Low-cost, porous carbon current collector with high sulfur loading for lithium-sulfur batteries

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• 作者：Sheng-Heng Chung ; Arumugam Manthiram
• 关键词：Lithium&ndash ; sulfur batteries ; Porous current collectors ; Cell configuration ; Cathode preparation ; Cathode architecture
• 刊名：Electrochemistry Communications
• 出版年：January, 2014
• 年：2014
• 卷：38
• 期：Complete
• 页码：91-95
• 全文大小：1096 K

文摘

Li-S batteries with a porous carbon current collector (PCCC), high sulfur loading (2.3 mg cm^鈭?#xA0;2, equal to 80 wt.% sulfur content), high capacity, and long cycle life have been fabricated with a simple one-step paste absorption method. The intimate contact between the insulating sulfur and the embedded conductive matrix allows high active material loading. The high absorptivity of electrolyte by the PCCC facilitates efficient retention of soluble polysulfides within the PCCC, so the 3D cathode architecture stabilizes the electrochemical reaction within the porous space.