Lei Zhang, Jiawen Cui, Haoxian Zhu, Kun Yang, Wei Li, Li Sun
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引用次数: 0
Abstract
The shuttling effect of polysulfides in lithium-sulfur batteries seriously affects their performance. Herein, NiFe2O4 derived from natural hematite is coated on a PP separator (NFO@PP), which can effectively block the shuttling of polysulfides and has strong adsorption and catalytic capabilities. The NFO@PP cell has an initial capacity of up to 1258.1 mA h g-1 at 0.1C and still has 809.6 mA h g-1 at 2C. Impressively, at 0.5C, the NFO@PP cell retains a specific capacity of 612.1 mA h g-1 after 1000 cycles. The successful application of abundant natural hematite in lithium-sulfur batteries will certainly be of great significance to the development of more cost-effective energy storage devices.
锂硫电池中多硫化物的穿梭效应严重影响其性能。本文将天然赤铁矿中提取的NiFe2O4包覆在PP分离器（NFO@PP）上，可以有效阻断多硫化物的穿梭，具有较强的吸附和催化能力。NFO@PP电池在0.1C时的初始容量高达1258.1 mA h g-1，在2C时仍有809.6 mA h g-1。令人印象深刻的是，在0.5℃下，NFO@PP电池在1000次循环后保持612.1 mA h -1的比容量。丰富的天然赤铁矿在锂硫电池中的成功应用，必将对开发更具成本效益的储能装置具有重要意义。
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