Natural Integrated Carbon Architecture for Rechargeable Lithium–Sulfur Batteries

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• 作者：Jiaqi Xu ; Kuan Zhou ; Fang Chen ; Wei Chen ; Xiangfeng Wei ; Xue-Wei Liu ; Jiehua Liu
• 刊名：ACS Sustainable Chemistry & Engineering
• 出版年：2016
• 出版时间：March 7, 2016
• 年：2016
• 卷：4
• 期：3
• 页码：666-670
• 全文大小：418K
• ISSN：2168-0485

文摘

Natural integrated carbon architecture cathodes without any additives, which were derived from the bark of plane trees, have highly loaded sulfur of 3.2–4.2 mg cm^–2. The as-obtained carbon slice has an integrated architecture with micropore-to-macrospore distribution and a large surface area of 528 m² g^–1. As a result, the integrated carbon–sulfur cathode exhibited an initial discharge capacity of 1159 mA h g^–1 at 0.2 A g^–1 for a lithium–sulfur battery. Even after 60 cycles, a high specific capacity of 608 mA h g^–1 with a high Coulombic efficiency (>98%) was retained, much better than MWCNTs-based electrodes and macropore-destroyed carbon slices.