Nanofiber Cellulose-Incorporated Nanomesh Graphene–Carbon Nanotube Buckypaper and Ionic Liquid-Based Solid Polymer Electrolyte for Flexible Supercapacitors

Yeon Jun Choi, Dae Soo Jung, Jae Hee Han, Geon Woo Lee, Sung Eun Wang, Young Hwan Kim, Byung Hoon Park, Dong Hack Suh, Tae Ho Kim, Kwang Bum Kim

Research output: Contribution to journalArticle

Abstract

Flexible all-solid-state supercapacitors are actively investigated for their potential applications in flexible and wearable electronic devices. The important challenge in this field is to achieve a long-term cycling stability under repeated bending and high energy. Herein, the design and synthesis of the following are reported: 1) nanofiber cellulose (NFC)-incorporated nanomesh graphene–carbon nanotube (CNT) hybrid buckypaper electrodes with an excellent flexibility and a high specific capacitance and 2) an ionic liquid-based solid polymer electrolyte with an excellent mechanical flexibility to realize the aims. Herein, the NFC is used to increase the packing density of the buckypaper through the hydrophobic interaction with CNTs, thereby improving the mechanical flexibility. As for the solid polymer electrolyte, the crosslinked structure is induced to provide the pathways for ion conduction and mechanical integrity even at a high ionic liquid content by chemically attaching triethoxysilane end groups to poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) triblock copolymer. The sandwich structure of 1) and 2) exhibits an excellent cycling stability over 5000 bending cycles and high areal energy density (247 μWh cm−2), which are superior to those previously reported in flexible supercapacitors.

Original languageEnglish
Article number1900014
JournalEnergy Technology
Volume7
Issue number5
DOIs
Publication statusPublished - 2019 Apr

Fingerprint

Nanofibers
Ionic liquids
Nanotubes
Cellulose
Electrolytes
Polyethylene oxides
Polymers
Flexible electronics
Polypropylene oxides
Sandwich structures
Block copolymers
Capacitance
Electrodes
Ions
Supercapacitor

All Science Journal Classification (ASJC) codes

  • Energy(all)

Cite this

Choi, Yeon Jun ; Jung, Dae Soo ; Han, Jae Hee ; Lee, Geon Woo ; Wang, Sung Eun ; Kim, Young Hwan ; Park, Byung Hoon ; Suh, Dong Hack ; Kim, Tae Ho ; Kim, Kwang Bum. / Nanofiber Cellulose-Incorporated Nanomesh Graphene–Carbon Nanotube Buckypaper and Ionic Liquid-Based Solid Polymer Electrolyte for Flexible Supercapacitors. In: Energy Technology. 2019 ; Vol. 7, No. 5.
@article{1a7f7fc2ad484b3d951053c0f2b124e2,
title = "Nanofiber Cellulose-Incorporated Nanomesh Graphene–Carbon Nanotube Buckypaper and Ionic Liquid-Based Solid Polymer Electrolyte for Flexible Supercapacitors",
abstract = "Flexible all-solid-state supercapacitors are actively investigated for their potential applications in flexible and wearable electronic devices. The important challenge in this field is to achieve a long-term cycling stability under repeated bending and high energy. Herein, the design and synthesis of the following are reported: 1) nanofiber cellulose (NFC)-incorporated nanomesh graphene–carbon nanotube (CNT) hybrid buckypaper electrodes with an excellent flexibility and a high specific capacitance and 2) an ionic liquid-based solid polymer electrolyte with an excellent mechanical flexibility to realize the aims. Herein, the NFC is used to increase the packing density of the buckypaper through the hydrophobic interaction with CNTs, thereby improving the mechanical flexibility. As for the solid polymer electrolyte, the crosslinked structure is induced to provide the pathways for ion conduction and mechanical integrity even at a high ionic liquid content by chemically attaching triethoxysilane end groups to poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) triblock copolymer. The sandwich structure of 1) and 2) exhibits an excellent cycling stability over 5000 bending cycles and high areal energy density (247 μWh cm−2), which are superior to those previously reported in flexible supercapacitors.",
author = "Choi, {Yeon Jun} and Jung, {Dae Soo} and Han, {Jae Hee} and Lee, {Geon Woo} and Wang, {Sung Eun} and Kim, {Young Hwan} and Park, {Byung Hoon} and Suh, {Dong Hack} and Kim, {Tae Ho} and Kim, {Kwang Bum}",
year = "2019",
month = "4",
doi = "10.1002/ente.201900014",
language = "English",
volume = "7",
journal = "Energy Technology",
issn = "2194-4288",
publisher = "Wiley - VCH Verlag GmbH & CO. KGaA",
number = "5",

