Electrochemical Alkali Metal Intercalation into the 3D-framework of MP_2O_7 (M=Mo, W)

Yasushi Uebou; Shigeto Okada; Jun-ichi Yamaki

doi:10.5796/electrochemistry.71.308

Electrochemical Alkali Metal Intercalation into the 3D-framework of MP_2O_7 (M=Mo, W)

Yasushi Uebou, Shigeto Okada, Jun-ichi Yamaki

Department of Advanced Device Materials

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

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 language	English
Pages (from-to)	308-312
Number of pages	5
Journal	Electrochemistry
Volume	71
Issue number	5
DOIs	https://doi.org/10.5796/electrochemistry.71.308
Publication status	Published - May 5 2003

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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.",

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N2 - 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.

AB - 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.

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Electrochemical Alkali Metal Intercalation into the 3D-framework of MP_2O_7 (M=Mo, W)

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