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Activation of nano-Ca2MnO4 for electrochemical lithium intercalation

  • Yuri Surace (a1), Mário Simões (a1), Lassi Karvonen (a1), Corsin Battaglia (a1), Simone Pokrant (a1) and Anke Weidenkaff (a2)...

Abstract

Ca2MnO4 nanoparticles were prepared by the Pechini method and acid treated to extract Ca2+ ions. Structural, morphological and spectroscopic analyses by XRD, SEM/EDX, TEM/EDS and Raman revealed the formation of an amorphous outer layer at the particles surface with a preserved inner crystalline bulk. Thanks to the outer layer, which is electrochemically active, the acid-treated compounds showed capacity up to 150 Ah/kg. The crystalline bulk improved cycling stability, allowing reaching capacity retention up to 70% after 30 cycles.

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Keywords

Activation of nano-Ca2MnO4 for electrochemical lithium intercalation

  • Yuri Surace (a1), Mário Simões (a1), Lassi Karvonen (a1), Corsin Battaglia (a1), Simone Pokrant (a1) and Anke Weidenkaff (a2)...

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