Optimization of micro-patterning using light scribing process and its application to micro-supercapacitors
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초록
내용
The rapid development of smart technologies is accelerating the growing demand for miniaturized energy storage devices based on micro-patterning. Herein, we report the facile fabrication method of interdigitated graphene micro-supercapacitors (MSCs) based on an improved light scribing (LSC) process. The novelty of this study is that the reduction effect by heat treatment and the reduction effect by L-AA were applied to the LSC process. Graphene micro-patterns with an improved degree of reduction could be easily obtained through this synergistic effect. Owing to the synergistic effects of the L-AA and the LSC process, the MSC device obtained from our method demonstrated a high specific capacitance of 14.1 F/cm3, energy density of 1.78 mWh/cm3, and power density of 69.9 mW/cm3. In addition, our work exhibited excellent cycling stability, in which 88.2% of the initial specific capacitance was maintained even after 10,000 galvanostatic charge-discharge (GCD) cycles.