ES347808A1 - Improvements in or relating to Dry Primary Cells - Google Patents

Improvements in or relating to Dry Primary Cells

Info

Publication number
ES347808A1
ES347808A1 ES347808A ES347808A ES347808A1 ES 347808 A1 ES347808 A1 ES 347808A1 ES 347808 A ES347808 A ES 347808A ES 347808 A ES347808 A ES 347808A ES 347808 A1 ES347808 A1 ES 347808A1
Authority
ES
Spain
Prior art keywords
mno
cell
depolarizer
particles
electrolyte
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES347808A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SAFT Societe des Accumulateurs Fixes et de Traction SA
Original Assignee
SAFT Societe des Accumulateurs Fixes et de Traction SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SAFT Societe des Accumulateurs Fixes et de Traction SA filed Critical SAFT Societe des Accumulateurs Fixes et de Traction SA
Publication of ES347808A1 publication Critical patent/ES347808A1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G45/00—Compounds of manganese
    • C01G45/02—Oxides; Hydroxides
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/04—Cells with aqueous electrolyte
    • H01M6/06—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid
    • H01M6/08—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid with cup-shaped electrodes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Hybrid Cells (AREA)
  • Primary Cells (AREA)

Abstract

A dry cell comprises a can-type anode, e.g. of zinc, a rod-like cathode disposed therein, e.g. of carbon, an electrolyte, a depolarizer mix around the cathode, and a separator between the depolarizer and the anode, the depolarizer mix being maintained in a state of compression and comprising particles of MnO 2 which have been heated in air in such a manner that the voltage of the cell is more constant during discharge than that of a similar cell using untreated MnO 2 . The MnO 2 particles may be prepared by heating rho or gamma MnO 2 particles in air at 250-450 C. a surface layer of beta MnO 2 is believed to be formed. The cell is made by making the can electrode and depolarizer body wider than is finally required, then reducing the diameter of the cell to the required value after assembling it. The electrolyte may be introduced subsequently.
ES347808A 1966-11-30 1967-11-30 Improvements in or relating to Dry Primary Cells Expired ES347808A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR85511A FR1509122A (en) 1966-11-30 1966-11-30 Improvements in the manufacture of manganese dioxide dry cells

Publications (1)

Publication Number Publication Date
ES347808A1 true ES347808A1 (en) 1969-02-16

Family

ID=8621760

Family Applications (1)

Application Number Title Priority Date Filing Date
ES347808A Expired ES347808A1 (en) 1966-11-30 1967-11-30 Improvements in or relating to Dry Primary Cells

Country Status (7)

Country Link
BE (1) BE706827A (en)
DE (1) DE1671908A1 (en)
ES (1) ES347808A1 (en)
FR (1) FR1509122A (en)
GB (1) GB1199426A (en)
LU (1) LU54945A1 (en)
NL (1) NL6716342A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4285122A (en) 1980-03-14 1981-08-25 Union Carbide Corporation Heat-treated, organic solvent-treated manganese dioxide
DE3242139C2 (en) * 1982-11-13 1984-09-06 Accumulatorenwerke Hoppecke Carl Zoellner & Sohn GmbH & Co KG, 5790 Brilon Process for the production of positive electrodes for electrochemical elements, in particular Li / Mn0 2 cells and electrodes produced by this process
FR2557734B1 (en) * 1983-12-28 1986-10-17 Gipelec PROCESS FOR THE PREPARATION OF A POSITIVE ACTIVE MATERIAL BASED ON MANGANESE DIOXIDE FOR AN ELECTROCHEMICAL GENERATOR, ACTIVE MATERIAL DERIVED FROM SAID METHOD AND GENERATOR USING THE SAME
US4948484A (en) * 1988-06-23 1990-08-14 Kerr-Mcgee Chemical Corporation Process for producing improved electrolytic manganese dioxide

Also Published As

Publication number Publication date
DE1671908A1 (en) 1971-10-21
GB1199426A (en) 1970-07-22
NL6716342A (en) 1968-05-31
FR1509122A (en) 1968-01-12
LU54945A1 (en) 1969-07-07
BE706827A (en) 1968-05-21

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