Cathode properties of phospho-olivine LiMPO4 for lithium secondary batteries

Shigeto Okada; Shoichiro Sawa; Minato Egashira; Jun Ichi Yamaki; Mitsuharu Tabuchi; Hiroyuki Kageyama; Tokuzo Konishi; Akira Yoshino

doi:10.1016/S0378-7753(01)00631-0

Cathode properties of phospho-olivine LiMPO₄ for lithium secondary batteries

Shigeto Okada, Shoichiro Sawa, Minato Egashira, Jun Ichi Yamaki, Mitsuharu Tabuchi, Hiroyuki Kageyama, Tokuzo Konishi, Akira Yoshino

Department of Advanced Device Materials

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

353 Citations (Scopus)

Abstract

Four types of orthorhombic olivine LiMPO₄ (M:Co, Fe, Ni and Mn) were investigated as high-voltage cathode active materials for lithium secondary batteries. LiCoPO₄ exhibited the highest 4.8 V discharge plateau of 100 mAh/g versus Li/Li⁺ after initial charging to 5.1 V and its energy density was comparable to that of layered rocksalt LiCoO₂ (120 mAh/g × 4 V = 480 mWh/g). In contrast, the open circuit voltage profile of LiFePO₄ was 160 mAh/g on the 3 V plateau. The Co²⁺ state in LiCoPO₄ was confirmed using HRXRF.

Original language	English
Pages (from-to)	430-432
Number of pages	3
Journal	Journal of Power Sources
Volume	97-98
DOIs	https://doi.org/10.1016/S0378-7753(01)00631-0
Publication status	Published - Jul 2001
Event	10th International Meeting on Lithium Batteries - Como, Italy Duration: May 28 2001 → Jun 2 2001

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/S0378-7753(01)00631-0

Cite this

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title = "Cathode properties of phospho-olivine LiMPO4 for lithium secondary batteries",

abstract = "Four types of orthorhombic olivine LiMPO4 (M:Co, Fe, Ni and Mn) were investigated as high-voltage cathode active materials for lithium secondary batteries. LiCoPO4 exhibited the highest 4.8 V discharge plateau of 100 mAh/g versus Li/Li+ after initial charging to 5.1 V and its energy density was comparable to that of layered rocksalt LiCoO2 (120 mAh/g × 4 V = 480 mWh/g). In contrast, the open circuit voltage profile of LiFePO4 was 160 mAh/g on the 3 V plateau. The Co2+ state in LiCoPO4 was confirmed using HRXRF.",

author = "Shigeto Okada and Shoichiro Sawa and Minato Egashira and Yamaki, {Jun Ichi} and Mitsuharu Tabuchi and Hiroyuki Kageyama and Tokuzo Konishi and Akira Yoshino",

year = "2001",

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language = "English",

volume = "97-98",

pages = "430--432",

journal = "Journal of Power Sources",

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T1 - Cathode properties of phospho-olivine LiMPO4 for lithium secondary batteries

AU - Okada, Shigeto

AU - Sawa, Shoichiro

AU - Egashira, Minato

AU - Yamaki, Jun Ichi

AU - Tabuchi, Mitsuharu

AU - Kageyama, Hiroyuki

AU - Konishi, Tokuzo

AU - Yoshino, Akira

PY - 2001/7

Y1 - 2001/7

N2 - Four types of orthorhombic olivine LiMPO4 (M:Co, Fe, Ni and Mn) were investigated as high-voltage cathode active materials for lithium secondary batteries. LiCoPO4 exhibited the highest 4.8 V discharge plateau of 100 mAh/g versus Li/Li+ after initial charging to 5.1 V and its energy density was comparable to that of layered rocksalt LiCoO2 (120 mAh/g × 4 V = 480 mWh/g). In contrast, the open circuit voltage profile of LiFePO4 was 160 mAh/g on the 3 V plateau. The Co2+ state in LiCoPO4 was confirmed using HRXRF.

AB - Four types of orthorhombic olivine LiMPO4 (M:Co, Fe, Ni and Mn) were investigated as high-voltage cathode active materials for lithium secondary batteries. LiCoPO4 exhibited the highest 4.8 V discharge plateau of 100 mAh/g versus Li/Li+ after initial charging to 5.1 V and its energy density was comparable to that of layered rocksalt LiCoO2 (120 mAh/g × 4 V = 480 mWh/g). In contrast, the open circuit voltage profile of LiFePO4 was 160 mAh/g on the 3 V plateau. The Co2+ state in LiCoPO4 was confirmed using HRXRF.

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DO - 10.1016/S0378-7753(01)00631-0

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JO - Journal of Power Sources

JF - Journal of Power Sources

T2 - 10th International Meeting on Lithium Batteries

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