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Design of 3D-Printable Conductive Composites for 3D-Printed Battery

Resource type
Thesis type
(Thesis) M.A.Sc.
Date created
2016-08-09
Authors/Contributors
Abstract
In this research, a biocompatible nano-composite is designed for the application of 3D printed battery. The nano-composite paste is composed of an electrically conductive silver nanowire (AgNW) filler within a thixotropic carboxymethyl cellulose (CMC) matrix. Experimental demonstration and computational simulations on nano-composites with various filler fractions are performed to find the electrical percolation threshold of the nano-composite. The percolation threshold as 0.7 vol. % of AgNWs is predicted by computer simulations as well as by experiments. Also, maximum electronic conductivity is obtained as 1.19×102 S/cm from a nano-composite with 1.9 vol. % of AgNWs. Also, newly designed paste 3D printing apparatus is built by integrating a commercially available delta 3D printer with a paste extruder.Finally, the 3D printable battery facilitated by the conductive composite is demonstrated. Cathode and anode materials are formulated by addition of cathode and anode active materials to the nano-composite of AgNW and CMC. Rheology study of the cathode and anode paste is carried out and thixotropic (shear-thinning) behavior is observed which is an essential characteristic of the 3D printable paste [1], [2]. Lastly, the performance demonstration on the fabricated 3D printed battery is carried out. The 3D printable conductive paste is expected to contribute in additive manufacturing process for printable electronics.
Document
Identifier
etd9697
Copyright statement
Copyright is held by the author.
Permissions
This thesis may be printed or downloaded for non-commercial research and scholarly purposes.
Scholarly level
Supervisor or Senior Supervisor
Thesis advisor: Kim, Woo Soo
Download file Size
etd9697_JPark.pdf 3.45 MB

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