LiCo1-xAlxO2 (0 ≤ x ≤ 0.05) cathode powders prepared from the nanosized Co1-xAlxOy precursor powders

Seo Hee Ju, Hee Chan Jang, Yun Chan Kang

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Fine LiCo1-xAlxO2 (0 ≤ x ≤ 0.05) cathode powders were prepared by the solid-state reaction method using nanosized Co1-xAlxOy (0 ≤ x ≤ 0.05) precursor powders with various concentrations of aluminum used as the dopant. The Co1-xAlxOy precursor powders prepared by spray pyrolysis had nanometer size and a regular morphology after post-treatment at 800 °C. The aluminum dopant decreased the mean particle sizes of the Co1-xAlxOy precursor powders and LiCo1-xAlxO2 cathode powders. The mean particle sizes of the LiCoO2 and LiCo0.95Al0.05O2 cathode powders were 1.1 and 0.52 μm, respectively. The initial discharge capacities of the LiCoO2 and LiCo0.99Al0.01O2 cathode powders were 151 and 161 mAh g-1, respectively. The discharge capacity of the LiCoO2 cathode powders after the 50th cycle was 90% of their maximum discharge capacity. However, the discharge capacities of the LiCo0.99Al0.01O2, LiCo0.97Al0.03O2, and LiCo0.95Al0.05O2 cathode powders after the 50th cycle were 91, 84, and 82%, respectively, of their respective maximum discharge capacities.

Original languageEnglish
Pages (from-to)536-541
Number of pages6
JournalMaterials Chemistry and Physics
Volume112
Issue number2
DOIs
Publication statusPublished - 2008 Dec 1
Externally publishedYes

Fingerprint

Powders
Cathodes
cathodes
Aluminum
Particle size
Doping (additives)
aluminum
cycles
Spray pyrolysis
Solid state reactions
pyrolysis
sprayers
solid state

Keywords

  • Ceramics
  • Chemical synthesis
  • Electrical properties

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

LiCo1-xAlxO2 (0 ≤ x ≤ 0.05) cathode powders prepared from the nanosized Co1-xAlxOy precursor powders. / Ju, Seo Hee; Jang, Hee Chan; Kang, Yun Chan.

In: Materials Chemistry and Physics, Vol. 112, No. 2, 01.12.2008, p. 536-541.

Research output: Contribution to journalArticle

@article{febad12116d54b97b434ae3c467728d0,
title = "LiCo1-xAlxO2 (0 ≤ x ≤ 0.05) cathode powders prepared from the nanosized Co1-xAlxOy precursor powders",
abstract = "Fine LiCo1-xAlxO2 (0 ≤ x ≤ 0.05) cathode powders were prepared by the solid-state reaction method using nanosized Co1-xAlxOy (0 ≤ x ≤ 0.05) precursor powders with various concentrations of aluminum used as the dopant. The Co1-xAlxOy precursor powders prepared by spray pyrolysis had nanometer size and a regular morphology after post-treatment at 800 °C. The aluminum dopant decreased the mean particle sizes of the Co1-xAlxOy precursor powders and LiCo1-xAlxO2 cathode powders. The mean particle sizes of the LiCoO2 and LiCo0.95Al0.05O2 cathode powders were 1.1 and 0.52 μm, respectively. The initial discharge capacities of the LiCoO2 and LiCo0.99Al0.01O2 cathode powders were 151 and 161 mAh g-1, respectively. The discharge capacity of the LiCoO2 cathode powders after the 50th cycle was 90{\%} of their maximum discharge capacity. However, the discharge capacities of the LiCo0.99Al0.01O2, LiCo0.97Al0.03O2, and LiCo0.95Al0.05O2 cathode powders after the 50th cycle were 91, 84, and 82{\%}, respectively, of their respective maximum discharge capacities.",
keywords = "Ceramics, Chemical synthesis, Electrical properties",
author = "Ju, {Seo Hee} and Jang, {Hee Chan} and Kang, {Yun Chan}",
year = "2008",
month = "12",
day = "1",
doi = "10.1016/j.matchemphys.2008.06.011",
language = "English",
volume = "112",
pages = "536--541",
journal = "Materials Chemistry and Physics",
issn = "0254-0584",
publisher = "Elsevier BV",
number = "2",

}

TY - JOUR

T1 - LiCo1-xAlxO2 (0 ≤ x ≤ 0.05) cathode powders prepared from the nanosized Co1-xAlxOy precursor powders

AU - Ju, Seo Hee

AU - Jang, Hee Chan

AU - Kang, Yun Chan

PY - 2008/12/1

Y1 - 2008/12/1

N2 - Fine LiCo1-xAlxO2 (0 ≤ x ≤ 0.05) cathode powders were prepared by the solid-state reaction method using nanosized Co1-xAlxOy (0 ≤ x ≤ 0.05) precursor powders with various concentrations of aluminum used as the dopant. The Co1-xAlxOy precursor powders prepared by spray pyrolysis had nanometer size and a regular morphology after post-treatment at 800 °C. The aluminum dopant decreased the mean particle sizes of the Co1-xAlxOy precursor powders and LiCo1-xAlxO2 cathode powders. The mean particle sizes of the LiCoO2 and LiCo0.95Al0.05O2 cathode powders were 1.1 and 0.52 μm, respectively. The initial discharge capacities of the LiCoO2 and LiCo0.99Al0.01O2 cathode powders were 151 and 161 mAh g-1, respectively. The discharge capacity of the LiCoO2 cathode powders after the 50th cycle was 90% of their maximum discharge capacity. However, the discharge capacities of the LiCo0.99Al0.01O2, LiCo0.97Al0.03O2, and LiCo0.95Al0.05O2 cathode powders after the 50th cycle were 91, 84, and 82%, respectively, of their respective maximum discharge capacities.

AB - Fine LiCo1-xAlxO2 (0 ≤ x ≤ 0.05) cathode powders were prepared by the solid-state reaction method using nanosized Co1-xAlxOy (0 ≤ x ≤ 0.05) precursor powders with various concentrations of aluminum used as the dopant. The Co1-xAlxOy precursor powders prepared by spray pyrolysis had nanometer size and a regular morphology after post-treatment at 800 °C. The aluminum dopant decreased the mean particle sizes of the Co1-xAlxOy precursor powders and LiCo1-xAlxO2 cathode powders. The mean particle sizes of the LiCoO2 and LiCo0.95Al0.05O2 cathode powders were 1.1 and 0.52 μm, respectively. The initial discharge capacities of the LiCoO2 and LiCo0.99Al0.01O2 cathode powders were 151 and 161 mAh g-1, respectively. The discharge capacity of the LiCoO2 cathode powders after the 50th cycle was 90% of their maximum discharge capacity. However, the discharge capacities of the LiCo0.99Al0.01O2, LiCo0.97Al0.03O2, and LiCo0.95Al0.05O2 cathode powders after the 50th cycle were 91, 84, and 82%, respectively, of their respective maximum discharge capacities.

KW - Ceramics

KW - Chemical synthesis

KW - Electrical properties

UR - http://www.scopus.com/inward/record.url?scp=53349171217&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=53349171217&partnerID=8YFLogxK

U2 - 10.1016/j.matchemphys.2008.06.011

DO - 10.1016/j.matchemphys.2008.06.011

M3 - Article

AN - SCOPUS:53349171217

VL - 112

SP - 536

EP - 541

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

SN - 0254-0584

IS - 2

ER -