PVDF(polyvinylidene fluoride)와 SiO2의 열처리를 이용한 요크-쉘(yolk-shell) 구조의 SiO2/C 입자 합성

Junghyun Kim; Jeonghan Lee; Jin Su Jung; Gyo Woo Lee

doi:10.3795/KSME-B.2023.47.8.415

PVDF(polyvinylidene fluoride)와 SiO2의 열처리를 이용한 요크-쉘(yolk-shell) 구조의 SiO2/C 입자 합성

Translated title of the contribution: Synthesis of Yolk-Shell-Structured SiO₂/C Particles Using a Heat-Treated Mixture of Polyvinylidene Fluoride and SiO₂ Particles

Junghyun Kim
, Jeonghan Lee
, Jin Su Jung
, Gyo Woo Lee^*

^*Corresponding author for this work

Mechanical Design Engineering

Jeonbuk National University
Ltd

Research output: Contribution to journal › Journal article › peer-review

1 Scopus citations

Abstract

This study devised a method for manufacturing yolk-shell-structured SiO₂/C composite particles by a simple heat treatment process using a mixture of polyvinylidene fluoride (PVDF) and SiO₂. This simple technique for fabricating yolk-shell structures involves the simultaneous carbonization of a carbon source and etching of SiO₂ during the heat treatment. During the fabrication process, PVDF and SiO₂ particles were mixed and heat treated, and the changes in the mixture before and after the heat treatment were examined by mass measurement, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS) analysis. The mass of the mixture, which decreased after heat treatment, decreased even further at 400°C because of the active thermal decomposition of PVDF in particular. These results, which were confirmed through TEM, were attributed to the loss of decomposed gases and SiO₂ etching by HF gas. As a result, the yolk-shell-structured SiO₂/C composite particles are formed a carbonized carbon layer through the heat treatment of PVDF while empty spaces are formed by etching the core SiO₂ with HF generated by the thermal decomposition of PVDF. Thus, carbonization and SiO₂ etching were simultaneously performed in a single heat treatment process to fabricate the yolk-shell-structured particles.

Translated title of the contribution	Synthesis of Yolk-Shell-Structured SiO₂/C Particles Using a Heat-Treated Mixture of Polyvinylidene Fluoride and SiO₂ Particles
Original language	Korean
Pages (from-to)	415-422
Number of pages	8
Journal	Transactions of the Korean Society of Mechanical Engineers, B
Volume	47
Issue number	8
DOIs	https://doi.org/10.3795/KSME-B.2023.47.8.415
State	Published - 2023.08

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 9 Industry, Innovation, and Infrastructure

Keywords

Carbon Coating
Etching
Heat Treatment
Polyvinylidene Fluoride
SiO

Quacquarelli Symonds(QS) Subject Topics

Engineering - Mechanical

Access to Document

10.3795/KSME-B.2023.47.8.415

Cite this

@article{765cd59a8411434b8c965ad04cf69fe6,

title = "PVDF(polyvinylidene fluoride)와 SiO2의 열처리를 이용한 요크-쉘(yolk-shell) 구조의 SiO2/C 입자 합성",

abstract = "This study devised a method for manufacturing yolk-shell-structured SiO2/C composite particles by a simple heat treatment process using a mixture of polyvinylidene fluoride (PVDF) and SiO2. This simple technique for fabricating yolk-shell structures involves the simultaneous carbonization of a carbon source and etching of SiO2 during the heat treatment. During the fabrication process, PVDF and SiO2 particles were mixed and heat treated, and the changes in the mixture before and after the heat treatment were examined by mass measurement, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS) analysis. The mass of the mixture, which decreased after heat treatment, decreased even further at 400°C because of the active thermal decomposition of PVDF in particular. These results, which were confirmed through TEM, were attributed to the loss of decomposed gases and SiO2 etching by HF gas. As a result, the yolk-shell-structured SiO2/C composite particles are formed a carbonized carbon layer through the heat treatment of PVDF while empty spaces are formed by etching the core SiO2 with HF generated by the thermal decomposition of PVDF. Thus, carbonization and SiO2 etching were simultaneously performed in a single heat treatment process to fabricate the yolk-shell-structured particles.",

