Cathode properties of pyrophosphates for rechargeable lithium batteries

Yasushi Uebou; Shigeto Okada; Minato Egashira; Jun Ichi Yamaki

doi:10.1016/S0167-2738(02)00069-3

Cathode properties of pyrophosphates for rechargeable lithium batteries

Yasushi Uebou, Shigeto Okada, Minato Egashira, Jun Ichi Yamaki

Department of Advanced Device Materials

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

64 Citations (Scopus)

Abstract

Two rechargeable pyrophosphates, LiVP₂O₇ and TiP₂O₇, were synthesized by a solid state reaction, and the cathode properties were investigated. The structures were characterized by powder X-ray Rietveld refinement. LiVP₂O₇ was isostructural with P2₁ monoclinic LiFeP₂O₇ and TiP₂O₇ was isostructural with Pa3 cubic ZrV₂O₇. Lithium cells using LiVP₂O₇ cathodes showed that approximately 0.5 Li per unit could be reversibly deintercalated from LiVP₂O₇ at 4.1 V vs. Li/Li⁺. On the other hand, 0.6 Li per unit could be reversibly intercalated into TiP₂O₇ at 2.6 V vs. Li/Li⁺.

Original language	English
Pages (from-to)	323-328
Number of pages	6
Journal	Solid State Ionics
Volume	148
Issue number	3-4
DOIs	https://doi.org/10.1016/S0167-2738(02)00069-3
Publication status	Published - Jun 2002

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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@article{0b9e5813616243db896f01d2f307c32b,

title = "Cathode properties of pyrophosphates for rechargeable lithium batteries",

abstract = "Two rechargeable pyrophosphates, LiVP2O7 and TiP2O7, were synthesized by a solid state reaction, and the cathode properties were investigated. The structures were characterized by powder X-ray Rietveld refinement. LiVP2O7 was isostructural with P21 monoclinic LiFeP2O7 and TiP2O7 was isostructural with Pa3 cubic ZrV2O7. Lithium cells using LiVP2O7 cathodes showed that approximately 0.5 Li per unit could be reversibly deintercalated from LiVP2O7 at 4.1 V vs. Li/Li+. On the other hand, 0.6 Li per unit could be reversibly intercalated into TiP2O7 at 2.6 V vs. Li/Li+.",

author = "Yasushi Uebou and Shigeto Okada and Minato Egashira and Yamaki, {Jun Ichi}",

note = "Funding Information: The present work was partially supported by a Grant-in-Aid for the Development of Innovative Technology from the Ministry of Education, Culture, Sports, Science and Technology of Japan. The authors are grateful to Prof. I. Mochida and Prof. Y. Korai of Kyushu University for their generous assistance with the XRD and XPS measurements.",

year = "2002",

month = jun,

doi = "10.1016/S0167-2738(02)00069-3",

language = "English",

volume = "148",

pages = "323--328",

journal = "Solid State Ionics",

issn = "0167-2738",

publisher = "Elsevier",

number = "3-4",

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TY - JOUR

T1 - Cathode properties of pyrophosphates for rechargeable lithium batteries

AU - Uebou, Yasushi

AU - Okada, Shigeto

AU - Egashira, Minato

AU - Yamaki, Jun Ichi

N1 - Funding Information: The present work was partially supported by a Grant-in-Aid for the Development of Innovative Technology from the Ministry of Education, Culture, Sports, Science and Technology of Japan. The authors are grateful to Prof. I. Mochida and Prof. Y. Korai of Kyushu University for their generous assistance with the XRD and XPS measurements.

PY - 2002/6

Y1 - 2002/6

N2 - Two rechargeable pyrophosphates, LiVP2O7 and TiP2O7, were synthesized by a solid state reaction, and the cathode properties were investigated. The structures were characterized by powder X-ray Rietveld refinement. LiVP2O7 was isostructural with P21 monoclinic LiFeP2O7 and TiP2O7 was isostructural with Pa3 cubic ZrV2O7. Lithium cells using LiVP2O7 cathodes showed that approximately 0.5 Li per unit could be reversibly deintercalated from LiVP2O7 at 4.1 V vs. Li/Li+. On the other hand, 0.6 Li per unit could be reversibly intercalated into TiP2O7 at 2.6 V vs. Li/Li+.

AB - Two rechargeable pyrophosphates, LiVP2O7 and TiP2O7, were synthesized by a solid state reaction, and the cathode properties were investigated. The structures were characterized by powder X-ray Rietveld refinement. LiVP2O7 was isostructural with P21 monoclinic LiFeP2O7 and TiP2O7 was isostructural with Pa3 cubic ZrV2O7. Lithium cells using LiVP2O7 cathodes showed that approximately 0.5 Li per unit could be reversibly deintercalated from LiVP2O7 at 4.1 V vs. Li/Li+. On the other hand, 0.6 Li per unit could be reversibly intercalated into TiP2O7 at 2.6 V vs. Li/Li+.

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U2 - 10.1016/S0167-2738(02)00069-3

DO - 10.1016/S0167-2738(02)00069-3

M3 - Article

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SN - 0167-2738

VL - 148

SP - 323

EP - 328

JO - Solid State Ionics

JF - Solid State Ionics

IS - 3-4

ER -

Cathode properties of pyrophosphates for rechargeable lithium batteries

Abstract

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