Details

Autor(en) / Beteiligte

• Zayani, Wissem
• Azizi, Samir
• El‐Nasser, Karam S.
• Othman Ali, Ibraheem
• Molière, Michel
• Fenineche, Nouredine
• Mathlouthi, Hamadi
• Lamloumi, Jilani

Titel

Electrochemical behavior of a spinel zinc ferrite alloy obtained by a simple sol‐gel route for Ni‐MH battery applications

Ist Teil von

• International journal of energy research, 2021-03, Vol.45 (4), p.5235-5247

Ort / Verlag

Chichester, UK: John Wiley & Sons, Inc

Erscheinungsjahr

2021

Quelle

Wiley-Blackwell Journals

Beschreibungen/Notizen

• Summary The hydrogen storage properties of zinc ferrite spinel (ZnFe2O4) alloy were studied, in this work. This alloy, formed applying the sol‐gel technique, was employed as anode in Ni‐MH accumulators. X‐ray diffractogram analysis showed the appearance of the compound spinel with cubic structure. In fact, the crystallite size, specified by the TEM technique, was equal to 30 nm. The hydrogen storage properties of zinc ferrite spinel alloy were examined applying various electromechanical methods (chronopotentiometry, cyclic voltammetry, and chronoamperometry) at the C/10 rate and at room temperature. The maximum discharge capacity value was almost equal to 145 mAh/g. After 100 cycles, a good cycling stability was attained and correlation between the (DH/a2) ratio and the discharge capacity as noticed. The electrolyte/ZnFe2O4 anode interface prior to and following activation was studied utilizing electrochemical impedance spectroscopy. Zinc ferrite spinel (ZnFe2O4) is employed as an innovative anode material in Ni‐MH batteries. The ZnFe2O4 particles were synthesized by the sol gel technique. The electrochemical behavior of ZnFe2O4 is better in front of certain compounds studied. The ZnFe2O4 electrode has an excellent stability during a long cycling. The electrolyte/ZnFe2O4 electrode interface is studied by electrochemical impedance spectroscopy. The electrochemical results of the ZnFe2O4 electrode show the strong potentiality for an electrochemical application of the Ni‐MH batteries.