Li2NiO2 as a novel cathode additive for overdischarge protection of li-ion batteries

Hochun Lee; Sung Kyun Chang; Eun Young Goh; Jun Yong Jeong; Jae Hyun Lee; Hyeong Jin Kim; Jeong Ju Cho; Seung Tae Hong

doi:10.1021/cm702290p

Li₂NiO₂ as a novel cathode additive for overdischarge protection of li-ion batteries

Hochun Lee
, Sung Kyun Chang
, Eun Young Goh
, Jun Yong Jeong
, Jae Hyun Lee
, Hyeong Jin Kim
, Jeong Ju Cho
, Seung Tae Hong

Department of Energy and Science and Engineering

LG Corporation

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

88 Scopus citations

Abstract

The use of orthorhombic Immm Li₂NiO₂as a cathode additive for the purpose of overdischarge (OD) protection of Li-ion batteries (LIB) is introduced to meet the first cycle columbic efficiency of conventional cathode materials without deteriorating their characteristics. Orthorhombic Immm Li₂NiO₂ was prepared from a mixture of Li₂O (Alderich,97 %) and NiO (Alderich, 99%) in the stoichiometric composition of 1:1. Li₂NiO₂ powder was added into LiCoO₂ slurry and mixed to prepare the composite cathode. Overdischarge tests were performed on the cycled cells by applying constant current of 300 mA to 3V, 3 mA to 2.7, and finally 1mA to 0 V. The damage by overdischarge is estimated with the 1 C capacity ratio before and after three repeated overdischarge tests.

Original language	English
Pages (from-to)	5-7
Number of pages	3
Journal	Chemistry of Materials
Volume	20
Issue number	1
DOIs	https://doi.org/10.1021/cm702290p
State	Published - 8 Jan 2008

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title = "Li2NiO2 as a novel cathode additive for overdischarge protection of li-ion batteries",

abstract = "The use of orthorhombic Immm Li2NiO2as a cathode additive for the purpose of overdischarge (OD) protection of Li-ion batteries (LIB) is introduced to meet the first cycle columbic efficiency of conventional cathode materials without deteriorating their characteristics. Orthorhombic Immm Li2NiO2 was prepared from a mixture of Li2O (Alderich,97 \%) and NiO (Alderich, 99\%) in the stoichiometric composition of 1:1. Li2NiO2 powder was added into LiCoO2 slurry and mixed to prepare the composite cathode. Overdischarge tests were performed on the cycled cells by applying constant current of 300 mA to 3V, 3 mA to 2.7, and finally 1mA to 0 V. The damage by overdischarge is estimated with the 1 C capacity ratio before and after three repeated overdischarge tests.",

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doi = "10.1021/cm702290p",

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T1 - Li2NiO2 as a novel cathode additive for overdischarge protection of li-ion batteries

AU - Lee, Hochun

AU - Chang, Sung Kyun

AU - Goh, Eun Young

AU - Jeong, Jun Yong

AU - Lee, Jae Hyun

AU - Kim, Hyeong Jin

AU - Cho, Jeong Ju

AU - Hong, Seung Tae

PY - 2008/1/8

Y1 - 2008/1/8

N2 - The use of orthorhombic Immm Li2NiO2as a cathode additive for the purpose of overdischarge (OD) protection of Li-ion batteries (LIB) is introduced to meet the first cycle columbic efficiency of conventional cathode materials without deteriorating their characteristics. Orthorhombic Immm Li2NiO2 was prepared from a mixture of Li2O (Alderich,97 %) and NiO (Alderich, 99%) in the stoichiometric composition of 1:1. Li2NiO2 powder was added into LiCoO2 slurry and mixed to prepare the composite cathode. Overdischarge tests were performed on the cycled cells by applying constant current of 300 mA to 3V, 3 mA to 2.7, and finally 1mA to 0 V. The damage by overdischarge is estimated with the 1 C capacity ratio before and after three repeated overdischarge tests.

AB - The use of orthorhombic Immm Li2NiO2as a cathode additive for the purpose of overdischarge (OD) protection of Li-ion batteries (LIB) is introduced to meet the first cycle columbic efficiency of conventional cathode materials without deteriorating their characteristics. Orthorhombic Immm Li2NiO2 was prepared from a mixture of Li2O (Alderich,97 %) and NiO (Alderich, 99%) in the stoichiometric composition of 1:1. Li2NiO2 powder was added into LiCoO2 slurry and mixed to prepare the composite cathode. Overdischarge tests were performed on the cycled cells by applying constant current of 300 mA to 3V, 3 mA to 2.7, and finally 1mA to 0 V. The damage by overdischarge is estimated with the 1 C capacity ratio before and after three repeated overdischarge tests.

UR - https://www.scopus.com/pages/publications/39149141364

U2 - 10.1021/cm702290p

DO - 10.1021/cm702290p

M3 - Article

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SP - 5

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JO - Chemistry of Materials

JF - Chemistry of Materials

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ER -

Li₂NiO₂ as a novel cathode additive for overdischarge protection of li-ion batteries

Abstract

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