Designing the optimum cathode configuration for lithium–sulfur (Li–S) batteries has held tremendous scientific momentum to achieve high energy density, fast reaction kinetics, and superior cycle retention. Herein, a self-standing and flexible [email protected]/CNTs (PCG) paper as sulfur host is constructed by integrating multiwalled carbon nanotubes into [email protected] graphene oxide hybrid structure, rooted from in situ redox reaction and spontaneous assembly of pyrrole and graphene oxide. The three-dimensional (3D) corrugated papery frameworks with carbon nanotube (CNT) pillars deliver a highly conducting pathway for electron and ion transfer. Theoretical calculations indicate that ample nitrogen- and oxygen-containing functional groups can form strong polar–polar interaction with lithium polysulfides. Thus, the assembled lightweight PCG-S electrode exhibits a high gravimetric capacity of 1201.9 mA h g^–1 and retains 727.8 mA h g^–1 at 0.2 C after 450 cycles, remarkable rate performance, and excellent cyclic stability with an ultralow decay rate of 0.044% per cycle during 200 cycles at 1 C. Delightedly, thanks to its unique structure, the volumetric sulfur loading amount in the flexible electrode can reach ca. 0.82 g cm^–3, which endows the cathode with an ultrahigh volumetric capacity of 975 A h L^–1 at 0.2 C simultaneously. This dense monolithic paper appears to be a scalable potential for developing high-performance cathodes in emerging flexible devices.

中文翻译：

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密集包装的3D波纹状纸状电极作为容量超高的锂硫电池的多硫化物储液罐

为锂-硫（Li-S）电池设计最佳的阴极配置，已经取得了巨大的科学动力，以实现高能量密度，快速的反应动力学和出色的循环保持性。在此，通过将多壁碳纳米管整合到[电子邮件保护]的氧化石墨烯杂化结构中，构建了自支撑且灵活的[电子邮件保护] / CNTs（PCG）纸作为硫基质，该结构源于原位氧化还原反应和吡咯和三氯甲烷的自发组装。氧化石墨烯。具有碳纳米管（CNT）支柱的三维（3D）波纹纸质框架为电子和离子转移提供了高传导性的途径。理论计算表明，充足的含氮和氧官能团可与多硫化锂形成强极性相互作用。从而，^–1并在450次循环后在0.2 C时保持727.8 mA hg ^–1，具有出色的速率性能和出色的循环稳定性，在1 C的200次循环中每循环0.044％的超低衰减率。由于其独特的结构，柔性电极中硫的体积加载量可以达到约。0.82 g cm ^–3，使阴极在0.2 C时同时具有975 A h L ^–1的超高容量。这种致密的整体纸似乎是在新兴的柔性设备中开发高性能阴极的可扩展潜力。