Gluing Carbon Black and Sulfur at Nanoscale: A Polydopamine-Based “Nano-Binder” for Double-Shelled Sulfur Cathodes

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• 作者：Feng Wu ; Yusheng Ye ; Renjie Chen ; Teng Zhao ; Ji Qian ; Xiaoxiao Zhang ; Li Li ; Qianming Huang ; Xuedong Bai and Yi Cui
• 刊名：Advanced Energy Materials
• 出版年：2017
• 出版时间：February 8, 2017
• 年：2017
• 卷：7
• 期：3
• 全文大小：4693K
• ISSN：1614-6840

文摘

A Polydopamine-based “nano-binder”, which can glue carbon and sulfur at nanoscale, is used to construct stable double-shelled sulfur cathodes. This unique hierarchical design for S cathode can not only offer a physical barrier for trapping polysulfides, but also prevent conducting carbon black from detaching to cathode surface. Polydopamine with high elasticity and excellent isotropy can prevent the cathode from deformation.