AT67422B - Galvanic element, whose depolarization mass consists of an intimate mixture of a manganese-oxygen compound with graphite. - Google Patents

Galvanic element, whose depolarization mass consists of an intimate mixture of a manganese-oxygen compound with graphite.

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Publication number
AT67422B
AT67422B AT67422DA AT67422B AT 67422 B AT67422 B AT 67422B AT 67422D A AT67422D A AT 67422DA AT 67422 B AT67422 B AT 67422B
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Austria
Prior art keywords
manganese
graphite
oxygen compound
whose
intimate mixture
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German (de)
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Ever Ready Metallindustrie Ges
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Application filed by Ever Ready Metallindustrie Ges filed Critical Ever Ready Metallindustrie Ges
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Publication of AT67422B publication Critical patent/AT67422B/en

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Description

  

   <Desc/Clms Page number 1> 
 



    Gaivanisches Element, dessen Depolarisationemasse aus einem lnnigen Gemenge einer Mangansauersto1fverbindung mit Graphit besteht.   



   Vorliegende Erfindung betrifft ein galvanisches Element, welches sich durch hohe Leistung bei geringem Gewicht und einer bisher nicht erreichten langen Haltbarkeit auszeichnet. Diese Eigenschaften werden dadurch erzielt, dass die depolarisierend wirkende Substanz nicht wie bisher üblich aus einem gewöhnlichen Superoxyd, z. B. Braunstein, oder aus einem geeigneten Sulfat, Chlorid oder dgl. sondern aus dem elektrisch sehr leitfähigen,   dunkelbraunen Mangani-   
 EMI1.1 
 besteht. 



   Wenn man dieses, ein leichtes dunkelbraunes Pulver, innig mit fein gepulverter Kohle (Graphit) vermengt und in üblicher Weise in einer porösen Hülle mit fester Kohle, Zink gegen- über, in Ammoniumnitrat- oder Ammoniumchloridlösung oder dgl. als Depolarisationselektrode verwendet, so erhält man ein Element, dessen Erholungsfähigkeit grösser ist als bei dem   éclanche-   Element. 



   Wie erwähnt, ist es jedoch erforderlich, das dunkelbraune Manganihydrat zu verwenden, da nur dieses die angegebene vorzügliche Wirkung besitzt. Dagegen kommt das helle (gelbe) Manganihydrat, so wie es durch Ausfällen aus   Lösungen   unmittelbar erhalten wird, wegen seiner schlechten Leitfähigkeit nicht in Betracht. 



   Das in Elementen direkt wirksame dunkelbraune Manganoxydhydrat wird beispielsweise dadurch erzeugt, dass man   Manganlauge   mit Natronlauge versetzt und den so erhaltenen Niederschlag an   sauerstuffreicher   Luft sich dunkelbraun färben   lässt   oder aber, um schneller das für ein Element notwendige dunkelbraune Manganoxydhydrat zu erhalten, das auf vorgenannte 
 EMI1.2 
 Flüssigkeit, z. B.   Natrìumhypochlorid bringt.   Auf diese Weise entsteht rasch ein dunkelbraune   Manganoxydhydrat,   das ebenfalls nur etwa ein Drittel des spezifischen Gewichtes von Braunstein hat. 



   Ebensowenig kommt hier das schwarzgraue Mangansuperoxydhydrat in Betracht, wie solches z. B. in der deutschen Patentschrift Nr. 144397 vorgeschlagen ist, weil auch dieses Material, wie   infgenannter Patentschrift ermähnt,   ein Nichtleiter ist und daher keine guten Resultate ergibt. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



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    Gaivanic element whose depolarization mass consists of an internal mixture of a manganese-oxygen compound with graphite.



   The present invention relates to a galvanic element which is characterized by high performance with low weight and a long service life not previously achieved. These properties are achieved in that the depolarizing substance is not made from a common superoxide, e.g. B. brownstone, or from a suitable sulfate, chloride or the like. But from the electrically very conductive, dark brown manganese
 EMI1.1
 consists.



   If this, a light, dark brown powder, is intimately mixed with finely powdered charcoal (graphite) and used as a depolarization electrode in the usual way in a porous shell with solid charcoal, zinc, in ammonium nitrate or ammonium chloride solution or the like an element whose recovery capacity is greater than that of the éclanche element.



   As mentioned, however, it is necessary to use the dark brown manganese hydrate, since only this has the stated excellent effect. On the other hand, the light (yellow) manganese hydrate, as it is obtained directly by precipitation from solutions, cannot be considered because of its poor conductivity.



   The dark brown manganese oxide hydrate, which is directly effective in elements, is produced, for example, by adding sodium hydroxide solution to manganese liquor and letting the resulting precipitate turn dark brown in oxygen-rich air or, in order to obtain the dark brown manganese oxide hydrate required for an element more quickly, the aforementioned
 EMI1.2
 Liquid, e.g. B. brings sodium hypochlorite. In this way, a dark brown manganese oxide hydrate quickly develops, which also has only about a third of the specific weight of manganese dioxide.



   Just as little is the black-gray manganese superoxide hydrate into consideration, as such z. B. is proposed in German Patent No. 144397, because this material, as the aforementioned patent warns, is a non-conductor and therefore does not give good results.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-ANSPRUCH : Galvanisches Element, dessen Depolarisationsmasse aus einem innigen Gemenge einer Mangansauerstossvcrbindung mit Graphit besteht, gekennzeichnet durch die Verwendung von dunkelbraunem Manganihydroxyd entsprechend der Formel Mn (OJT) . **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Galvanic element, the depolarization mass of which consists of an intimate mixture of a manganese-oxygen compound with graphite, characterized by the use of dark brown manganese hydroxide according to the formula Mn (OJT). ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT67422D 1910-01-04 1910-12-31 Galvanic element, whose depolarization mass consists of an intimate mixture of a manganese-oxygen compound with graphite. AT67422B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE67422X 1910-01-04

Publications (1)

Publication Number Publication Date
AT67422B true AT67422B (en) 1915-01-11

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ID=5633876

Family Applications (1)

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AT67422D AT67422B (en) 1910-01-04 1910-12-31 Galvanic element, whose depolarization mass consists of an intimate mixture of a manganese-oxygen compound with graphite.

Country Status (1)

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AT (1) AT67422B (en)

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