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Choi, Nam-Soon
Energy Materials Lab
Research Interests
  • Rechargeable lithium battery, electrolytes for next generation Mg and Na battery

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Quasi-solid-state electric double layer capacitors assembled with sulfonated poly(fluorenyl ether nitrile oxynaphthalate) membranes

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Title
Quasi-solid-state electric double layer capacitors assembled with sulfonated poly(fluorenyl ether nitrile oxynaphthalate) membranes
Author
Seong, Yul-HwanChoi, Nam-SoonKim, Dong-Won
Keywords
Activated carbon electrode; Charge-discharge cycle tests; Cycling performance; Degree of sulfonation; Electric double layer capacitor; Electrochemical characteristics; Fluorenyl; Holding capacity; Interfacial contact; Molar ratio; Polymer electrolyte; Proton exchange membrane
Issue Date
201112
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
ELECTROCHIMICA ACTA, v.58, no., pp.285 - 289
Abstract
A series of sulfonated poly(fluorenyl ether nitrile oxynaphthalate) (SPFENO) copolymers with different degrees of sulfonation were synthesized. Their degree of sulfonation was controlled by adjusting the molar ratio of the reactants. The polymer electrolytes prepared with a SPFENO membrane exhibited high ionic conductivities and solution holding capacity, which depended on the degree of sulfonation. The quasi-solid-state electric double layer capacitors (EDLCs) consisted of activated carbon electrodes and polymer electrolytes were assembled, and their electrochemical characteristics were studied by cyclic voltammetry and charge-discharge cycle tests. A SPFENO membrane with proper degree of sulfonation was effective for maintaining high ionic conductivity and keeping good electrode-electrolyte interfacial contact during cycling, which resulted in good cycling performance of the EDLC.
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DOI
http://dx.doi.org/10.1016/j.electacta.2011.09.061
ISSN
0013-4686
Appears in Collections:
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