Electrochemical alkali metal intercalation into the 3D-framework of MP2O7 (M = Mo, W)

Yasushi Uebou, Shigeto Okada, Jun Ichi Yamaki

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Lithium and sodium insertions into pyrophosphates MP2O7 (M = Mo, W) were investigated electrochemically as possible cathodes for ion-transfer batteries. Lithium and sodium were reversibly incorporated in the 3D-framework of pyrophosphates MP2O7 (M = Mo, W) with liquid organic electrolytes at room temperature. The first discharge capacities were 95 mAhg-1 for A1.0MoP2O7 (A = Li, Na) and 295 mAhg-1 for A4.0WP2O7 (A = Li, Na), respectively. The guest (Li or Na) insertion into WP2O7 induced a transition to the amorphous phase, whereas the insertion into MoP2O7 proceeded topotactically with a smooth single phase reaction.

Original languageEnglish
Pages (from-to)308-312
Number of pages5
JournalElectrochemistry
Volume71
Issue number5
Publication statusPublished - May 2003

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Alkali Metals
Diphosphates
Alkali metals
Intercalation
Lithium
Sodium
Electrolytes
Cathodes
Ions
Liquids
Temperature

All Science Journal Classification (ASJC) codes

  • Electrochemistry

Cite this

Electrochemical alkali metal intercalation into the 3D-framework of MP2O7 (M = Mo, W). / Uebou, Yasushi; Okada, Shigeto; Yamaki, Jun Ichi.

In: Electrochemistry, Vol. 71, No. 5, 05.2003, p. 308-312.

Research output: Contribution to journalArticle

Uebou, Yasushi ; Okada, Shigeto ; Yamaki, Jun Ichi. / Electrochemical alkali metal intercalation into the 3D-framework of MP2O7 (M = Mo, W). In: Electrochemistry. 2003 ; Vol. 71, No. 5. pp. 308-312.
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