The development of a reactor for the manufacture of zinc electrodes for a silver oxide-zinc battery

dc.contributor.advisorLorenzen, L.
dc.contributor.authorHoltzhausen, David Jacobus
dc.contributor.otherStellenbosch University. Faculty of Engineering. Dept. of Process Engineering.en_ZA
dc.date.accessioned2012-08-27T11:34:46Z
dc.date.available2012-08-27T11:34:46Z
dc.date.issued2000-12
dc.descriptionDissertation (PhD)--University of Stellenbosch, 2000.en_ZA
dc.description.abstractENGLISH ABSTRACT: Silver/Zinc batteries are extensively used for applications where a power source with a high energy density is needed. A reactor was developed to manufacture the zinc electrodes for these batteries. The parameters for the control of this reactor were identified. The interaction and relationships between the set of parameters were established and quantified. The novel design of the reactor includes features such as continuous replenishment of the constituting chemicals, parallel flow of the plating fluid, inert anodes and a serial electrical layout. The controlling parameters consist of both chemical and physical parameters. They are - zincate concentration, hydroxyl concentration, density, temperature, flow rate of the plating fluid, and current density. The unique solubility characteristics of zinc oxide in potassium hydroxide lend themselves to a novel approach for the determination of the zincate concentration inĀ· the plating solution. A set of conditions for the manufacturing of electrodes, with the required characteristics, was identified. The requirements are densely packed zinc dendrite morphology with high porosity and mechanical stability. The designed reactor complies with the industries safety requirements. The batteries were successfully applied in their operational domain (torpedoes) after this extensive research project was completed.en_ZA
dc.description.abstractAFRIKAANSE OPSOMMING: Silwer/Sink batterye word intensief aangewend in gebruike waar 'n kragbron met hoĆ« energie digtheid benodig word. 'n Reaktor is ontwikkel wat die sink elektrodes van die tipes batterye vervaardig. Die veranderlikes vir die beheer van die reaktor is bepaal. Die interaksie en verwantskap tussen die stel veranderlikes is verkry en gekwantifiseer. Die unieke ontwerp van die reaktor het die volgende karakteristieke, nl. aaneenlopende vervanging van die chemikaliĆ« verbruik, parallelle vloei van die plateringsvloeistof, inerte anodes en elektriese uitleg in serie. Die chemiese en fisiese veranderlikes is beide beherende veranderlikes. Hierdie fisiese en chemiese veranderlikes wat die proses beheer is die sinkaat konsentrasie, hidroksiel konsentrasie, digtheid, temperatuur, vloeitempo van die plateringsvloeistof en die stroomdigtheid. Die unieke oplossingskarakteristieke van sinkoksied in kalsiumĀ· hidroksied leen hom tot die unieke proses om die sinkaat konsentrasie in die plateringsvloeistof te bepaal. 'n Steloperasionele kondisies vir die vervaardiging van die elektrodes met die spesifieke spesifikasies soos verlang, is geĆÆdentifiseer. Hierdie kondisies is die diggepakte sinkdendriet morfologie met 'n hoĆ« porositeit en meganiese stabiliteit. Die ontwerpte reaktor voldoen aan die industriĆ«le veiligheidsvereistes en die ergonomiese maatstawwe. Die batterye is suksesvol gebruik in hulle industriĆ«le aanwending as gevolg van die suksesvolle afhandeling van die stuk navorsing.af_ZA
dc.format.extent114 p. : ill.
dc.identifier.urihttp://hdl.handle.net/10019.1/51958
dc.language.isoen_ZAen_ZA
dc.publisherStellenbosch : Stellenbosch Universityen_ZA
dc.rights.holderStellenbosch Universityen_ZA
dc.subjectChemical reactorsen_ZA
dc.subjectElectrodes, Zincen_ZA
dc.subjectZinc -- Metallurgyen_ZA
dc.subjectElectrochemistryen_ZA
dc.subjectManufacturing processesen_ZA
dc.subjectDissertations -- Metallurgical engineeringen_ZA
dc.subjectTheses -- Metallurgical engineeringen_ZA
dc.titleThe development of a reactor for the manufacture of zinc electrodes for a silver oxide-zinc batteryen_ZA
dc.typeThesisen_ZA
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