Document Details

Document Type : Article In Journal 
Document Title :
Property of Interface at Lithium Anode in Contact with Network Polyether Free- Chain End
ممتلكات واجهة في الأنود ليثيوم في الاتصال مع شبكة الحرة نهاية سلسلة بولي
 
Subject : Property of Interface at Lithium Anode in Contact with Network Polyether Free- Chain End 
Document Language : English 
Abstract : The network polymer electrolytes having various numbers of free-chain ends were critically photo-cross linked in the presence of two lithium salts namely; lithium bis(trifluorornethylsulfonyl)imid.e (LiTFSI) and lithium tetrafluoroborate (LiBF4) have been critically investigated. Polymer net-work composed of mixtures of mono-acrylated (MA) and tri-acrylated (TA) copolymers of ethylene oxide and propylene oxide and the number of free-chain ends are controlled by the MA composition. The influence of the free-chain ends on the thermal property, ionic conductivity and interfacial characteristics at the lithium electrode has been discussed. In terms of thermal stability, two different types of lithium salts have been used properly to explore various contributions at electrolyte/lithium anode interface. The data revealed that, the salt LiTFSI is more stable than LiBF4. The dependence of the salt concentration for the inverse of interfacial resistance (RO, corresponding to the exchange current showed direct relationship. The R1 values of the polymer electrolyte containing LiTFSI decreased on increasing the number of free-chain ends, indicating that the dissolution!deposition process is directly accelerated by ion/polymer cooperative motion. In the LiBF4/polyrner mixtures at the lithium electrode interface are considered to be restrained due to the salt instability and the formation of solid electrolyte passivation layer. 
ISSN : 1319-6103 
Journal Name : Journal of Saudi Chemical Societyl 
Volume : 12 
Issue Number : 1 
Publishing Year : 1429 AH
2008 AD 
Article Type : Article 
Added Date : Monday, February 18, 2013 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
اقبال محمد اسماعيلismail, iqbal MohammedResearcherDoctorateiismail@kau.edu.sa

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