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A carbon nanotube (CNT) film was used as the current collector and LiCoO2 as the cathode for a lithium ion battery. The battery showed a high initial discharge capacity of 132.8mAhg−1, a high retention rate of over 80% after 500 cycles under 1C and a low self-discharge rate of 1.5%. When the areal density of the CNT film is 16mgcm−2, the energy density of the LiCoO2–CNT battery is 25% larger than...
Phosphate functionalized carbon nanodots (C-dots) with satisfactory quantum yield have been prepared through one-step acidic oxidation of sucrose by H3PO4 at low temperature (60°C). The as-prepared C-dots are monodisperse with narrow size distribution. Besides, two C-dots emitting different colors, namely green and yellow, can be easily separated by collecting the supernatant and precipitate after...
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