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首页> 外文期刊>Advanced energy materials >Lithium–Sulfur Cells: The Gap between the State-of-the-Art and the Requirements for High Energy Battery Cells
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Lithium–Sulfur Cells: The Gap between the State-of-the-Art and the Requirements for High Energy Battery Cells

机译：锂硫电池：最新技术与高能电池的要求之间的差距

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摘要

Li–S cells are considered a highly attractive electrochemical storage system, especially due to their high potential gravimetric energy density. The long-term target of all Li–S research activities must be to outperform state-of-the-art Li-ion cells. A current benchmark is the Panasonic NCR18650B, which has a gravimetric energy density of ≈240 Wh kg−1 and several hundred relatively stable cycles. The possible 18650 Li–S cell energies and cell costs are calculated for various sulfur loads, sulfur utilizations, and electrolyte/sulfur ratios with the aim of determining the cell and electrode property values required to outperform the NCR18650B. These values are compared with statistical information obtained from an extensive literature review of 274 Li–S publications over the last 12 years to show the gap between state-of-the-art Li–S research and requirements for high energy density cells. Finally, a carbon nanotubes-based electrode is introduced, which meets important criteria for obtaining high gravimetric cell energy densities.
机译：Li-S电池被认为是一种极具吸引力的电化学存储系统，尤其是由于它们具有高的潜在重量能量密度。所有Li–S研究活动的长期目标必须是超越最先进的锂离子电池。当前的基准是Panasonic NCR18650B，其重量能量密度约为240 Wh kg-1，并且具有数百个相对稳定的循环。针对各种硫负载，硫利用率和电解质/硫比，计算了可能的18650 Li–S电池能量和电池成本，目的是确定性能优于NCR18650B的电池和电极性能值。将这些值与过去12年中对274 Li-S出版物的大量文献综述中获得的统计信息进行比较，以显示最新的Li-S研究与对高能量密度电池的要求之间的差距。最后，介绍了一种基于碳纳米管的电极，该电极符合获得高重量电池能量密度的重要标准。

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