A new sol-gel synthesis of Mn3O4 oxide and its electrochemical behavior in alkaline medium - Sorbonne Université Access content directly
Journal Articles Ionics Year : 2012

A new sol-gel synthesis of Mn3O4 oxide and its electrochemical behavior in alkaline medium

Abstract

In this investigation, Mn3O4 spinel-type oxide was synthesized at low temperature using the Pechini process. We employed a sol-gel route, in which a solution of Mn(II) in a mixture of citric acid and ethylene glycol was heated to form a polymeric precursor, followed by annealing at lower temperature. The oxide obtained was identified by X-ray diffraction, scanning electron spectroscopy, and Raman spectroscopy. The results revealed that the formation of Mn3O4 hausmannite structure with a minor secondary phase of MnSO4 occurred at or above 280 A degrees C. The sample powder consisted of fine grains with homogeneous morphology and an average size close to 1 mu m was obtained. This new preparation procedure yielded an electrode oxide which appears to be a promising cathode material for fuel cells and metal-air batteries.

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hal-00787882 , version 1 (13-02-2013)

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F. Nâamoune, B. Messaoudi, A. Kahoul, N. Cherchour, Alain Pailleret, et al.. A new sol-gel synthesis of Mn3O4 oxide and its electrochemical behavior in alkaline medium. Ionics, 2012, 18 (4), pp.365-370. ⟨10.1007/s11581-011-0621-8⟩. ⟨hal-00787882⟩
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