DGIST Scholar: Cu Nanowires Covered with Graphene and Hexagonal Boron Nitride for Flexible Transparent Conducting Electrodes

Department of Energy Science and Engineering Theses Master

Cited time in webofscience

Cited time in scopus

Cu Nanowires Covered with Graphene and Hexagonal Boron Nitride for Flexible Transparent Conducting Electrodes

Title: Cu Nanowires Covered with Graphene and Hexagonal Boron Nitride for Flexible Transparent Conducting Electrodes

Author(s): Minkyoung Kim

DGIST Authors: Minkyoung Kim ; Youngu Lee ; Dae-Hyun Nam

Advisor: 이윤구

Co-Advisor(s): Dae-Hyun Nam

Issued Date: 2022

Awarded Date: 2022/02

Type: Thesis

Subject: "Cu nanowire, Core/shell nanowire, solution-phase synthesis, intense pulsed light, solid-state supercapacitor, flexible heater"

Description: "Cu nanowire, Core/shell nanowire, solution-phase synthesis, intense pulsed light, solid-state supercapacitor, flexible heater"

Table Of Contents: Ⅰ. Introduction 1
1.1 Core/shell nanowire 1
1.1.1 Metal material covered Cu nanowire 1
1.1.2 Graphene quantum dots wrapped Cu nanowires 2
1.1.3 Hexagonal boron nitride wrapped Cu nanowires 3
1.2 Flexible transparent conducting electrode 4
1.3 Flexible and transparent heater 4
1.4 Solid-state supercapacitor 5
Ⅱ. Theoretical background 8
2.1 Cu nanowire 8
2.1.1 Growth mechanism of Cu nanowires 8
2.1.2 Synthesis methods for Cu nanowires 11
2.1.3 Purification of Cu nanowires 13
2.2 Synthesis methods for Core/shell NW 15
2.2.1 Chemical vapor deposition (CVD) 15
2.2.2 Electrochemical deposition 16
2.2.3 Solution-phase synthesis 18
2.3 Coating methods for TCE 20
2.3.1 Spray coating 20
2.3.2 Spin coating 21
2.3.3 Bar coating 21
2.3.4 Blade coating 22
2.3.5 Reverse off-set printing 23
2.3.6 Vacuum filtration & transfer technique 24
2.4 Wearable and flexible heat patch 25
2.5 Solid-state supercapacitor 26
2.5.1 Principle of solid-state supercapacitor 27
2.5.2 Gel-electrolyte of solid-state supercapacitor 28
Ⅲ. Experimental 30
3.1 Chemicals and materials 30
3.2 Synthesis of Copper nanowires 30
3.3 Exfoliation of hBN for the shell of core/shell nanostructure 31
3.4 Synthesis of 2D materials-wrapped Cu nanowires 31
3.5 Fabrication of flexible transparent conducting electrode 31
3.6 Fabrication of flexible heat patch 32
3.7 Synthesis of gel electrolyte 32
3.8 Fabrication of flexible solid-state supercapacitor 32
3.9 Characterization 33
Ⅳ. Result and discussion 34
4.1 2D materials wrapped Cu nanowires 34
4.1.1 Core/Shell structured nanowires synthesis 34
4.1.2 IPL process for fabrication of the core/shell NW TCE 37
4.1.3 Chemical properties of core/shell structured nanowires 40
4.2 Electrical and mechanical properties of the TCE 48
4.3 Application 55
4.3.1 Flexible heat patch 55
4.3.2 Flexible solid-state supercapacitor 58
Ⅴ. Conclusion 62
References 63
Summary 69