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http://dx.doi.org/10.4313/JKEM.2004.17.10.1079

Electric and Mechanical Properties of CMC+PTFE Binary Binder Electrode for Electric Double Layer Capacitor  

Kim, Ick-Jun (한국전기연구원 전지연구그룹)
Lee, Sun-Young (한국전기연구원 전지연구그룹)
Moon, Seong-In (한국전기연구원 전지연구그룹)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.17, no.10, 2004 , pp. 1079-1084 More about this Journal
Abstract
This work describes the effect of electrode binder on the characteristics of electric double layer capacitor. Among carboxymethylcellulose (CMC), Polyvinylpyrrolidone (PVP), Polyvinyl Alcohol (PVA), and Polyvinylidene Fluoride (PVDF), the unit cell using CMC showed good rate capability at current densities between 2.5 mA/$\textrm{cm}^2$～100 mA/$\textrm{cm}^2$. However, CMC as a binder is incongruent, because the electrode bound with CMC is rigid and easy to crack during a press and winding process for fabrication of capacitor. The unit cell capacitor using the electrode bound with binary binder composed of CMC and Polytetrafluoroethylene (PTFE), especially in composition CMC : PTFE =60 : 40 wt.%, has exhibited the better mechanical properties than those of the unit cell with CMC. On the other hand, the mechanical properties of CMC+PTFE electrode, coated on underlayer composed of CMC and carbon black, were much improved.
Keywords
EDLC; Binder; Specific capacitance; Resistivity; Conductive adhesive; Bending test;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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