keywords = "Carbon Coating, Etching, Heat Treatment, Polyvinylidene Fluoride, SiO",

author = "Junghyun Kim and Jeonghan Lee and Jung, \{Jin Su\} and Lee, \{Gyo Woo\}",

note = "Publisher Copyright: {\textcopyright} 2023 The Korean Society of Mechanical Engineers.",

year = "2023",

month = aug,

doi = "10.3795/KSME-B.2023.47.8.415",

language = "Korean",

volume = "47",

pages = "415--422",

journal = "Transactions of the Korean Society of Mechanical Engineers, B",

issn = "1226-4881",

number = "8",

}

TY - JOUR

T1 - PVDF(polyvinylidene fluoride)와 SiO2의 열처리를 이용한 요크-쉘(yolk-shell) 구조의 SiO2/C 입자 합성

AU - Kim, Junghyun

AU - Lee, Jeonghan

AU - Jung, Jin Su

AU - Lee, Gyo Woo

PY - 2023/8

Y1 - 2023/8

N2 - This study devised a method for manufacturing yolk-shell-structured SiO2/C composite particles by a simple heat treatment process using a mixture of polyvinylidene fluoride (PVDF) and SiO2. This simple technique for fabricating yolk-shell structures involves the simultaneous carbonization of a carbon source and etching of SiO2 during the heat treatment. During the fabrication process, PVDF and SiO2 particles were mixed and heat treated, and the changes in the mixture before and after the heat treatment were examined by mass measurement, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS) analysis. The mass of the mixture, which decreased after heat treatment, decreased even further at 400°C because of the active thermal decomposition of PVDF in particular. These results, which were confirmed through TEM, were attributed to the loss of decomposed gases and SiO2 etching by HF gas. As a result, the yolk-shell-structured SiO2/C composite particles are formed a carbonized carbon layer through the heat treatment of PVDF while empty spaces are formed by etching the core SiO2 with HF generated by the thermal decomposition of PVDF. Thus, carbonization and SiO2 etching were simultaneously performed in a single heat treatment process to fabricate the yolk-shell-structured particles.

AB - This study devised a method for manufacturing yolk-shell-structured SiO2/C composite particles by a simple heat treatment process using a mixture of polyvinylidene fluoride (PVDF) and SiO2. This simple technique for fabricating yolk-shell structures involves the simultaneous carbonization of a carbon source and etching of SiO2 during the heat treatment. During the fabrication process, PVDF and SiO2 particles were mixed and heat treated, and the changes in the mixture before and after the heat treatment were examined by mass measurement, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS) analysis. The mass of the mixture, which decreased after heat treatment, decreased even further at 400°C because of the active thermal decomposition of PVDF in particular. These results, which were confirmed through TEM, were attributed to the loss of decomposed gases and SiO2 etching by HF gas. As a result, the yolk-shell-structured SiO2/C composite particles are formed a carbonized carbon layer through the heat treatment of PVDF while empty spaces are formed by etching the core SiO2 with HF generated by the thermal decomposition of PVDF. Thus, carbonization and SiO2 etching were simultaneously performed in a single heat treatment process to fabricate the yolk-shell-structured particles.

KW - Carbon Coating

KW - Etching

KW - Heat Treatment

KW - Polyvinylidene Fluoride

KW - SiO

UR - https://www.scopus.com/pages/publications/85169813421

U2 - 10.3795/KSME-B.2023.47.8.415

DO - 10.3795/KSME-B.2023.47.8.415

M3 - Journal article

AN - SCOPUS:85169813421

SN - 1226-4881

VL - 47

SP - 415

EP - 422

JO - Transactions of the Korean Society of Mechanical Engineers, B

JF - Transactions of the Korean Society of Mechanical Engineers, B

IS - 8

ER -

PVDF(polyvinylidene fluoride)와 SiO2의 열처리를 이용한 요크-쉘(yolk-shell) 구조의 SiO2/C 입자 합성

Abstract

UN SDGs

Keywords

Quacquarelli Symonds(QS) Subject Topics

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