Citation: Shi Lu, Wang Yang, Zou Peichao, Wang Xuanyu, Wu Dang, Wang Ronghe, Yang Cheng. Laser processed micro-supercapacitors based on carbon nanotubes/manganese dioxide nanosheets composite with excellent electrochemical performance and aesthetic property[J]. Chinese Chemical Letters, ;2018, 29(4): 592-595. doi: 10.1016/j.cclet.2018.01.024 shu

Laser processed micro-supercapacitors based on carbon nanotubes/manganese dioxide nanosheets composite with excellent electrochemical performance and aesthetic property

Division of Energy and Environment, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China

Corresponding author: Yang Cheng, yang.cheng@sz.tsinghua.edu.cn
Received Date: 8 November 2017
Revised Date: 10 January 2018
Accepted Date: 12 January 2018
Available Online: 1 May 2018

Figures(4)

Micro-supercapacitors with excellent electrochemical performance and aesthetic property are realized using the carbon nanotubes/manganese dioxide nanosheets (CNTs/δ-MnO₂) composite as electrodes. This CNTs/δ-MnO₂ nanocomposite is excellently compatible with the slurry dispensing process for electrode fabrication, and thus is conducive for preparing thick electrode films, which exhibits a specific capacitance of 257 F/g with an electrode thickness of 13 μm. By involving laser-scribing technique, the electrode film can be patterned with a high resolution and fabricated into a planar micro-supercapacitor, showing the maximum energy density of 6.83 mWh/cm³ at the power density of 154.3 mW/cm³, and maintained a value of 2.71 mWh/cm³ at the maximum power density of 2557.5 mW/cm³. Considering the versatility of the laser-scribing technical platform, the micro-supercapacitors fabricated in this way exhibit excellent aesthetic property and can cater to various miniaturized wearable electronic applications. This technology opens up opportunities for facile and scalable fabrication of high performance energy devices with shape diversity and a meaning of art.
- Micro-supercapacitors,
- MnO₂,
- Slurry dispensing,
- Laser,
- Aesthetic property
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