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AssigneeS.C.P.S. Societe de Conseil et de Prospective Scientifique S.A.
InventorsBernard Bugnet, Denis Doniat, Robert Rouget
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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.
Alkaline secondary electrochemical generators with zinc anodes, the active mass of the anode comprising at least one conducting ceramic material, characterised in that the electrolyte of the generator consists of a highly concentrated alkaline solution and/or the active mass of the zinc anode contains an additive consisting of at least one alkali metal titanate of the general formula M2OnTiO2mxH2O in which M denotes Li, Na, K, Rb or Cs, n is between 0.5 and 2, m is between 1 and 10 and x is between 0 and 10, or alkaline earth metal titanate of the general formula MOnTiO2mxH2O in which M denotes Mg, Ca, Sr or Ba, n is between 1 and 5, m is between 1 and 10 and x is between 0 and 10.
Alkaline secondary electrochemical generators with zinc anodes according to one of the preceding claims, characterised in that the active mass of the zinc anode contains bismuth or bismuth oxide.
Zinc anode for alkaline secondary electrochemical generators, the zinc oxide comprising at least one conducting ceramic material, characterised in that the active mass of the zinc anode contains an additive consisting of at least one alkali metal titanate of the general formula M2OnTiO2mxH2O in which M denotes Li, Na, K, Rb or Cs, n is between 0.5 and 2, m is between 1 and 10 and x is between 0 and 10, or alkaline earth metal titanate of the general formula MOnTiO2mxH2O in which M denotes Mg, Ca, Sr or Ba, n is between 1 and 5,. m is between 1 and 10 and x is between 0 and 10
Dependencies are inferred from the claim text.