Direct Laser-Patterned Micro-Supercapacitors from Paintable MoS2 Films

作者：Cao, Liujun; Yang, Shubin^*; Gao, Wei; Liu, Zheng; Gong, Yongji; Ma, Lulu; Shi, Gang; Lei, Sidong; Zhang, Yunhuai; Zhang, Shengtao; Vajtai, Robert; Ajayan, Pulickel M.

来源：Small, 2013, 9(17): 2905-2910.

DOI：10.1002/smll.201203164

• micro-supercapacitors
• paintable films
• MoS2
• nanosheets
• laser patterning

Micrometer-sized electrochemical capacitors have recently attracted attention due to their possible applications in micro-electronic devices. Here, a new approach to large-scale fabrication of high-capacitance, two-dimensional MoS2 film-based micro-supercapacitors is demonstrated via simple and low-cost spray painting of MoS2 nanosheets on Si/SiO2 chip and subsequent laser patterning. The obtained micro-supercapacitors are well defined by ten interdigitated electrodes (five electrodes per polarity) with 4.5 mm length, 820 m wide for each electrode, 200 m spacing between two electrodes and the thickness of electrode is approximate to 0.45 m. The optimum MoS2-based micro-supercapacitor exhibits excellent electrochemical performance for energy storage with aqueous electrolytes, with a high area capacitance of 8 mF cm(-2) (volumetric capacitance of 178 F cm(-3)) and excellent cyclic performance, superior to reported graphene-based micro-supercapacitors. This strategy could provide a good opportunity to develop various micro-/nanosized energy storage devices to satisfy the requirements of portable, flexible, and transparent micro-electronic devices.

• 出版日期2013-9-9
• 单位重庆大学