Electrochemical properties of yolk-shell and hollow CoMn2O 4 powders directly prepared by continuous spray pyrolysis as negative electrode materials for lithium ion batteries

Min Ho Kim, Young Jun Hong, Yun Chan Kang

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

Yolk-shell and hollow CoMn2O4 powders are prepared directly by spray pyrolysis from aqueous spray solutions with different concentrations of sucrose. Phase pure tetragonal CoMn2O4 powders without impurity phases are prepared even without post-treatment. The powders prepared from a spray solution with a low sucrose concentration of 0.1 M have a hollow structure. The single and double-shelled yolk-shell powders prepared from spray solutions with 0.4 and 0.7 M sucrose, respectively, have high discharge capacities of 519 and 573 mAh g-1 in the voltage range of 0.01-3 V, respectively, after 40 cycles at a high discharge rate of 800 mA g-1. However, the thick- and thin-shelled hollow powders prepared from spray solutions without and with 0.1 M sucrose have low discharge capacities of 418 and 276 mAh g-1 after 40 cycles, respectively. The discharge capacities of the yolk-shell powders are as high as 579, 530, and 443 mAh g-1 at discharge rates of 1600, 2400, and 3200 mA g-1 after 40 cycles, respectively.

Original languageEnglish
Pages (from-to)13110-13114
Number of pages5
JournalRSC Advances
Volume3
Issue number32
DOIs
Publication statusPublished - 2013 Aug 28
Externally publishedYes

Fingerprint

Spray pyrolysis
Electrochemical properties
Powders
Sugar (sucrose)
Electrodes
Sucrose
Lithium-ion batteries
Impurities
Electric potential

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

@article{890a7c190bc147b4832162e542cdd5fe,
title = "Electrochemical properties of yolk-shell and hollow CoMn2O 4 powders directly prepared by continuous spray pyrolysis as negative electrode materials for lithium ion batteries",
abstract = "Yolk-shell and hollow CoMn2O4 powders are prepared directly by spray pyrolysis from aqueous spray solutions with different concentrations of sucrose. Phase pure tetragonal CoMn2O4 powders without impurity phases are prepared even without post-treatment. The powders prepared from a spray solution with a low sucrose concentration of 0.1 M have a hollow structure. The single and double-shelled yolk-shell powders prepared from spray solutions with 0.4 and 0.7 M sucrose, respectively, have high discharge capacities of 519 and 573 mAh g-1 in the voltage range of 0.01-3 V, respectively, after 40 cycles at a high discharge rate of 800 mA g-1. However, the thick- and thin-shelled hollow powders prepared from spray solutions without and with 0.1 M sucrose have low discharge capacities of 418 and 276 mAh g-1 after 40 cycles, respectively. The discharge capacities of the yolk-shell powders are as high as 579, 530, and 443 mAh g-1 at discharge rates of 1600, 2400, and 3200 mA g-1 after 40 cycles, respectively.",
author = "Kim, {Min Ho} and Hong, {Young Jun} and Kang, {Yun Chan}",
year = "2013",
month = "8",
day = "28",
doi = "10.1039/c3ra41314d",
language = "English",
volume = "3",
pages = "13110--13114",
journal = "RSC Advances",
issn = "2046-2069",
publisher = "Royal Society of Chemistry",
number = "32",

}

TY - JOUR

T1 - Electrochemical properties of yolk-shell and hollow CoMn2O 4 powders directly prepared by continuous spray pyrolysis as negative electrode materials for lithium ion batteries

AU - Kim, Min Ho

AU - Hong, Young Jun

AU - Kang, Yun Chan

PY - 2013/8/28

Y1 - 2013/8/28

N2 - Yolk-shell and hollow CoMn2O4 powders are prepared directly by spray pyrolysis from aqueous spray solutions with different concentrations of sucrose. Phase pure tetragonal CoMn2O4 powders without impurity phases are prepared even without post-treatment. The powders prepared from a spray solution with a low sucrose concentration of 0.1 M have a hollow structure. The single and double-shelled yolk-shell powders prepared from spray solutions with 0.4 and 0.7 M sucrose, respectively, have high discharge capacities of 519 and 573 mAh g-1 in the voltage range of 0.01-3 V, respectively, after 40 cycles at a high discharge rate of 800 mA g-1. However, the thick- and thin-shelled hollow powders prepared from spray solutions without and with 0.1 M sucrose have low discharge capacities of 418 and 276 mAh g-1 after 40 cycles, respectively. The discharge capacities of the yolk-shell powders are as high as 579, 530, and 443 mAh g-1 at discharge rates of 1600, 2400, and 3200 mA g-1 after 40 cycles, respectively.

AB - Yolk-shell and hollow CoMn2O4 powders are prepared directly by spray pyrolysis from aqueous spray solutions with different concentrations of sucrose. Phase pure tetragonal CoMn2O4 powders without impurity phases are prepared even without post-treatment. The powders prepared from a spray solution with a low sucrose concentration of 0.1 M have a hollow structure. The single and double-shelled yolk-shell powders prepared from spray solutions with 0.4 and 0.7 M sucrose, respectively, have high discharge capacities of 519 and 573 mAh g-1 in the voltage range of 0.01-3 V, respectively, after 40 cycles at a high discharge rate of 800 mA g-1. However, the thick- and thin-shelled hollow powders prepared from spray solutions without and with 0.1 M sucrose have low discharge capacities of 418 and 276 mAh g-1 after 40 cycles, respectively. The discharge capacities of the yolk-shell powders are as high as 579, 530, and 443 mAh g-1 at discharge rates of 1600, 2400, and 3200 mA g-1 after 40 cycles, respectively.

UR - http://www.scopus.com/inward/record.url?scp=84881523105&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84881523105&partnerID=8YFLogxK

U2 - 10.1039/c3ra41314d

DO - 10.1039/c3ra41314d

M3 - Article

VL - 3

SP - 13110

EP - 13114

JO - RSC Advances

JF - RSC Advances

SN - 2046-2069

IS - 32

ER -