Effect of Sample Geometry on Graphitization of Polyacrylonitrile-Reference-Cited by-同舟云学术

Effect of Sample Geometry on Graphitization of Polyacrylonitrile

Published:2024-05-07 Issue: Volume: Page:
ISSN:1613-6810
Container-title:Small
language:en
Short-container-title:Small

Author:

Hwang Young Woo¹²,Shin Tae Joo³,Seo Jae Hong¹⁴,Kim Min Hyeok¹⁴,Lee Won Jun²,Ruoff Rodney S.¹⁴⁵⁶,Seong Won Kyung¹,Lee Sun Hwa¹^ORCID

Affiliation:

1. Center for Multidimensional Carbon Materials Institute for Basic Science (IBS) Ulsan 44919 Republic of Korea

2. Department of Fiber System Engineering Dankook University Yongin 16890 Republic of Korea

3. Graduate School of Semiconductor Materials and Devices Engineering Ulsan National Institute of Science and Technology (UNIST) Ulsan 44919 Republic of Korea

4. Department of Chemistry Ulsan National Institute of Science and Technology (UNIST) Ulsan 44919 Republic of Korea

5. School of Energy and Chemical Engineering Ulsan National Institute of Science and Technology (UNIST) Ulsan 44919 Republic of Korea

6. Department of Materials Science and Engineering Ulsan National Institute of Science and Technology (UNIST) Ulsan 44919 Republic of Korea

Abstract

AbstractIn this study, it is analyzed how sample geometry (spheres, nanofibers, or films) influences the graphitization behavior of polyacrylonitrile (PAN) molecules. The chemical bonding and changes in the composition of these three geometries are studied at the oxidation, carbonization, and graphitization stages via scanning electron microscopy (SEM), in situ thermogravimetric‐infrared (TGA‐IR) analysis, elemental analysis, Raman spectroscopy, and X‐ray photoelectron spectroscopy (XPS). The influence of molecular alignment on the graphitization of the three sample geometries is investigated using synchrotron wide‐angle X‐ray diffraction (WAXD) and transmission electron microscopy (TEM). The effects of molecular alignment at different draw rates during spinning are explored in detail.

Funder

Institute for Basic Science

Publisher

Wiley

Link

https://onlinelibrary.wiley.com/doi/pdf/10.1002/smll.202400301

Reference48 articles.

1. A review on the mechanical and electrical properties of graphite and modified graphite reinforced polymer composites

2. H. O.Pierson Handbook of Carbon Graphite Diamonds and Fullerenes William Andrew 2012.

3. Expanded graphite as superior anode for sodium-ion batteries

4. Intercalation chemistry of graphite: alkali metal ions and beyond