Article: Lead acid-NiMH hybrid battery system using gel electrolyte

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TitleLead acid-NiMH hybrid battery system using gel electrolyte
AuthorsWeng, G
Li, VCY
Chan, KY
KeywordsEngineering
Electrical engineering
Chemical engineering
Issue Date2012
PublisherElectrochemical Society, Inc.. The Journal's web site is located at http://www.ecsdl.org/ECST/
CitationECS Transactions, 2012, v. 41 n. 13, p. 133-143 [How to Cite?]
DOI: http://dx.doi.org/10.1149/1.3691915
AbstractA hybrid battery system with gel electrolytes is proposed here to alleviate some limitations on conventional batteries, such as maintenance cost and acid stratification for the lead-acid battery, high self-discharge and short life cycles for high current discharge for nickel-metal hydride battery. This hybrid battery consists of a lead-acid positive electrode and a nickel-metal hydride negative electrode, operating in H2SO4-silica gel and KOH-potassium salt poly(acrylic acid) gel electrolytes via monopolar ion exchange membranes, respectively. The hybrid battery using gel electrolyte maintained stable discharge plateau at 2.27 V and longer discharge capacity than wet electrolyte system. This improved performance may be due to the gel electrolyte which can prevent acid stratification, reduce the corrosion rate of electrodes, and resolve the problem of salting-out in the central chamber for aqueous electrolyte system.
ISSN1938-6737
DOIhttp://dx.doi.org/10.1149/1.3691915
DC Field
Value
dc.contributor.authorWeng, G
dc.contributor.authorLi, VCY
dc.contributor.authorChan, KY
dc.date.accessioned2012-08-16T05:48:26Z
dc.date.available2012-08-16T05:48:26Z
dc.date.issued2012
dc.description.abstractA hybrid battery system with gel electrolytes is proposed here to alleviate some limitations on conventional batteries, such as maintenance cost and acid stratification for the lead-acid battery, high self-discharge and short life cycles for high current discharge for nickel-metal hydride battery. This hybrid battery consists of a lead-acid positive electrode and a nickel-metal hydride negative electrode, operating in H2SO4-silica gel and KOH-potassium salt poly(acrylic acid) gel electrolytes via monopolar ion exchange membranes, respectively. The hybrid battery using gel electrolyte maintained stable discharge plateau at 2.27 V and longer discharge capacity than wet electrolyte system. This improved performance may be due to the gel electrolyte which can prevent acid stratification, reduce the corrosion rate of electrodes, and resolve the problem of salting-out in the central chamber for aqueous electrolyte system.
dc.description.naturelink_to_OA_fulltext
dc.identifier.citationECS Transactions, 2012, v. 41 n. 13, p. 133-143 [How to Cite?]
DOI: http://dx.doi.org/10.1149/1.3691915
dc.identifier.doihttp://dx.doi.org/10.1149/1.3691915
dc.identifier.epage143
dc.identifier.hkuros203311
dc.identifier.issn1938-6737
dc.identifier.issue13
dc.identifier.spage133
dc.identifier.urihttp://hdl.handle.net/10722/159291
dc.identifier.volume41
dc.languageeng
dc.publisherElectrochemical Society, Inc.. The Journal's web site is located at http://www.ecsdl.org/ECST/
dc.publisher.placeUnited States
dc.relation.ispartofECS Transactions
dc.subjectEngineering
dc.subjectElectrical engineering
dc.subjectChemical engineering
dc.titleLead acid-NiMH hybrid battery system using gel electrolyte
dc.typeArticle