- P-ISSN 1225-0163
- E-ISSN 2288-8985
- P-ISSN1225-0163
- E-ISSN2288-8985
- SCOPUS, ESCI, KCI
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Electrochemical Properties of Core-Shell Polyolefin Neonwoven Fabric Modified with Sulfonic Acid Group
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2004, v.17 no.1, pp.60-68
Yu-Ping,
Z.
, &
(2004). Electrochemical Properties of Core-Shell Polyolefin Neonwoven Fabric Modified with Sulfonic Acid Group. Analytical Science and Technology, 17(1), 60-68.
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Abstract
The core-shell polyolefin nonwovon fabric (PNF), wherein the PNF comprises at least about 60% of polyethylene having a melting temperature at ~132 ℃ and no more than about 40% of second polypropylene having a lower melting temperature at ~162 ℃. The sulfonic acid group for battery separators were prepared by radiation-induced grafting of styrene onto PNF and by the subsequent sulfonation of polystyrene graft chains. The sulfonated PNF was characterized by XPS, SEM, DSC, TGA and porosimeter. The electrochemical properties such as electrolyte retension, electrical resistance, and transport number of the K+ions were evaluated after sulfonation. It was found that the electrolyte retension increased, whereas the electrical resistance decreased with increasing sulfonic acid content. The transport number of K+ in PNF with sulfonic acid of 0.22 ~ 3.60 mmol/g was to be 0.90 ~ 0.93.
- keywords
- polyolefin nonwoven fabric, sulfonation, battery separator, padiation-induced grafting, styrene, electrical resistance, transport number
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