The synergistic effect of nitrile and ether functionalities for gel electrolytes used in supercapacitors

Mei Fang Hsueh, Cheng Wei Huang, Ching An Wu, Ping Lin Kuo, Hsisheng Teng

研究成果: Article同行評審

32 引文 斯高帕斯(Scopus)

摘要

This study examines the linear triblock copolymer design of poly(acrylonitrile)-b-poly(ethylene glycol)-b-poly(acrylonitrile) (PAN-b-PEG-b-PAN) for a gel polymer electrolyte (GPE) swollen with dimethylformamide dissolving LiClO4. The study demonstrates the synergistic effect of the nitrile and ether functionalities in facilitating ion transport in the carbon films of electric double-layer capacitors (EDLCs). A GPE with a tuned AN/EG ratio exhibits ionic conductivity at approximately 10 -2 S cm-1. The linear configuration incorporates the GPE border into the carbon electrodes. The PAN chain promotes ion solvation and transport into the carbon interior, and the PEG chain coordinates the solvent molecules to form ion motion channels. The synergistic effect of the PAN and PEG blocks enables a GPE EDLC delivering more energy and power than EDLCs with a liquid-phase electrolyte. The GPE EDLC delivers 20 Wh kg-1 (approximately 10 Wh L-1) at a high power of 10 kW kg-1 (approximately 5 kW L-1) when using a high-porosity carbon electrode derived from mesophase pitch activation.

原文English
頁(從 - 到)16751-16758
頁數8
期刊Journal of Physical Chemistry C
117
發行號33
DOIs
出版狀態Published - 2013 8月 22

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 能源(全部)
  • 物理與理論化學
  • 表面、塗料和薄膜

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