The ionic conductivity behavior of poly(ethylene oxide) complexed with lithium salts was investigated using an a.c. impedance technique. The composition range of the salt was from 0.01 to 0.5 mole fraction. The result showed that anions strongly influence the conductivity behavior of the polymer electrolyte. A simple model is proposed whereby the conductivity decrease at higher salt concentration is due to ion-pair formation. This results in an increase in the activation energy with increasing salt concentration and a reduction in the ionic mobility of Li+ ions.
机构:
Univ Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94720 USA
Lawrence Berkeley Natl Lab, Mat Sci Div, Berkeley, CA USA
Lawrence Berkeley Natl Lab, Joint Ctr Energy Storage Res JCESR, Berkeley, CA 94720 USAUniv Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94720 USA
Hoffman, Zach J.
Shah, Deep B.
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机构:
Univ Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94720 USA
Lawrence Berkeley Natl Lab, Mat Sci Div, Berkeley, CA USA
Lawrence Berkeley Natl Lab, Joint Ctr Energy Storage Res JCESR, Berkeley, CA 94720 USAUniv Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94720 USA
Shah, Deep B.
Balsara, Nitash P.
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机构:
Univ Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94720 USA
Lawrence Berkeley Natl Lab, Mat Sci Div, Berkeley, CA USA
Lawrence Berkeley Natl Lab, Joint Ctr Energy Storage Res JCESR, Berkeley, CA 94720 USAUniv Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94720 USA