Conductive Cellulose Composites with Low Percolation Threshold for 3D Printed Electronics

Resource type
Date created
2017-06-12
Authors/Contributors
Author: Kim, Taeil
Author: Kim, Woo Soo
Abstract
We are reporting a 3D printable composite paste having strong thixotropic rheology. The composite has been designed and investigated with highly conductive silver nanowires. The optimized electrical percolation threshold from both simulation and experiment is shown from 0.7 vol. % of silver nanowires which is significantly lower than other composites using conductive nano-materials. Reliable conductivity of 1.19 × 102 S/cm has been achieved from the demonstrated 3D printable composite with 1.9 vol. % loading of silver nanowires. Utilizing the high conductivity of the printable composites, 3D printing of designed battery electrode pastes is demonstrated. Rheology study shows superior printability of the electrode pastes aided by the cellulose's strong thixotropic rheology. The designed anode, electrolyte, and cathode pastes are sequentially printed to form a three-layered lithium battery for the demonstration of a charging profile. This study opens opportunities of 3D printable conductive materials to create printed electronics with the next generation additive manufacturing process.
Document
Identifier
DOI: 10.1038/s41598-017-03365-w
Published as
Park, Jae Sung, Taeil Kim, and Woo Soo Kim. "Conductive Cellulose Composites with Low Percolation Threshold for 3D Printed Electronics." Scientific Reports 7 (2017). http://doi.org/10.1038/s41598-017-03365-w
Publication title
Scientific Reports
Document title
Conductive Cellulose Composites with Low Percolation Threshold for 3D Printed Electronics
Date
2017
Volume
7
Publisher DOI
10.1038/s41598-017-03365-w
Copyright statement
Copyright is held by the author(s).
Scholarly level
Peer reviewed?
Yes
Language
Member of collection