Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9760337 | Journal of Power Sources | 2005 | 5 Pages |
Abstract
Cycle characteristics of conductive sulfur-containing materials (CSMs) synthesized by heating the mixture of polyacrylonitrile and elemental sulfur at a wider temperature region from 250 to 800 °C are presented. The cyclability is improved remarkably for CSMs obtained above 400 °C. A stable capacity of CSM prepared at 450 °C maintains about 470 mAh gâ1 and the capacity retention remains ca. 90% after near 380 cycles. Fourier-transform infrared spectroscopy (FTIR) and Raman characterizations disclose that the fundamental chemical structure of CSMs is composed of dehydropyridine type matrix with SS bond in side-chain. Such unique structure and better electrical conductivity ensure the excellent cycle performance of the prepared CSMs.
Related Topics
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Authors
Xianguo Yu, Jingying Xie, Ying Li, Haijiang Huang, Chunyan Lai, Ke Wang,