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★ 小木蟲: 金幣+0.5, 給個紅包,謝謝回帖
Graphene oxide (GO) was synthesized
by the modification of Hummers’s method and described
elsewhere.28,35 Graphene oxide (100 mg) was placed in a Petri
dish set in a vacuum desiccator, where a piece of filter paper
saturated with the chemical reducing agent hydrazine (80 wt %
water solution, 5 mL) was placed in the desiccator for the
reduction. The reducing reaction time of 72 h gave the best
results for the capacitor performance as discussed below and
this sample was assigned as GM-A. Two other graphene samples
have also been prepared: sample GM-B, reduced in 24 h by
hydrazine, and sample GM-C, obtained from GM-B after being
further annealed at 400 °C for 3 h in argon |
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