Fast charge transfer and lithium-ion transport in the electrodes are necessary for high performance Li–S batteries. Herein, a N-doped carbon-coated intercalated-bentonite (Bent@C) with interlamellar ion path and 3D conductive network architecture is designed to improve the performance of Li–S batteries by expediting ion/electron transport in the cathode. The interlamellar ion pathways are constructed through inorganic/organic intercalation of bentonite. The 3D conductive networks consist of N-doped carbon, both in the interlayer and on the surface of the modified bentonite. Benefiting from the unique structure of the Bent@C, the S/Bent@C cathode exhibits a high initial capacity of 1,361 mA h g −1 at 0.2C and achieves a high reversible capacity of 618.1 m Ah g −1 at 2C after 500 cycles with a sulfur loading of 2 mg cm −2 . Moreover, with a higher sulfur loading of 3.0 mg cm −2 , the cathode still delivers a reversible capacity of 560.2 mA h g −1 at 0.1C after 100 cycles.

中文翻译：

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膨润土主体中有效的离子通道和3D导电碳网络可实现稳定且高速率的锂硫电池

高性能Li–S电池必须在电极中进行快速的电荷转移和锂离子迁移。在本文中，设计了一种具有层间离子路径和3D导电网络体系结构的N掺杂碳包覆的插层膨润土（Bent @ C），以通过加速阴极中的离子/电子传输来提高Li-S电池的性能。层间离子通道是通过膨润土的无机/有机插层构建的。3D导电网络在中间层和改性膨润土的表面均由N掺杂碳组成。得益于Bent @ C的独特结构，S / Bent @ C阴极在0.2C时具有1,361 mA hg -1的高初始容量，在500次循环后在2C时可实现618.1 m Ah g -1的高可逆容量。硫含量为2 mg cm -2。而且，