Inferior specific capacity and sluggish redox kinetics are the most stubborn problems lithium-ion and lithium-sulfur batteries (LIBs and LSBs) are facing, respectively. Here we report a facile fabrication of self-supported hollow Co₃O₄@carbon nanotubes on carbon cloth (H-Co₃O₄@CNT/CC) through a mild pyrolysis-oxidation process. The additive- and binder-free H-Co₃O₄@CNT/CC shows excellent electrochemical performances as both LIBs and LSBs electrodes. As a robust integrated anode for LIBs, the areal capacities are 2.72 mAh cm^-2 at the current density of 0.5 C over 1000 cycles. While as a durable cathode host for LSBs, favorable areal capacities of 2.37 mAh cm⁻² are maintained with a low capacity decay of 0.11% per cycle at the sulfur loading of 6 mg cm^-2 and current density of 1 C after 400 cycles. Electrochemical technology, ex situ Raman spectroscopy and DFT calculations are performed to comprehensively analyze H-Co₃O₄@CNT/CC via thermodynamics and kinetics. It is demonstrated that the hierarchically hollow interior structure, strong adsorb ability of Co₃O₄ toward polysulfides and three-dimensional (3D) inter-connected conductive carbon framework are responsible for the high areal capacity, fast redox kinetics and cycling durability.

比容量差和氧化还原动力学缓慢是锂离子和锂硫电池（LIB 和 LSB）分别面临的最顽固的问题。在这里，我们报告了通过温和的热解-氧化过程在碳布 (H-Co ₃ O ₄ @CNT/CC) 上轻松制造自支撑空心 Co ₃ O _{4 @碳纳米管。}不含添加剂和粘合剂的 H-Co ₃ O ₄ @CNT/CC 作为 LIB 和 LSB 电极均表现出优异的电化学性能。作为 LIB 的坚固集成阳极，在 0.5 的电流密度下，面积容量为 2.72 mAh cm ^-2 C 超过 1000 次循环。虽然作为 LSB 的耐用正极主体，但在 6 mg cm ^-2的硫负载和 1 C 的电流密度下，在 400 次循环后，保持 2.37 mAh cm ^-2的有利面积容量，每个循环的容量衰减低 0.11% 。采用电化学技术、非原位拉曼光谱和 DFT 计算，通过热力学和动力学综合分析 H-Co ₃ O _{4 @CNT/CC。}证明了分层中空的内部结构，Co ₃ O _{4的吸附能力强}   多硫化物和三维（3D）互连导电碳框架是高面积容量、快速氧化还原动力学和循环耐久性的原因。