材料科学
纳米孔
碳纤维
锂(药物)
氧化物
原位
硫黄
复合材料
钥匙(锁)
化学工程
纳米技术
复合数
冶金
有机化学
医学
化学
内分泌学
工程类
生态学
生物
作者
Runming Tao,Susheng Tan,Xiang Lyu,Xiao‐Guang Sun,Jun Yang,Di Xie,Zhijia Du,Krzysztof Z. Pupek,Sheng Dai,Jianlin Li
出处
期刊:Nano Energy
[Elsevier]
日期:2024-08-01
卷期号:: 110091-110091
标识
DOI:10.1016/j.nanoen.2024.110091
摘要
Lithium-sulfur batteries (LSBs) with high energy density are promising for energy storage. However, conventional polypropylene-based separator cannot avoid polysulfides shuttling which impedes the practical application of LSBs. Herein, an in-situ ionothermal synthesis strategy that concurrently applies ionic liquid as the solvent, template and high-yield carbon source is proposed for the facile preparation of nanoporous carbon/oxide composite separator modifiers. The composites exhibit features of high polarity, self doping, oxygen vacancy, heteroatom doping, abundant defects and high electronic conductivity. Theoretical and experimental studies suggest that the composites can efficiently trap and convert polysulfides for high-performance LSBs. Indeed, in the composite-modified LSBs with next-generation roll-to-roll dry-processed high-loading sulfur cathodes, enhanced performance is achieved, revealing the effectiveness of the composites as functional materials towards separator modification. Therefore, the proposed strategy and its delivered nanoporous composites exhibit excellent versatility and practicality for high-performance LSBs.
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