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3D printing of high-performance micro-supercapacitors with patterned exfoliated graphene/carbon nanotube/silver nanowire electrodes.
- Source :
- SCIENCE CHINA Technological Sciences; May2021, Vol. 64 Issue 5, p1065-1073, 9p
- Publication Year :
- 2021
-
Abstract
- Micro-supercapacitors (MSCs) show great potential as on-chip energy storage devices for portable electronics. The major flaw of thin-film MSCs is their low energy density. To improve the energy density, thicker electrodes are required. However, the fabrication of MSCs with thick electrodes remains a challenge. In this work, a novel 3D printing method is employed to fabricate high-performance MSCs with interdigitated exfoliated graphene (EG)/carbon nanotube (CNT)/silver nanowire (AgNW) electrodes. The nanowelding of AgNW junction plays a critical role in the realization of 3D printing. To enhance the electrochemical performances of EG, phosphorus atoms are incorporated into the carbon framework with 1.7 at%. The areal capacitance of the 3D printed MSC is 21.6 mF cm<superscript>−2</superscript> at a scan rate of 0.01 Vs<superscript>−1</superscript>. The areal energy density of the MSC ranges from 0.5 to 2 µWh cm<superscript>−2</superscript> with a maximum power density of 2.5 mW cm<superscript>−2</superscript>. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 16747321
- Volume :
- 64
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- SCIENCE CHINA Technological Sciences
- Publication Type :
- Academic Journal
- Accession number :
- 150167706
- Full Text :
- https://doi.org/10.1007/s11431-020-1763-5