Li-S batteries have received unprecedented attention owing to their exceptionally high energy density and low cost. Nevertheless, the daunting challenges of insulating properties, soluble polysulfide shuttling, drastic volume change and sluggish polysulfide conversion kinetics, still hinder their application towards commercialization. Very recently, exciting progresses have been made on inorganic/organic polar hosts as either polysulfide immobilizers or polysulfide redox accelerators, targeting durable Li-S batteries. Herein, self-assembled NiCo₂S₄ granules comprising secondary open-hole tubular structures are first devised as highly-efficient host materials for high-sulfur-loading and durable Li-S batteries. NiCo₂S₄ hosts are featured with their large porosity, high electronic conductivity, rapid ion conduction, strong polysulfide immobilization capability and catalytic effect on polysulfide redox, thus greatly ameliorating the polysulfide-shuttle issue and accelerating the polysulfide conversion kinetics. Therefore, the NiCo₂S₄/S cathode shows a reversible capacity of 1387 mAh g^-1 at 0.2 C and retains a value of 543 mAh g^-1 after 500 cycles at 2 C. Impressively, the NiCo₂S₄/S cathode with a sulfur loading of 8.9 mg cm^-2 exhibits high areal capacity of 8.3 mAh cm^-2, low polarization and high cycling stability. Moreover, the as-derived soft-package battery with a 4.5 mg cm^-2 sulfur loading can power 169 light-emitting diodes, verifying its great potential for practical application.

Li-S电池由于其极高的能量密度和低成本而受到了前所未有的关注。然而，绝缘性能，可溶的多硫化物穿梭，剧烈的体积变化和缓慢的多硫化物转化动力学的艰巨挑战仍然阻碍了它们在商业化中的应用。最近，针对耐用的Li-S电池，作为多硫化物固定剂或多硫化物氧化还原促进剂的无机/有机极性主体取得了令人振奋的进展。在此，首先设计出具有次级开孔管状结构的自组装NiCo ₂ S ₄颗粒作为用于高硫负载和耐用的Li-S电池的高效主体材料。镍钴₂ S ₄基质具有高孔隙率，高电子电导率，快速离子传导，强大的多硫化物固定能力以及对多硫化物氧化还原的催化作用，从而大大改善了多硫化物-穿梭问题并加速了多硫化物的转化动力学。因此，NiCo ₂ S ₄ / S阴极在0.2 C时可逆容量为1387 mAh g ^-1，在2 C下经过500次循环后仍保持543 mAh g ^-1的值。令人印象深刻的是，NiCo ₂ S ₄ / S阴极硫含量为8.9 mg cm ^{-2的情况下}显示的面积容量为8.3 mAh cm ^-2，低极化和高循环稳定性。此外，硫载量为4.5 mg cm ^-2的软包装电池可以为169个发光二极管供电，从而证明了其在实际应用中的巨大潜力。