Secondary alkaline electrochemical generators with a zinc anode

Details Secondary alkaline electrochemical generators with a zinc anode Secondary alkaline electrochemical generators with a zinc anode

H - Electricity

01

M

H01M 4/62 (2006.01) H01M 4/24 (2006.01) H01M 10/24 (2006.01) H01M 10/26 (2006.01)

Patent

CA 2456214

The invention relates to secondary alkaline electrochemical generators with a zinc anode in an electrolyte, the active mass of said anode comprising at least one conductive ceramic. According to the invention, the electrolyte of the generator is made up of a highly-concentrated alkaline solution and/or the active mass of the zinc anode contains an additive comprising at least one alkaline titanate having general formula M2OnTiO2mxH2O, wherein M denotes Li, Na, K, Rb or Cs, n being between 0.5 and 2, m being between 1 and 10 and x being between 0 and 10, or alkaline earth having general formula MOnTiO2mxH2O, wherein M denotes Mg, Ca, Sr or Ba, n being between 1 and 5, m being between 1 and 10 and x being between 0 and 10. The invention also relates to the zinc anode of the generators used in the invention and the production method thereof.

La présente invention concerne des générateurs électrochimiques secondaires alcalins ô anode de zinc dans un électrolyte, la masse active de l'anode comprenant au moins une céramique conductrice. Selon la présente invention, l'électrolyte du générateur est constitué d'une solution alcaline fortement concentrée et/ou la masse active de l'anode de zinc contient un additif constitué d'au moins un titanate alcalin de formule générale M2OnTiO2mxH2O dans laquelle M désigne Li, Na, K, Rb ou Cs, n étant compris entre 0,5 et 2, m étant compris entre 1 et 10 et x étant compris entre 0 et 10, ou alcalino- terreux de formule générale MOnTiO2mxH2O dans laquelle M désigne Mg, Ca, Sr ou Ba, n étant compris entre 1 et 5, m étant compris entre 1 et 10 et x étant compris entre 0 et 10. L'invention concerne également l'anode du zinc des générateurs selon l'invention ainsi que son procédé de fabrication.

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