US1531618A - Porous copper pole for cells - Google Patents

Porous copper pole for cells Download PDF

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Publication number
US1531618A
US1531618A US644981A US64498123A US1531618A US 1531618 A US1531618 A US 1531618A US 644981 A US644981 A US 644981A US 64498123 A US64498123 A US 64498123A US 1531618 A US1531618 A US 1531618A
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US
United States
Prior art keywords
copper
cells
copper pole
porous copper
mercury
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 - Lifetime
Application number
US644981A
Inventor
Kotera Sakuji
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to US644981A priority Critical patent/US1531618A/en
Priority to GB15974/23A priority patent/GB206797A/en
Priority to FR567665D priority patent/FR567665A/en
Application granted granted Critical
Publication of US1531618A publication Critical patent/US1531618A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • H01M4/64—Carriers or collectors
    • H01M4/70—Carriers or collectors characterised by shape or form
    • H01M4/80—Porous plates, e.g. sintered carriers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • 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
    • H01M6/26—Cells without oxidising active material, e.g. Volta cells

Definitions

  • This invention relates to an improvement in copper poles for cells and especially to a porous copper pole obtained by a process in which mercury is added to copper powder produced by precipitation, to produce amalgamated copper, and thereafter the mixture is heated to evaporate the mercury.
  • the object of this invention is to provide a copper pole in which polarization is slow and consequently also the drops in the voltage and the current in a single fluid pri-' mary cell using such copper poles together with zinc poles, so that the cell is inexpensive and easy to handle.
  • scrapiron is previously added to a solution of copper sulphate in which precipitation occurs.
  • mercury is added to the resulting precipitate of copper, in the respective proportion of three to one by weight, to produce amalgamated copper.
  • This amalgamated copper is heated for approximately 3 hours at a temperature of approximately 600 (1., in an enclosed vessel having an exit for the mercury vapor. After evaporation of the mercury, there is left a brownish black colored mass having a specific gravity very much less than that of the ainalgae mated copper be'lore heating.
  • the mass is capable of absorbing considerable quantity of water when water is dropped onto the mass, and also shows the brilliant metallic color of copper upon polishing.
  • the density and quality of the product depend on the rate of mixture, and the temperature and duration of heating. Therefore, the rate of mixture should be altered in accordance with the particular requirements.
  • a primary cell comprising a copper pole made according to this invention, a zinc pole, and an electrolyte of a strong solution of an alkali hydrate, needs no depolarizer and has the characteristics of allowing longer continuous service and shorter recovering periods, than has any other cell, of which I am aware and also is very easy to operate.
  • the copper pole of my invention can be used very elfectively in secondary batteries.
  • a process for producing copper poles for cells comprismg, forming copper powder, mixing mercury with the copper powder, and heating the resulting mixture out of contact with air.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Description

Fatented Mar. 31, 1925.
PATENT OFFICE.
SAKUJI KOTERA, OF TOKYO, JAPAN.
POROUS COPPER POLE FOR CELLS.
N'o Drawing.
To all whom it away concern:
Be it known that I, SAKUJI Ko'rnnA, a subject of Emperor of Japan, and a resident of Tokyo, Empire of Japan, have invented a new and useful Improvement in Porous Copper Poles for Cells, of which the following is a specification.
This invention relates to an improvement in copper poles for cells and especially to a porous copper pole obtained by a process in which mercury is added to copper powder produced by precipitation, to produce amalgamated copper, and thereafter the mixture is heated to evaporate the mercury.
The object of this invention is to provide a copper pole in which polarization is slow and consequently also the drops in the voltage and the current in a single fluid pri-' mary cell using such copper poles together with zinc poles, so that the cell is inexpensive and easy to handle.
My invention will be more clearly understood by reference to the following description.
To make my improved copper pole, scrapiron is previously added to a solution of copper sulphate in which precipitation occurs. Then mercury is added to the resulting precipitate of copper, in the respective proportion of three to one by weight, to produce amalgamated copper. This amalgamated copper is heated for approximately 3 hours at a temperature of approximately 600 (1., in an enclosed vessel having an exit for the mercury vapor. After evaporation of the mercury, there is left a brownish black colored mass having a specific gravity very much less than that of the ainalgae mated copper be'lore heating.
The mass is capable of absorbing considerable quantity of water when water is dropped onto the mass, and also shows the brilliant metallic color of copper upon polishing.
Application filed June 12,
1923. Serial No. 644,981.
The density and quality of the product depend on the rate of mixture, and the temperature and duration of heating. Therefore, the rate of mixture should be altered in accordance with the particular requirements.
A primary cell comprising a copper pole made according to this invention, a zinc pole, and an electrolyte of a strong solution of an alkali hydrate, needs no depolarizer and has the characteristics of allowing longer continuous service and shorter recovering periods, than has any other cell, of which I am aware and also is very easy to operate.
The copper pole of my invention can be used very elfectively in secondary batteries.
Having now described and ascertained the nature of this invention, and in what manner the same is to be performed what I claim is 1. A process for producing copper poles for cells, comprismg, forming copper powder, mixing mercury with the copper powder, and heating the resulting mixture out of contact with air.
2. A process according to claim 1, the cop per powder being formed by precipitation.
3. A process according to claim 1, the mercury and copper being in the approximate proportion of 3 to 1 by weight, and the heating being performed at approximately 600 C. for approximatelythree hours.
4. A process according to claim 1, said heating being continued until all the mercury is driven off to leave copper only.
In testimony whereof I arl'iix my signature in presence of two witnesses.
SAKUJ l1 KO'llGRA. \Vitnesses GEUJI Kn hi ea 1m, 7 MA'rsu'zruo OTSUKA,
US644981A 1923-06-12 1923-06-12 Porous copper pole for cells Expired - Lifetime US1531618A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US644981A US1531618A (en) 1923-06-12 1923-06-12 Porous copper pole for cells
GB15974/23A GB206797A (en) 1923-06-12 1923-06-20 A new or improved electrode or pole for use in electric cells
FR567665D FR567665A (en) 1923-06-12 1923-06-20 Improvements to porous copper electrodes for batteries

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US644981A US1531618A (en) 1923-06-12 1923-06-12 Porous copper pole for cells

Publications (1)

Publication Number Publication Date
US1531618A true US1531618A (en) 1925-03-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
US644981A Expired - Lifetime US1531618A (en) 1923-06-12 1923-06-12 Porous copper pole for cells

Country Status (3)

Country Link
US (1) US1531618A (en)
FR (1) FR567665A (en)
GB (1) GB206797A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2554125A (en) * 1946-01-19 1951-05-22 Accumulateurs Fixes Negative plate for alkaline accumulator and method of making same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2979392A (en) * 1957-12-12 1961-04-11 Lor Corp Foaming of granulated metal
NL127306C (en) * 1964-05-26 1969-10-15

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2554125A (en) * 1946-01-19 1951-05-22 Accumulateurs Fixes Negative plate for alkaline accumulator and method of making same

Also Published As

Publication number Publication date
GB206797A (en) 1923-11-15
FR567665A (en) 1924-03-07

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