Piezoelectric Inkjet Printing of Nanoporous Carbons for Micro-supercapacitor Devices
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
High-resolution interdigital micro-supercapacitor (MSC) devices are produced by one-step printing of liquid carbon precursors based on renewable resources. A piezo-driven micro-pipetting system allows precise positioning of the ink, offering a high degree of variability in terms of geometric supercapacitor designs. The printed precursor structures were directly converted into nanoporous carbon materials by pyrolysis at 900 °C. A hydrogel electrolyte based on PVA/H2SO4 was used to form quasi-solid-state MSCs. Stable structures with an ohmic serial resistance of around 540 ω and capacitance up to 151 F cm-3 (3.9 mF cm-2) could be produced via additional nitrogen doping of the nanoporous carbon. The capacitance retention of piezoelectric-printed structures after 10,000 cycles remains as high as 96%.
Details
Original language | English |
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Pages (from-to) | 1560-1567 |
Number of pages | 8 |
Journal | ACS applied energy materials |
Volume | 4 |
Issue number | 2 |
Publication status | Published - 22 Feb 2021 |
Peer-reviewed | Yes |
Keywords
Sustainable Development Goals
ASJC Scopus subject areas
Keywords
- 3D piezoelectric printer, cyclic voltammetry, inkjet printing, micro-supercapacitor, porous carbon