GB500806A - Process for the production of depolarising compositions from pyrolusite - Google Patents

Process for the production of depolarising compositions from pyrolusite

Info

Publication number
GB500806A
GB500806A GB22932/37A GB2293237A GB500806A GB 500806 A GB500806 A GB 500806A GB 22932/37 A GB22932/37 A GB 22932/37A GB 2293237 A GB2293237 A GB 2293237A GB 500806 A GB500806 A GB 500806A
Authority
GB
United Kingdom
Prior art keywords
pyrolusite
hydrated
alkali metal
ammonium
depolarizing
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
GB22932/37A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Publication of GB500806A publication Critical patent/GB500806A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

500,806. Batteries. I. G. FARBENINDUSTRIE AKT.-GES. Aug. 20, 1937, Nos. 22932 and 22933. Convention dates, Oct. 15, 1936 and Oct. 24, 1936. [Class 63] [Also in Group III] Improved depolarizing compositions are obtained from native pyrolusite which has been hydrated by a treatment with an alkaline aqueous solution of an alkali metal. or ammonium compound such as hydroxide, carbonate, or bicarbonate ; by treating it with a dilute acid or a solution of an acid salt to convert adsorbed alkali or ammonium compounds into easily soluble salts which are removed as by washing. In a modification such hydrated pyrolusite containing adsorbed alkali metal compounds is treated with a solution of an ammonium salt at elevated temperature and the product leached to remove the easily soluble alkali metal salt formed. Tho first process increases the content of water of hydration in the - hydrated pyrolusite and improves its depolarizing efficiency. The second process also leads to improved depolarizing efficiency but without increase in the content of water of hydration ; in addition the storage properties of the production improved. As dilute acids, hydrochloric and chromic acids may be used and as ammonium salts, the chloride or sulphates. Examples of operation arc given. The Specification as open to inspection under Sect. 91 comprises also the following subjectmatter : Hydrated manganese dioxide of any origin containing adsorbed alkali metal or ammonium compounds may be treated by the process of the invention; and the amount of acid or acid salt used for treatment is approximately sufficient to neutralise the adsorbed compounds. This subject-matter does not appear in the Specification as accepted.
GB22932/37A 1936-10-15 1937-08-20 Process for the production of depolarising compositions from pyrolusite Expired GB500806A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE500806X 1936-10-15

Publications (1)

Publication Number Publication Date
GB500806A true GB500806A (en) 1939-02-16

Family

ID=6545673

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22932/37A Expired GB500806A (en) 1936-10-15 1937-08-20 Process for the production of depolarising compositions from pyrolusite

Country Status (1)

Country Link
GB (1) GB500806A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2716078A (en) * 1953-03-24 1955-08-23 Olin Mathieson Method for treating activated manganese dioxide
US4277360A (en) 1979-03-28 1981-07-07 Union Carbide Corporation Manganese dioxide

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2716078A (en) * 1953-03-24 1955-08-23 Olin Mathieson Method for treating activated manganese dioxide
US4277360A (en) 1979-03-28 1981-07-07 Union Carbide Corporation Manganese dioxide

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