GB994652A - Artificial pyrolusite and its use in batteries - Google Patents

Artificial pyrolusite and its use in batteries

Info

Publication number
GB994652A
GB994652A GB31755/62A GB3175562A GB994652A GB 994652 A GB994652 A GB 994652A GB 31755/62 A GB31755/62 A GB 31755/62A GB 3175562 A GB3175562 A GB 3175562A GB 994652 A GB994652 A GB 994652A
Authority
GB
United Kingdom
Prior art keywords
pyrolusite
water content
oxidizing
treated
artificial
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
GB31755/62A
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.)
Knapsack AG
Knapsack Griesheim AG
Original Assignee
Knapsack AG
Knapsack Griesheim 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 Knapsack AG, Knapsack Griesheim AG filed Critical Knapsack AG
Publication of GB994652A publication Critical patent/GB994652A/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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/10—Solid density
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/12—Surface area
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/40—Electric properties
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity
    • 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)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

Artificial pyrolusites, i.e. those obtained by precipitation from a manganese salt solution by means of an oxidizing or reducing agent, especially suitable for use in the construction of Leclanche cells, are dehydrated to a water content of 15 to 35%, preferably 20 to 23%, while being continuously mixed and/or divided, as e.g. in a drum drier and preferably with a grinding agent, at a temperature not exceeding 150 DEG C. and preferably above 65 DEG C. The dehydration may be effected under subatmospheric pressures and lower temperatures. In a modification of the process, a pyrolusite which had its water content reduced to less than 15% may be steam-treated or water vapour-treated to obtain the product containing 15 to 35% water. A preferred starting material is obtained by oxidizing at pH 5 to 9, an aqueous solution of a bivalent manganese salt with chlorine or hypochlorite. The product of the invention may be admixed with natural or electrolytic pyrolusite. In the example, which includes for comparison static dehydration of pyrolusite in an oven on trays to an identical water content, use is made of a rotary drum drier charged with porcelain balls. Specification 939,240 is referred to.
GB31755/62A 1961-08-19 1962-08-17 Artificial pyrolusite and its use in batteries Expired GB994652A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEK0044532 1961-08-19
DEK0044714 1961-09-14

Publications (1)

Publication Number Publication Date
GB994652A true GB994652A (en) 1965-06-10

Family

ID=25983438

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31755/62A Expired GB994652A (en) 1961-08-19 1962-08-17 Artificial pyrolusite and its use in batteries

Country Status (2)

Country Link
DK (1) DK107417C (en)
GB (1) GB994652A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111892091A (en) * 2020-08-27 2020-11-06 湖南特种金属材料有限责任公司 Preparation method of trimanganese tetroxide for drilling mud

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111892091A (en) * 2020-08-27 2020-11-06 湖南特种金属材料有限责任公司 Preparation method of trimanganese tetroxide for drilling mud
CN111892091B (en) * 2020-08-27 2023-04-07 湖南特种金属材料有限责任公司 Preparation method of mangano-manganic oxide for drilling mud

Also Published As

Publication number Publication date
DK107417C (en) 1967-05-29

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