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

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.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Park JS,Kim T,Kim WS

doi

10.1038/s41598-017-03365-w

subject

Has Abstract

pub_date

2017-06-12 00:00:00

pages

3246

issue

1

issn

2045-2322

pii

10.1038/s41598-017-03365-w

journal_volume

7

pub_type

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