Electrochemical properties of nanosized Li2MNO3·li(NI0.8CO0.15Al0.05)O2 composite cathode powders

Jung Hyun Kim; Yun Chan Kang

Electrochemical properties of nanosized Li₂MNO₃·li(NI_0.8CO_0.15Al_0.05)O₂ composite cathode powders

Research output: Contribution to journal › Article › peer-review

Abstract

Nanometer-sized LiNi_0.8Co_0.15Al_0.05O₂ and 0.6Li₂MnO₃·0.4LiNi_0.8Co_0.15Al_0.05O₂ powders are prepared by high-temperature flame spray pyrolysis. The 0.6Li₂MnO₃·0.4LiNi_0.8Co_0.15Al_0.05O₂ composite powders post-treated at 700 and 800°C exhibit mixed-layer crystal structures comprising layered Li₂MnO₃ and layered LiNi_0.8Co_0.15Al_0.05O₂ phases. The mean sizes of the composite powders post-treated at 700 and 800°C are 127 and 180 nm, respectively. The layered-layered composite powders have sizes in the nanometer range with a slightly aggregated structure, whereas the layered LiNi_0.8Co_0.15Al_0.05O₂ powders have sizes in micrometer range with a hardly aggregated structure. The discharge capacity of the LiNi_0.8Co_0.15Al_0.05O₂ powders decreases from 163 to 95 mAh g^-1 after 50 cycles with a capacity retention of 58%. The discharge capacity of the 0.6Li₂MnO₃·0.4LiNi_0.8Co_0.15Al_0.05O₂ composite powders decreases from 235 to 200 mAh g^-1 after 50 cycles with a capacity retention of 85%.

Original language	English
Pages (from-to)	3664-3675
Number of pages	12
Journal	International Journal of Electrochemical Science
Volume	8
Issue number	3
Publication status	Published - 2013 Mar
Externally published	Yes

Keywords

Cathode material
Composite material
Flame spray pyrolysis
Lithium-rich material
Nanomaterials

ASJC Scopus subject areas

Electrochemistry

Cite this

@article{1e43c75e28484fba9c26baa8c315a403,

title = "Electrochemical properties of nanosized Li2MNO3·li(NI0.8CO0.15Al0.05)O2 composite cathode powders",

abstract = "Nanometer-sized LiNi0.8Co0.15Al0.05O2 and 0.6Li2MnO3·0.4LiNi0.8Co0.15Al0.05O2 powders are prepared by high-temperature flame spray pyrolysis. The 0.6Li2MnO3·0.4LiNi0.8Co0.15Al0.05O2 composite powders post-treated at 700 and 800°C exhibit mixed-layer crystal structures comprising layered Li2MnO3 and layered LiNi0.8Co0.15Al0.05O2 phases. The mean sizes of the composite powders post-treated at 700 and 800°C are 127 and 180 nm, respectively. The layered-layered composite powders have sizes in the nanometer range with a slightly aggregated structure, whereas the layered LiNi0.8Co0.15Al0.05O2 powders have sizes in micrometer range with a hardly aggregated structure. The discharge capacity of the LiNi0.8Co0.15Al0.05O2 powders decreases from 163 to 95 mAh g-1 after 50 cycles with a capacity retention of 58%. The discharge capacity of the 0.6Li2MnO3·0.4LiNi0.8Co0.15Al0.05O2 composite powders decreases from 235 to 200 mAh g-1 after 50 cycles with a capacity retention of 85%.",

keywords = "Cathode material, Composite material, Flame spray pyrolysis, Lithium-rich material, Nanomaterials",

author = "Kim, {Jung Hyun} and Kang, {Yun Chan}",

year = "2013",

month = mar,

language = "English",

volume = "8",

pages = "3664--3675",

journal = "International Journal of Electrochemical Science",

issn = "1452-3981",

publisher = "Electrochemical Science Group",

number = "3",

}

TY - JOUR

T1 - Electrochemical properties of nanosized Li2MNO3·li(NI0.8CO0.15Al0.05)O2 composite cathode powders

AU - Kim, Jung Hyun

AU - Kang, Yun Chan

PY - 2013/3

Y1 - 2013/3

N2 - Nanometer-sized LiNi0.8Co0.15Al0.05O2 and 0.6Li2MnO3·0.4LiNi0.8Co0.15Al0.05O2 powders are prepared by high-temperature flame spray pyrolysis. The 0.6Li2MnO3·0.4LiNi0.8Co0.15Al0.05O2 composite powders post-treated at 700 and 800°C exhibit mixed-layer crystal structures comprising layered Li2MnO3 and layered LiNi0.8Co0.15Al0.05O2 phases. The mean sizes of the composite powders post-treated at 700 and 800°C are 127 and 180 nm, respectively. The layered-layered composite powders have sizes in the nanometer range with a slightly aggregated structure, whereas the layered LiNi0.8Co0.15Al0.05O2 powders have sizes in micrometer range with a hardly aggregated structure. The discharge capacity of the LiNi0.8Co0.15Al0.05O2 powders decreases from 163 to 95 mAh g-1 after 50 cycles with a capacity retention of 58%. The discharge capacity of the 0.6Li2MnO3·0.4LiNi0.8Co0.15Al0.05O2 composite powders decreases from 235 to 200 mAh g-1 after 50 cycles with a capacity retention of 85%.

AB - Nanometer-sized LiNi0.8Co0.15Al0.05O2 and 0.6Li2MnO3·0.4LiNi0.8Co0.15Al0.05O2 powders are prepared by high-temperature flame spray pyrolysis. The 0.6Li2MnO3·0.4LiNi0.8Co0.15Al0.05O2 composite powders post-treated at 700 and 800°C exhibit mixed-layer crystal structures comprising layered Li2MnO3 and layered LiNi0.8Co0.15Al0.05O2 phases. The mean sizes of the composite powders post-treated at 700 and 800°C are 127 and 180 nm, respectively. The layered-layered composite powders have sizes in the nanometer range with a slightly aggregated structure, whereas the layered LiNi0.8Co0.15Al0.05O2 powders have sizes in micrometer range with a hardly aggregated structure. The discharge capacity of the LiNi0.8Co0.15Al0.05O2 powders decreases from 163 to 95 mAh g-1 after 50 cycles with a capacity retention of 58%. The discharge capacity of the 0.6Li2MnO3·0.4LiNi0.8Co0.15Al0.05O2 composite powders decreases from 235 to 200 mAh g-1 after 50 cycles with a capacity retention of 85%.

KW - Cathode material

KW - Composite material

KW - Flame spray pyrolysis

KW - Lithium-rich material

KW - Nanomaterials

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M3 - Article

AN - SCOPUS:84875066924

SN - 1452-3981

VL - 8

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EP - 3675

JO - International Journal of Electrochemical Science

JF - International Journal of Electrochemical Science

IS - 3

ER -

Electrochemical properties of nanosized Li₂MNO₃·li(NI_0.8CO_0.15Al_0.05)O₂ composite cathode powders

Abstract

Keywords

ASJC Scopus subject areas

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