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<p>In this work, we report the synthesis and electrochemical characteristics of manganese pyrophosphate as an anode for sodium-ion batteries. The Mn<sub>2</sub>P<sub>2</sub>O<sub>7</sub> is synthesized by the hydrothermal method. Structural analyses (XRD, FTIR, XPS) and morphological analyses (FESEM and HRTEM) results reveal the formation of Mn<sub>2</sub>P<sub>2</sub>O<sub>7</sub>. Mn<sub>2</sub>P<sub>2</sub>O<sub>7</sub>/Na half-cell delivers the first charge/discharge capacity of 224.8/240.2 mAh g<sup>− 1</sup> with columbic efficiency of 93.6%. In Mn<sub>2</sub>P<sub>2</sub>O<sub>7</sub> anodes, sodium storage proceeds by topotactic phase transformation and also preserves the pyrophosphate (P<sub>2</sub>O<sub>7</sub>) framework.</p>

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Unveiling the electrochemical performance of Mn2P2O7 as a conversion anode for sodium-ion battery

  • 期刊论文

  • 发表日期：

    2026年3月6日

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  • Sadish Kumar PM,
  • Vasekaran Mahadevan,
  • Kiruthiga Kaliyamoorthy,
  • Veena Ragupathi

摘要

In this work, we report the synthesis and electrochemical characteristics of manganese pyrophosphate as an anode for sodium-ion batteries. The Mn2P2O7 is synthesized by the hydrothermal method. Structural analyses (XRD, FTIR, XPS) and morphological analyses (FESEM and HRTEM) results reveal the formation of Mn2P2O7. Mn2P2O7/Na half-cell delivers the first charge/discharge capacity of 224.8/240.2 mAh g− 1 with columbic efficiency of 93.6%. In Mn2P2O7 anodes, sodium storage proceeds by topotactic phase transformation and also preserves the pyrophosphate (P2O7) framework.