Synthesis and applications of flower-like polyacrylonitrile (PAN) and PAN-derived carbon superstructures
Abstract/Contents
- Abstract
- Polyacrylonitrile (PAN) and PAN-derived carbon materials have diverse applications in areas such as adsorption, separation, energy storage, and biomedical applications. However, synthesizing nanostructured PAN is challenging, often requiring complex, multi-step processes like sacrificial templating. Recently, researchers have reported a simple, one-pot free radical polymerization method for synthesizing flower-like PAN superstructures. This method has drawn increasing interest in recent years due to the unique morphology of the resulting structures. The flower-like shape of the PAN superstructures offers many benefits, including open-pore structures that are well suited for applications such as sensors, separation, catalysis, and energy storage. Additionally, the simple synthesis procedure allows for scalability in industrial production, making it easier to produce large quantities of nanostructured PAN. However, the formation process for the complex flower-like structures in the one-step polymerization reaction remains unclear, and the advantages of the flower-like morphology are still under-explored. This thesis aims to contribute to our understanding of the flower-like PAN superstructures and their potential uses in various fields. The thesis consists of four main parts. The first part provides a comprehensive review summarizing recent progress in developing similar flower-like superstructures, including their synthesis, formation mechanism, and existing applications. The second part focuses on investigating the formation mechanism of flower-like PAN particles using various in situ and ex situ characterization techniques, such as in-situ ultra-small-angle x-ray scattering (USAXS). The third part of the thesis focuses on fine-tuning and developing more advanced PAN and PAN-derived carbon superstructures. This includes tuning and designing sub-particle level, particle level, and device-level superstructures. The fourth part of the thesis focuses on demonstrating the potential of flower-like PAN and PAN-derived carbon particles (carbon flower) in various applications, including lithium metal anodes, sulfur cathodes, supercapacitors, and flexible pressure sensors. This thesis provides a fundamental understanding of the formation mechanism of flower-like PAN superstructures and demonstrates their advantages in a range of applications.
Description
| Type of resource | text |
|---|---|
| Form | electronic resource; remote; computer; online resource |
| Extent | 1 online resource. |
| Place | California |
| Place | [Stanford, California] |
| Publisher | [Stanford University] |
| Copyright date | 2023; ©2023 |
| Publication date | 2023; 2023 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | Gong, Huaxin |
|---|---|
| Degree supervisor | Bao, Zhenan |
| Thesis advisor | Bao, Zhenan |
| Thesis advisor | Cargnello, Matteo |
| Thesis advisor | Cui, Yi, 1976- |
| Degree committee member | Cargnello, Matteo |
| Degree committee member | Cui, Yi, 1976- |
| Associated with | Stanford University, School of Engineering |
| Associated with | Stanford University, Department of Chemical Engineering |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | Huaxin Gong. |
|---|---|
| Note | Submitted to the Department of Chemical Engineering. |
| Thesis | Thesis Ph.D. Stanford University 2023. |
| Location | https://purl.stanford.edu/fj672hj7072 |
Access conditions
- Copyright
- © 2023 by Huaxin Gong
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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