The widespread application of nickel/cobalt-based materials for aqueous alkaline Zn batteries is hindered by the low actual discharge capacity and inferior cycling durability arising from the limited conductivity and electrochemical reaction kinetics. Herein, an effective approach is demonstrated to achieve high-efficiency and flexible cathode of alkaline Ni//Zn batteries by doping sulfur hydrothermally into NiCo₂O₄ (S–NCO). Compared to bare NiCo₂O₄, the S–NCO sample exhibits higher electric conductivity and faster kinetics. Consequently, the alkaline S–NCO//Zn battery presents a higher areal capacity (0.721 mAh cm⁻² at the current density of 1 mA cm⁻²), long-term lifespan without capacity attenuation after 4000 cycles and satisfactory coulombic efficiency of ∼100%. Moreover, an excellent flexibility of S–NCO has been proved by the stable electrochemical performance in the charge-discharge measurements under various bending conditions.

由于电导率和电化学反应动力学受限，导致实际放电容量低和循环耐久性差，阻碍了镍/钴基材料在水性碱性锌电池中的广泛应用。_{在此，通过将硫水热掺杂到 NiCo 2} O ₄ (S-NCO)中，证明了一种实现碱性 Ni//Zn 电池高效柔性正极的有效方法。与裸露的 NiCo ₂ O _4相比，S-NCO 样品表现出更高的电导率和更快的动力学。因此，碱性 S-NCO//Zn 电池呈现出更高的面积容量（在 1 mA cm ^-2 的电流密度下为0.721 mAh cm ^-2), 4000 次循环后没有容量衰减的长期寿命和 ~100% 的令人满意的库仑效率。此外，在各种弯曲条件下的充放电测量中稳定的电化学性能证明了S-NCO优异的柔韧性。