Electrochemical Alkali Metal Intercalation into the 3D-framework of MP2O7(M=Mo,W)

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  • Electrochemical Alkali Metal Intercalation into the 3D-framework of MP<sub>2</sub>O<sub>7</sub> (M = Mo, W)

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<p>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.</p>

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  • Electrochemistry

    Electrochemistry 71 (5), 308-312, 2003-05-05

    公益社団法人　電気化学会

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