Numerical characterization for electrical conductivity of two-dimensional nanocomposite systems with conducting fiber fillers

Jungmin Lee, Yesol Yun, Sang Hyun Lee, Jinyoung Hwang

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Hybrid nanotube composite systems with two different types of fillers attract considerable attention in several applications. The incorporation of secondary fillers exhibits conflicting behaviors of the electrical conductivity, which either increases or decreases according to the dimension of secondary fillers. This paper addresses quantitative models to predict the electrical performance in the configuration of two dimensional systems with one-dimensional secondary fillers. To characterize these properties, Monte Carlo simulations are conducted for percolating networks with a realistic model with the consideration of the resistance of conducting NWs, which conventional computational approaches mostly lack from the common assumption of zero-resistance or perfect conducting NWs. The simulation results with nonperfect conductor NWs are compared with the previous results of perfect conductors. The variation of the electrical conductivity reduces with the consideration of the resistance as compared to the cases with perfect conducting fillers, where the overall electrical conductivity solely originates from the contact resistance caused by tunneling effects between NWs. In addition, it is observed that the resistance associated with the case of invariant conductivity with respect to the dimension of the secondary fillers increases, resulting in the need for secondary fillers with the increased scale to achieve the same electrical performance. The results offer useful design guidelines for the use of a two-dimensional percolation network for flexible conducting electrodes.

Original languageEnglish
Article number2410
JournalMaterials
Volume13
Issue number10
DOIs
Publication statusPublished - 2020 May 1

Bibliographical note

Funding Information:
Funding: This work was supported in part by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2017R1C1B5076588, 2019R1A2C1084855) and in part by a Korea University Grant.

Publisher Copyright:
© 2020 by the authors.

Keywords

  • Electrical conductivity
  • Monte Carlo simulation
  • Nano-composites
  • Percolation networks

ASJC Scopus subject areas

  • General Materials Science

Fingerprint

Dive into the research topics of 'Numerical characterization for electrical conductivity of two-dimensional nanocomposite systems with conducting fiber fillers'. Together they form a unique fingerprint.

Cite this