}

Nanofiber Cellulose-Incorporated Nanomesh Graphene–Carbon Nanotube Buckypaper and Ionic Liquid-Based Solid Polymer Electrolyte for Flexible Supercapacitors. / Choi, Yeon Jun; Jung, Dae Soo; Han, Jae Hee; Lee, Geon Woo; Wang, Sung Eun; Kim, Young Hwan; Park, Byung Hoon; Suh, Dong Hack; Kim, Tae Ho; Kim, Kwang Bum.

In: Energy Technology, Vol. 7, No. 5, 1900014, 04.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Nanofiber Cellulose-Incorporated Nanomesh Graphene–Carbon Nanotube Buckypaper and Ionic Liquid-Based Solid Polymer Electrolyte for Flexible Supercapacitors

AU - Choi, Yeon Jun

AU - Jung, Dae Soo

AU - Han, Jae Hee

AU - Lee, Geon Woo

AU - Wang, Sung Eun

AU - Kim, Young Hwan

AU - Park, Byung Hoon

AU - Suh, Dong Hack

AU - Kim, Tae Ho

AU - Kim, Kwang Bum

PY - 2019/4

Y1 - 2019/4

N2 - Flexible all-solid-state supercapacitors are actively investigated for their potential applications in flexible and wearable electronic devices. The important challenge in this field is to achieve a long-term cycling stability under repeated bending and high energy. Herein, the design and synthesis of the following are reported: 1) nanofiber cellulose (NFC)-incorporated nanomesh graphene–carbon nanotube (CNT) hybrid buckypaper electrodes with an excellent flexibility and a high specific capacitance and 2) an ionic liquid-based solid polymer electrolyte with an excellent mechanical flexibility to realize the aims. Herein, the NFC is used to increase the packing density of the buckypaper through the hydrophobic interaction with CNTs, thereby improving the mechanical flexibility. As for the solid polymer electrolyte, the crosslinked structure is induced to provide the pathways for ion conduction and mechanical integrity even at a high ionic liquid content by chemically attaching triethoxysilane end groups to poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) triblock copolymer. The sandwich structure of 1) and 2) exhibits an excellent cycling stability over 5000 bending cycles and high areal energy density (247 μWh cm−2), which are superior to those previously reported in flexible supercapacitors.

AB - Flexible all-solid-state supercapacitors are actively investigated for their potential applications in flexible and wearable electronic devices. The important challenge in this field is to achieve a long-term cycling stability under repeated bending and high energy. Herein, the design and synthesis of the following are reported: 1) nanofiber cellulose (NFC)-incorporated nanomesh graphene–carbon nanotube (CNT) hybrid buckypaper electrodes with an excellent flexibility and a high specific capacitance and 2) an ionic liquid-based solid polymer electrolyte with an excellent mechanical flexibility to realize the aims. Herein, the NFC is used to increase the packing density of the buckypaper through the hydrophobic interaction with CNTs, thereby improving the mechanical flexibility. As for the solid polymer electrolyte, the crosslinked structure is induced to provide the pathways for ion conduction and mechanical integrity even at a high ionic liquid content by chemically attaching triethoxysilane end groups to poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) triblock copolymer. The sandwich structure of 1) and 2) exhibits an excellent cycling stability over 5000 bending cycles and high areal energy density (247 μWh cm−2), which are superior to those previously reported in flexible supercapacitors.

UR - http://www.scopus.com/inward/record.url?scp=85064484261&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85064484261&partnerID=8YFLogxK

U2 - 10.1002/ente.201900014

DO - 10.1002/ente.201900014

M3 - Article

AN - SCOPUS:85064484261

VL - 7

JO - Energy Technology

JF - Energy Technology

SN - 2194-4288

IS - 5

M1 - 1900014

ER -