Crystallinity enhancement of flame-made LiCo0.25Ni 0.75O2 nanoparticles by heat-treatment

Hankwon Chang; Hee Dong Jang; Shun Myung Shin; Sung Wook Cho; Dae Sup Kil

doi:10.1016/j.matlet.2010.11.035

Crystallinity enhancement of flame-made LiCo_0.25Ni _0.75O₂ nanoparticles by heat-treatment

Hankwon Chang
, Hee Dong Jang
, Shun Myung Shin
, Sung Wook Cho
, Dae Sup Kil

Geography Education

Korea Institute of Geoscience and Mineral Resources

Research output: Contribution to journal › Journal article › peer-review

2 Scopus citations

Abstract

LiCo_0.25Ni_0.75O₂ nanoparticles of 22.8 nm in geometric mean diameter were synthesized by flame spray pyrolysis from aqueous droplets of nitrate compounds of lithium, cobalt and nickel. The crystallinity of the as-prepared LiCo_0.25Ni_0.75O ₂ particles was enhanced by post-heat-treatment at various conditions, such as temperature, duration, and atmospheric gas with different flow rates. The effect of heat-treatment on the particle morphology and crystallinity was investigated systematically. Higher heat-treating temperature under normal air atmosphere improved hexagonal ordering and sufficient O ₂ flow during the heat-treatment reduced the cation mixing problem.

Original language	English
Pages (from-to)	757-759
Number of pages	3
Journal	Materials Letters
Volume	65
Issue number	4
DOIs	https://doi.org/10.1016/j.matlet.2010.11.035
State	Published - 2011.02.28

Keywords

Crystallinity enhancement
Flame spray pyrolysis
Heat-treatment
LiCoNiO nanoparticles

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10.1016/j.matlet.2010.11.035

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title = "Crystallinity enhancement of flame-made LiCo0.25Ni 0.75O2 nanoparticles by heat-treatment",

abstract = "LiCo0.25Ni0.75O2 nanoparticles of 22.8 nm in geometric mean diameter were synthesized by flame spray pyrolysis from aqueous droplets of nitrate compounds of lithium, cobalt and nickel. The crystallinity of the as-prepared LiCo0.25Ni0.75O 2 particles was enhanced by post-heat-treatment at various conditions, such as temperature, duration, and atmospheric gas with different flow rates. The effect of heat-treatment on the particle morphology and crystallinity was investigated systematically. Higher heat-treating temperature under normal air atmosphere improved hexagonal ordering and sufficient O 2 flow during the heat-treatment reduced the cation mixing problem.",

keywords = "Crystallinity enhancement, Flame spray pyrolysis, Heat-treatment, LiCoNiO nanoparticles",

author = "Hankwon Chang and Jang, \{Hee Dong\} and Shin, \{Shun Myung\} and Cho, \{Sung Wook\} and Kil, \{Dae Sup\}",

year = "2011",

month = feb,

day = "28",

doi = "10.1016/j.matlet.2010.11.035",

language = "English",

volume = "65",

pages = "757--759",

journal = "Materials Letters",

issn = "0167-577X",

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TY - JOUR

T1 - Crystallinity enhancement of flame-made LiCo0.25Ni 0.75O2 nanoparticles by heat-treatment

AU - Chang, Hankwon

AU - Jang, Hee Dong

AU - Shin, Shun Myung

AU - Cho, Sung Wook

AU - Kil, Dae Sup

PY - 2011/2/28

Y1 - 2011/2/28

N2 - LiCo0.25Ni0.75O2 nanoparticles of 22.8 nm in geometric mean diameter were synthesized by flame spray pyrolysis from aqueous droplets of nitrate compounds of lithium, cobalt and nickel. The crystallinity of the as-prepared LiCo0.25Ni0.75O 2 particles was enhanced by post-heat-treatment at various conditions, such as temperature, duration, and atmospheric gas with different flow rates. The effect of heat-treatment on the particle morphology and crystallinity was investigated systematically. Higher heat-treating temperature under normal air atmosphere improved hexagonal ordering and sufficient O 2 flow during the heat-treatment reduced the cation mixing problem.

AB - LiCo0.25Ni0.75O2 nanoparticles of 22.8 nm in geometric mean diameter were synthesized by flame spray pyrolysis from aqueous droplets of nitrate compounds of lithium, cobalt and nickel. The crystallinity of the as-prepared LiCo0.25Ni0.75O 2 particles was enhanced by post-heat-treatment at various conditions, such as temperature, duration, and atmospheric gas with different flow rates. The effect of heat-treatment on the particle morphology and crystallinity was investigated systematically. Higher heat-treating temperature under normal air atmosphere improved hexagonal ordering and sufficient O 2 flow during the heat-treatment reduced the cation mixing problem.

KW - Crystallinity enhancement

KW - Flame spray pyrolysis

KW - Heat-treatment

KW - LiCoNiO nanoparticles

UR - https://www.scopus.com/pages/publications/78650490145

U2 - 10.1016/j.matlet.2010.11.035

DO - 10.1016/j.matlet.2010.11.035

M3 - Journal article

AN - SCOPUS:78650490145

SN - 0167-577X

VL - 65

SP - 757

EP - 759

JO - Materials Letters

JF - Materials Letters

IS - 4

ER -

Crystallinity enhancement of flame-made LiCo_0.25Ni _0.75O₂ nanoparticles by heat-treatment

Abstract

Keywords

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