Articles
  • Electrochemical properties of lithium/sulfur-polyacrylonitrile-carbon nanotube composite cells using ether-based electrolyte at high rate
  • Changhyeon Kima, Qing Wanga, N. Subba Reddya, Huihoon Kima, Gyu-Bong Choa, Jou-Hyeon Ahna, Ki-Won Kima, Ho-suk Ryub, Youngchul Kimc, Sun-hwa Yeond and Hyo-Jun Ahna,*
  • a Dept. of Materials Engineering and Convergence Technology, Gyeongsang National University, Jinju, Korea b Dept. of Materials & Energy Engineering, Kyungwoon University, Gumi, Korea c Agency for Defense Development, Yuseong, P.O. Box 35-4, Daejeon 305-600, Korea d Korea Institute of Energy Research, 102, Gajeong-ro, Yuseong, Daejeon 305-343, Korea
Abstract
A sulfur-polyacrylonitrile-carbon nanotube (SPANC) composite is prepared by mixing and heat treatment of sulfur, polyacrylonitrile, and carbon nanotubes, with a high sulfur content of 61.94 wt%. The electrochemical properties of a Li/ SPANC cell are investigated using 1,2-dimethoxyethan (ethylene glycol dimethyl ether, DME) and 1,3-dioxlane (ethylene glycol methylene ether, DOL) electrolytes. The Li/SPANC cell using the ether-based electrolytes shows high first discharge capacity of 1,037 mAh g−1 at a rate of 0.1 C. And at a high rate of 1 C, it presents excellent cyclability, yielding a first discharge capacity of 500 mAh g−1 and retaining 80% of this capacity at the 100th cycle.

Keywords: Composites, Electrochemical properties, Energy storage.

This Article

  • 2015; 16(2): 199-202

    Published on Apr 30, 2015

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