Study of Co3O4 mesoporous nanosheets prepared by a simple spray-drying process and their electrochemical properties as anode material for lithium secondary batteries

Mun Yeong Son, Jung Hyun Kim, Yun Chan Kang

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Co3O4 nanosheets with superior electrochemical properties are prepared by a spray drying process. The precursor powders with a hollow and a thin-walled structure, obtained by the spray drying process, turn into nanosheets after a post-treatment process at temperatures below 600 C. Citric acid dissolved in the spray solution of the cobalt precursor is a key material for the formation of the hollow thin-walled precursor powders. The mean crystallite sizes of the Co3O4 nanosheets post-treated at 200 and 400 C are 17 and 24 nm, respectively. The mean powder sizes consisting of the nanosheets, as measured from the TEM images, are similar to the mean crystallite sizes of the powders. The discharge capacities of the Co 3O4 nanosheets post-treated at 200 and 400oC are 925 and 1102 mA h g-1, respectively, at a current density of 1400 mA g-1 after 100 cycles, and the corresponding capacity retentions, measured after the first cycle, are 91% and 110%. The initial discharge capacities of the Co3O4 nanosheets post-treated at 400 C are 1199 and 1122 mA h g-1 at high current densities of 3500 and 7000 mA g-1, respectively, and the discharge capacities after 100 cycles are 868 and 695 mA h g-1.

Original languageEnglish
Pages (from-to)44-50
Number of pages7
JournalElectrochimica Acta
Volume116
DOIs
Publication statusPublished - 2014 Jan 10
Externally publishedYes

Fingerprint

Spray drying
Secondary batteries
Nanosheets
Electrochemical properties
Lithium
Anodes
Powders
Crystallite size
Current density
Thin walled structures
Citric acid
Cobalt
Citric Acid
Transmission electron microscopy

Keywords

  • Anode material
  • Cobalt oxide
  • Lithium secondary battery
  • Nanosheet material
  • Spray drying

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

Cite this

@article{4a874abbb71f494ea5ad5b2cbd0278ff,
title = "Study of Co3O4 mesoporous nanosheets prepared by a simple spray-drying process and their electrochemical properties as anode material for lithium secondary batteries",
abstract = "Co3O4 nanosheets with superior electrochemical properties are prepared by a spray drying process. The precursor powders with a hollow and a thin-walled structure, obtained by the spray drying process, turn into nanosheets after a post-treatment process at temperatures below 600 C. Citric acid dissolved in the spray solution of the cobalt precursor is a key material for the formation of the hollow thin-walled precursor powders. The mean crystallite sizes of the Co3O4 nanosheets post-treated at 200 and 400 C are 17 and 24 nm, respectively. The mean powder sizes consisting of the nanosheets, as measured from the TEM images, are similar to the mean crystallite sizes of the powders. The discharge capacities of the Co 3O4 nanosheets post-treated at 200 and 400oC are 925 and 1102 mA h g-1, respectively, at a current density of 1400 mA g-1 after 100 cycles, and the corresponding capacity retentions, measured after the first cycle, are 91{\%} and 110{\%}. The initial discharge capacities of the Co3O4 nanosheets post-treated at 400 C are 1199 and 1122 mA h g-1 at high current densities of 3500 and 7000 mA g-1, respectively, and the discharge capacities after 100 cycles are 868 and 695 mA h g-1.",
keywords = "Anode material, Cobalt oxide, Lithium secondary battery, Nanosheet material, Spray drying",
author = "Son, {Mun Yeong} and Kim, {Jung Hyun} and Kang, {Yun Chan}",
year = "2014",
month = "1",
day = "10",
doi = "10.1016/j.electacta.2013.10.217",
language = "English",
volume = "116",
pages = "44--50",
journal = "Electrochimica Acta",
issn = "0013-4686",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Study of Co3O4 mesoporous nanosheets prepared by a simple spray-drying process and their electrochemical properties as anode material for lithium secondary batteries

AU - Son, Mun Yeong

AU - Kim, Jung Hyun

AU - Kang, Yun Chan

PY - 2014/1/10

Y1 - 2014/1/10

N2 - Co3O4 nanosheets with superior electrochemical properties are prepared by a spray drying process. The precursor powders with a hollow and a thin-walled structure, obtained by the spray drying process, turn into nanosheets after a post-treatment process at temperatures below 600 C. Citric acid dissolved in the spray solution of the cobalt precursor is a key material for the formation of the hollow thin-walled precursor powders. The mean crystallite sizes of the Co3O4 nanosheets post-treated at 200 and 400 C are 17 and 24 nm, respectively. The mean powder sizes consisting of the nanosheets, as measured from the TEM images, are similar to the mean crystallite sizes of the powders. The discharge capacities of the Co 3O4 nanosheets post-treated at 200 and 400oC are 925 and 1102 mA h g-1, respectively, at a current density of 1400 mA g-1 after 100 cycles, and the corresponding capacity retentions, measured after the first cycle, are 91% and 110%. The initial discharge capacities of the Co3O4 nanosheets post-treated at 400 C are 1199 and 1122 mA h g-1 at high current densities of 3500 and 7000 mA g-1, respectively, and the discharge capacities after 100 cycles are 868 and 695 mA h g-1.

AB - Co3O4 nanosheets with superior electrochemical properties are prepared by a spray drying process. The precursor powders with a hollow and a thin-walled structure, obtained by the spray drying process, turn into nanosheets after a post-treatment process at temperatures below 600 C. Citric acid dissolved in the spray solution of the cobalt precursor is a key material for the formation of the hollow thin-walled precursor powders. The mean crystallite sizes of the Co3O4 nanosheets post-treated at 200 and 400 C are 17 and 24 nm, respectively. The mean powder sizes consisting of the nanosheets, as measured from the TEM images, are similar to the mean crystallite sizes of the powders. The discharge capacities of the Co 3O4 nanosheets post-treated at 200 and 400oC are 925 and 1102 mA h g-1, respectively, at a current density of 1400 mA g-1 after 100 cycles, and the corresponding capacity retentions, measured after the first cycle, are 91% and 110%. The initial discharge capacities of the Co3O4 nanosheets post-treated at 400 C are 1199 and 1122 mA h g-1 at high current densities of 3500 and 7000 mA g-1, respectively, and the discharge capacities after 100 cycles are 868 and 695 mA h g-1.

KW - Anode material

KW - Cobalt oxide

KW - Lithium secondary battery

KW - Nanosheet material

KW - Spray drying

UR - http://www.scopus.com/inward/record.url?scp=84889631927&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84889631927&partnerID=8YFLogxK

U2 - 10.1016/j.electacta.2013.10.217

DO - 10.1016/j.electacta.2013.10.217

M3 - Article

AN - SCOPUS:84889631927

VL - 116

SP - 44

EP - 50

JO - Electrochimica Acta

JF - Electrochimica Acta

SN - 0013-4686

ER -