carbon film/hollow carbon nanorods where porous graphenic carbon film is first synthesized followed by, growth of carbon nanorods. By annealing an amorphous carbon layer deposited underneath a nickel thin film at elevated temperatures, the porous graphenic carbon film forms on top via carbon diffusion and...
Porous carbons (PCs) for super capacitors were prepared from coal tar pitch by a one-step microwave-assisted KOH activation with low KOH consumption. The surface area of the PC (PC2−M) made at a KOH/pitch mass ratio of 2 with microwave heating for 30min reaches 1786m2/g. The electrochemical performance of the PC electrode for super capacitors was evaluated in different electrolytes including KOH,...
Cu–m-phenylenediamine (Cu–mPD) complex was firstly exploited to efficiently synthesize poly(m-phenylenediamine)/reduced graphene oxide (PmPD/rGO) hydrogel. Cu–mPD complex shows high gelation and redox reaction activity with GO, which is ascribed to the joint and mediation effect of Cu2+. The green and efficient route realized high monomer polymerization (>99%) and decreased hydrothermal reaction...
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