Electrochemical properties of nanometer-sized 0.6Li 2MnO 3·0.4LiNi 0.5Mn 0.5O 2 composite powders prepared by flame spray pyrolysis

Jung Hyun Kim, Seung Ho Choi, Mun Yeong Son, Min Ho Kim, Jung Kul Lee, Yun Chan Kang

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Nanometer-sized 0.6Li 2MnO 3·0.4LiNi 0.5Mn 0.5O 2 composite cathode powders are prepared directly by high-temperature flame spray pyrolysis. The precursor powders and the powders post-treated at 800 °C exhibit mixed-layered crystal structures comprising layered Li 2MnO 3 and layered LiNi 0.5Mn 0.5O 2 phases. The discharge capacity of the precursor powders decreased from 193 mAh g -1 to 96 mAh g -1 by the 9th cycle, corresponding to a capacity retention of 49.7%. Post-treatment at 800 °C increases the capacity retention of the post-treated composite powders to 94.6% after 50 cycles, corresponding to a decrease in the discharge capacity from 225 to 213 mAh g -1. The post-treated composite powders that contain a high amount of the Li 2MnO 3 phase have a high initial discharge capacity and good cyclability.

Original languageEnglish
Pages (from-to)331-336
Number of pages6
JournalCeramics International
Volume39
Issue number1
DOIs
Publication statusPublished - 2013 Jan 1
Externally publishedYes

Fingerprint

Spray pyrolysis
Electrochemical properties
Powders
Composite materials
Cathodes
Crystal structure

Keywords

  • Cathode material
  • Composite
  • Nanopowders
  • Spray pyrolysis

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Electrochemical properties of nanometer-sized 0.6Li 2MnO 3·0.4LiNi 0.5Mn 0.5O 2 composite powders prepared by flame spray pyrolysis. / Kim, Jung Hyun; Choi, Seung Ho; Son, Mun Yeong; Kim, Min Ho; Lee, Jung Kul; Kang, Yun Chan.

In: Ceramics International, Vol. 39, No. 1, 01.01.2013, p. 331-336.

Research output: Contribution to journalArticle

Kim, Jung Hyun ; Choi, Seung Ho ; Son, Mun Yeong ; Kim, Min Ho ; Lee, Jung Kul ; Kang, Yun Chan. / Electrochemical properties of nanometer-sized 0.6Li 2MnO 3·0.4LiNi 0.5Mn 0.5O 2 composite powders prepared by flame spray pyrolysis. In: Ceramics International. 2013 ; Vol. 39, No. 1. pp. 331-336.
@article{b1888efd3b8143fba475c387c0647e62,
title = "Electrochemical properties of nanometer-sized 0.6Li 2MnO 3·0.4LiNi 0.5Mn 0.5O 2 composite powders prepared by flame spray pyrolysis",
abstract = "Nanometer-sized 0.6Li 2MnO 3·0.4LiNi 0.5Mn 0.5O 2 composite cathode powders are prepared directly by high-temperature flame spray pyrolysis. The precursor powders and the powders post-treated at 800 °C exhibit mixed-layered crystal structures comprising layered Li 2MnO 3 and layered LiNi 0.5Mn 0.5O 2 phases. The discharge capacity of the precursor powders decreased from 193 mAh g -1 to 96 mAh g -1 by the 9th cycle, corresponding to a capacity retention of 49.7{\%}. Post-treatment at 800 °C increases the capacity retention of the post-treated composite powders to 94.6{\%} after 50 cycles, corresponding to a decrease in the discharge capacity from 225 to 213 mAh g -1. The post-treated composite powders that contain a high amount of the Li 2MnO 3 phase have a high initial discharge capacity and good cyclability.",
keywords = "Cathode material, Composite, Nanopowders, Spray pyrolysis",
author = "Kim, {Jung Hyun} and Choi, {Seung Ho} and Son, {Mun Yeong} and Kim, {Min Ho} and Lee, {Jung Kul} and Kang, {Yun Chan}",
year = "2013",
month = "1",
day = "1",
doi = "10.1016/j.ceramint.2012.06.029",
language = "English",
volume = "39",
pages = "331--336",
journal = "Ceramics International",
issn = "0272-8842",
publisher = "Elsevier Limited",
number = "1",

}

TY - JOUR

T1 - Electrochemical properties of nanometer-sized 0.6Li 2MnO 3·0.4LiNi 0.5Mn 0.5O 2 composite powders prepared by flame spray pyrolysis

AU - Kim, Jung Hyun

AU - Choi, Seung Ho

AU - Son, Mun Yeong

AU - Kim, Min Ho

AU - Lee, Jung Kul

AU - Kang, Yun Chan

PY - 2013/1/1

Y1 - 2013/1/1

N2 - Nanometer-sized 0.6Li 2MnO 3·0.4LiNi 0.5Mn 0.5O 2 composite cathode powders are prepared directly by high-temperature flame spray pyrolysis. The precursor powders and the powders post-treated at 800 °C exhibit mixed-layered crystal structures comprising layered Li 2MnO 3 and layered LiNi 0.5Mn 0.5O 2 phases. The discharge capacity of the precursor powders decreased from 193 mAh g -1 to 96 mAh g -1 by the 9th cycle, corresponding to a capacity retention of 49.7%. Post-treatment at 800 °C increases the capacity retention of the post-treated composite powders to 94.6% after 50 cycles, corresponding to a decrease in the discharge capacity from 225 to 213 mAh g -1. The post-treated composite powders that contain a high amount of the Li 2MnO 3 phase have a high initial discharge capacity and good cyclability.

AB - Nanometer-sized 0.6Li 2MnO 3·0.4LiNi 0.5Mn 0.5O 2 composite cathode powders are prepared directly by high-temperature flame spray pyrolysis. The precursor powders and the powders post-treated at 800 °C exhibit mixed-layered crystal structures comprising layered Li 2MnO 3 and layered LiNi 0.5Mn 0.5O 2 phases. The discharge capacity of the precursor powders decreased from 193 mAh g -1 to 96 mAh g -1 by the 9th cycle, corresponding to a capacity retention of 49.7%. Post-treatment at 800 °C increases the capacity retention of the post-treated composite powders to 94.6% after 50 cycles, corresponding to a decrease in the discharge capacity from 225 to 213 mAh g -1. The post-treated composite powders that contain a high amount of the Li 2MnO 3 phase have a high initial discharge capacity and good cyclability.

KW - Cathode material

KW - Composite

KW - Nanopowders

KW - Spray pyrolysis

UR - http://www.scopus.com/inward/record.url?scp=84869095034&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84869095034&partnerID=8YFLogxK

U2 - 10.1016/j.ceramint.2012.06.029

DO - 10.1016/j.ceramint.2012.06.029

M3 - Article

AN - SCOPUS:84869095034

VL - 39

SP - 331

EP - 336

JO - Ceramics International

JF - Ceramics International

SN - 0272-8842

IS - 1

ER -