DE899215C - Electrode for alkaline batteries - Google Patents

Electrode for alkaline batteries

Info

Publication number
DE899215C
DE899215C DEA14377A DEA0014377A DE899215C DE 899215 C DE899215 C DE 899215C DE A14377 A DEA14377 A DE A14377A DE A0014377 A DEA0014377 A DE A0014377A DE 899215 C DE899215 C DE 899215C
Authority
DE
Germany
Prior art keywords
electrode
carrier
electroplating
alkaline batteries
sintered body
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
DEA14377A
Other languages
German (de)
Inventor
Paul Hagspihl
Dr Rer Nat Freimut Peters
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.)
Accumulatoren Fabrik AG
Original Assignee
Accumulatoren Fabrik 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 Accumulatoren Fabrik AG filed Critical Accumulatoren Fabrik AG
Priority to DEA14377A priority Critical patent/DE899215C/en
Application granted granted Critical
Publication of DE899215C publication Critical patent/DE899215C/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
    • H01M4/64—Carriers or collectors
    • H01M4/70—Carriers or collectors characterised by shape or form
    • H01M4/80—Porous plates, e.g. sintered carriers
    • 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)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Cell Electrode Carriers And Collectors (AREA)

Description

Elektrode für alkalische .Akkumulatoren Man hat bereits vorgeschlagen, zur Verbesserung der Haftfestigkeit des porösen Sinterkörpers vor dem Galvanisieren des Trägers auf diesen ein pulverförmiges Metall aufzusintern, um damit die Oberfläche aufzurauheri. Mit der Aufrauhung wird angestrebt, eine unebene, durch Sinterung aktive Oberfläche des Trägers zu erhalten, mit der .sich der poröse Sinterkörper gut verbindet. Der dadurch geschaffene feste Kontakt mit dem Träger verbessert die mechanischen und die elektrischen Eigenschaften der Elektrode.Electrode for alkaline batteries. It has already been proposed that to improve the adhesive strength of the porous sintered body before electroplating of the carrier to sinter a powdery metal on them in order to create the surface to roughen up The aim with the roughening is to create an uneven surface by sintering To obtain active surface of the carrier, with the .sich the porous sintered body connects well. The firm contact that this creates with the wearer improves the mechanical and electrical properties of the electrode.

Die nach dem Aufsintern des Metallpulvers vorgenommene Galvanisierung des Trägers bedingt unter Umständen einte teilweise nicht erwünschte Einebnung der Aufrauhung.The electroplating carried out after the metal powder has been sintered on of the carrier may cause a partially undesirable leveling of the Roughening.

Blei der Elektrode nach der Erfindung wird dieser Nachteil dadurch vermieden, daß der Träger, gleich welcher Form, ohne nachfolgende Galvanisierung oberflächlich aufgerauht ist, wodurch eine aktive Oberflächenschicht entsteht, mit der sich der poröse Sintlerkörper der Elektrode bei dem üblichen Sinterprozeß fest verbindet. Dies kann z. B. durch Aufspritzen einer ,Metallschicht nach einem der üblichen Metallspritzverfahren oder durch Aufsintern von Metallpulverteilchen oder durch oberflächliche Oxydation und anschließende Reduktion erfolgen. Erfindungsgemäß kann aber auch der Träger nach einer vorhergehenden Galvanisierung oberflächlich aufgerauht werden. Bei Aufrauhung ohne nachfolgende Galvanisierung oder nach dem Galvanisieren befindet sich das Metallpulver des Sinterkörpers in einem besseren Kontakt mit einer unebenen, rauh°n und daher durch Sinterung aktiven Oberfläche, mit der es, sich dann bei der üblichen Sinterbehandlung unlösbar verbinden kann.Lead of the electrode according to the invention eliminates this disadvantage avoided that the carrier, whatever shape, without subsequent electroplating is roughened on the surface, creating an active surface layer, with which the porous sintered body of the electrode is fixed in the usual sintering process connects. This can e.g. B. by spraying a, metal layer according to one of the conventional metal spraying processes or by sintering on metal powder particles or by superficial oxidation and subsequent reduction. According to the invention but the carrier can also be superficial after a previous electroplating be roughened. In the case of roughening without subsequent electroplating or after Electroplating is the metal powder of the sintered body in a better Contact with an uneven, rough and therefore active surface due to sintering, with which it can then be inextricably linked during the usual sintering treatment.

Claims (1)

PATENTANSPRUCH: Elektrode für alkalische Akkumulatoren mit einem auf dem Träger aufgesinterten, als Masseträger dienenden porösen Sinterkörper, dadurch gekennzeichnet, daß der Träger, gleich welcher Form, ohne nachfolgende,Galvanisierung; gege- benenfalls nach einer vorhergehenden Galvanisierung, oberflächlich aufgerauht ist.PATENT CLAIM: Electrode for alkaline accumulators with a porous sintered body sintered on the carrier and serving as a mass carrier, characterized in that the carrier, regardless of shape, without subsequent electroplating; if necessary after a previous electroplating, the surface is roughened.
DEA14377A 1951-11-10 1951-11-10 Electrode for alkaline batteries Expired DE899215C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA14377A DE899215C (en) 1951-11-10 1951-11-10 Electrode for alkaline batteries

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA14377A DE899215C (en) 1951-11-10 1951-11-10 Electrode for alkaline batteries

Publications (1)

Publication Number Publication Date
DE899215C true DE899215C (en) 1953-12-10

Family

ID=6923164

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA14377A Expired DE899215C (en) 1951-11-10 1951-11-10 Electrode for alkaline batteries

Country Status (1)

Country Link
DE (1) DE899215C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1143876B (en) * 1955-03-11 1963-02-21 Svenska Ackumulator Ab Alkaline silver-zinc accumulator cell

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1143876B (en) * 1955-03-11 1963-02-21 Svenska Ackumulator Ab Alkaline silver-zinc accumulator cell

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