A magnetic field assisted self-assembly strategy towards strongly coupled Fe3O4 nanocrystal/rGO paper for high-performance lithium ion batteries

Kan Zhang, Wei Zhao, Jeong Taik Lee, Geewoo Jang, Xinjian Shi, Jong Hyeok Park

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Quantum sized nanocrystals (NCs) have theoretically provided higher electrochemical activity for lithium ion batteries than their bulk counterparts due to their large surface area and short diffusion distance for Li+ ions. With ever-increasing interest in the development of next-generation, high-performance and flexible LIBs, reduced graphene oxide (rGO)/quantum sized NC hybrid papers are being considered to be one of the promising configurations for these special needs. However, one of the challenges regarding this kind of hybrid paper is how to control the uniform size distribution and monodispersibility, as well as keeping it on rGO sheets individually separated. In this work, a remarkably high reversible capacity (1140 mA h g-1 at a current density of 1 C) and long-term stability (at least 220 cycles) for lithium storage over a flexible rGO/Fe3O4 NC (∼2 nm) paper have been achieved. A viable polyelectrolyte-assisted synthesis of strongly coupled rGO/Fe3O4 hybrids has demonstrated the self-assembled magnetite hybrid paper at the air/liquid interface, with the help of an external magnetic field. Crystallographic and microscopic characterizations revealed that the Fe3O4 nanocrystals still retained high-crystallinity, well-dispersibility and original size after long-term cycles, with negligibly slight aggregation. This journal is

Original languageEnglish
Pages (from-to)9636-9644
Number of pages9
JournalJournal of Materials Chemistry A
Volume2
Issue number25
DOIs
Publication statusPublished - 2014 Jul 7

Fingerprint

Graphite
Nanocrystals
Self assembly
Oxides
Graphene
Magnetic fields
Ferrosoferric Oxide
Magnetite
Polyelectrolytes
Lithium
Current density
Agglomeration
Ions
Lithium-ion batteries
Liquids
Air

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

@article{752dcf13871142599e1b6e5f6d6c99e8,
title = "A magnetic field assisted self-assembly strategy towards strongly coupled Fe3O4 nanocrystal/rGO paper for high-performance lithium ion batteries",
abstract = "Quantum sized nanocrystals (NCs) have theoretically provided higher electrochemical activity for lithium ion batteries than their bulk counterparts due to their large surface area and short diffusion distance for Li+ ions. With ever-increasing interest in the development of next-generation, high-performance and flexible LIBs, reduced graphene oxide (rGO)/quantum sized NC hybrid papers are being considered to be one of the promising configurations for these special needs. However, one of the challenges regarding this kind of hybrid paper is how to control the uniform size distribution and monodispersibility, as well as keeping it on rGO sheets individually separated. In this work, a remarkably high reversible capacity (1140 mA h g-1 at a current density of 1 C) and long-term stability (at least 220 cycles) for lithium storage over a flexible rGO/Fe3O4 NC (∼2 nm) paper have been achieved. A viable polyelectrolyte-assisted synthesis of strongly coupled rGO/Fe3O4 hybrids has demonstrated the self-assembled magnetite hybrid paper at the air/liquid interface, with the help of an external magnetic field. Crystallographic and microscopic characterizations revealed that the Fe3O4 nanocrystals still retained high-crystallinity, well-dispersibility and original size after long-term cycles, with negligibly slight aggregation. This journal is",
author = "Kan Zhang and Wei Zhao and Lee, {Jeong Taik} and Geewoo Jang and Xinjian Shi and Park, {Jong Hyeok}",
year = "2014",
month = "7",
day = "7",
doi = "10.1039/c4ta00821a",
language = "English",
volume = "2",
pages = "9636--9644",
journal = "Journal of Materials Chemistry A",
issn = "2050-7488",
publisher = "Royal Society of Chemistry",
number = "25",

}

A magnetic field assisted self-assembly strategy towards strongly coupled Fe3O4 nanocrystal/rGO paper for high-performance lithium ion batteries. / Zhang, Kan; Zhao, Wei; Lee, Jeong Taik; Jang, Geewoo; Shi, Xinjian; Park, Jong Hyeok.

In: Journal of Materials Chemistry A, Vol. 2, No. 25, 07.07.2014, p. 9636-9644.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A magnetic field assisted self-assembly strategy towards strongly coupled Fe3O4 nanocrystal/rGO paper for high-performance lithium ion batteries

AU - Zhang, Kan

AU - Zhao, Wei

AU - Lee, Jeong Taik

AU - Jang, Geewoo

AU - Shi, Xinjian

AU - Park, Jong Hyeok

PY - 2014/7/7

Y1 - 2014/7/7

N2 - Quantum sized nanocrystals (NCs) have theoretically provided higher electrochemical activity for lithium ion batteries than their bulk counterparts due to their large surface area and short diffusion distance for Li+ ions. With ever-increasing interest in the development of next-generation, high-performance and flexible LIBs, reduced graphene oxide (rGO)/quantum sized NC hybrid papers are being considered to be one of the promising configurations for these special needs. However, one of the challenges regarding this kind of hybrid paper is how to control the uniform size distribution and monodispersibility, as well as keeping it on rGO sheets individually separated. In this work, a remarkably high reversible capacity (1140 mA h g-1 at a current density of 1 C) and long-term stability (at least 220 cycles) for lithium storage over a flexible rGO/Fe3O4 NC (∼2 nm) paper have been achieved. A viable polyelectrolyte-assisted synthesis of strongly coupled rGO/Fe3O4 hybrids has demonstrated the self-assembled magnetite hybrid paper at the air/liquid interface, with the help of an external magnetic field. Crystallographic and microscopic characterizations revealed that the Fe3O4 nanocrystals still retained high-crystallinity, well-dispersibility and original size after long-term cycles, with negligibly slight aggregation. This journal is

AB - Quantum sized nanocrystals (NCs) have theoretically provided higher electrochemical activity for lithium ion batteries than their bulk counterparts due to their large surface area and short diffusion distance for Li+ ions. With ever-increasing interest in the development of next-generation, high-performance and flexible LIBs, reduced graphene oxide (rGO)/quantum sized NC hybrid papers are being considered to be one of the promising configurations for these special needs. However, one of the challenges regarding this kind of hybrid paper is how to control the uniform size distribution and monodispersibility, as well as keeping it on rGO sheets individually separated. In this work, a remarkably high reversible capacity (1140 mA h g-1 at a current density of 1 C) and long-term stability (at least 220 cycles) for lithium storage over a flexible rGO/Fe3O4 NC (∼2 nm) paper have been achieved. A viable polyelectrolyte-assisted synthesis of strongly coupled rGO/Fe3O4 hybrids has demonstrated the self-assembled magnetite hybrid paper at the air/liquid interface, with the help of an external magnetic field. Crystallographic and microscopic characterizations revealed that the Fe3O4 nanocrystals still retained high-crystallinity, well-dispersibility and original size after long-term cycles, with negligibly slight aggregation. This journal is

UR - http://www.scopus.com/inward/record.url?scp=84902662866&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84902662866&partnerID=8YFLogxK

U2 - 10.1039/c4ta00821a

DO - 10.1039/c4ta00821a

M3 - Article

AN - SCOPUS:84902662866

VL - 2

SP - 9636

EP - 9644

JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

SN - 2050-7488

IS - 25

ER -