GB1340914A - Lead dioxide battery plates - Google Patents

Lead dioxide battery plates

Info

Publication number
GB1340914A
GB1340914A GB1340914DA GB1340914A GB 1340914 A GB1340914 A GB 1340914A GB 1340914D A GB1340914D A GB 1340914DA GB 1340914 A GB1340914 A GB 1340914A
Authority
GB
United Kingdom
Prior art keywords
pbo
electro
state
stress
deposited
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
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.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
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 UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Publication of GB1340914A publication Critical patent/GB1340914A/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Cell Electrode Carriers And Collectors (AREA)

Abstract

1340914 Electro-depositing lead dioxide DEFENCE SECRETARY OF STATE FOR 10 Feb 1972 [12 Feb 1971] 4527/71 Heading C7B [ Also in Division H1] A PbO 2 battery plate material comprises a metal substrate e. g. of Ni and an adhering PbO 2 coating electro-deposited thereon in a state of internal mechanical stress in excess of 5 tons per square inch of cross-sectional area of coating. The PbO 2 may be electro-deposited in a state of stress from a Pb(NO 3 ) 2 solution, e.g. containing stress-increasing organic compounds or having a pH between 3À6 and 4À0 with anodic C.D. between 5 and 100 ASF, or the state of stress may be induced after PbO 2 electro-deposition, e.g. by mechanical deformation,heating to up to 350‹C and allowing to cool, or anodic treatment in a solution of lead acetate and NaNO 3 . The substrate may be degreased then anodically etched at 270 A/m 2 in 30% w/w H 2 SO 4 solution at 50‹C for 15 minutes to increase adhesion of the PbO 2 deposit. During electro-deposition of PbO 2 on the anode substrate, Pb is deposited at the cathode e.g. of carbon; nitric acid produced is neutralized with litharge (PbO) to regenerate Pb(NO 3 ) 2 during recirculation of electrolyte.
GB1340914D 1971-02-12 1971-02-12 Lead dioxide battery plates Expired GB1340914A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB452771 1971-02-12

Publications (1)

Publication Number Publication Date
GB1340914A true GB1340914A (en) 1973-12-19

Family

ID=9778888

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1340914D Expired GB1340914A (en) 1971-02-12 1971-02-12 Lead dioxide battery plates

Country Status (1)

Country Link
GB (1) GB1340914A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2571549A1 (en) * 1984-10-10 1986-04-11 Diafred Lead accumulator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2571549A1 (en) * 1984-10-10 1986-04-11 Diafred Lead accumulator

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years