One-dimensional (1D) fiber-based batteries stand as a promising route for next-generation wearable devices, owing to their combined energy storage capability and wearability. However, the development of efficient fiber electrodes and high-quality battery configurations that retain excellent electrochemical performance and garment compatibility while withstanding variable mechanical deformations remains a pressing challenge. In this study, NiCoS@rGO nanocomposites with stable structures and excellent electrochemical performance were constructed using an in-situ hydrothermal strategy. The highly conductive network of reduced graphene oxide (rGO) improved the electron transport efficiency of the nanocomposites, while mitigating volume changes, structural collapse, and self-aggregation of NiCoS nanoparticles during the charging/discharging cycle. As expected, the nanocomposite cathodes in the Zn-based batteries exhibited remarkable discharging capacity (277.11 mAh g) and cycling performance (70% retention after 2000 cycles). Subsequently, a composite fiber cathode (NiCoS@rGO-PU-CNTs) with tailorable length and core-shell like structure was fabricated via wet spinning. Benefiting from the introduced carbon nanotubes (CNTs) and polyurethane (PU), the composite fiber cathode formed efficient dual-conducting networks and stable core-shell like structures, thereby improving the electron transport pathways and mechanical flexibility. Finally, as a proof of concept, the independent NiCoS@rGO-PU-CNTs cathode and independent Zn@SSY (stainless steel yarn) anode were woven into a knitted fabric, creating tunable serpentine footprint fabric Zn-based batteries with exceptional electrochemical properties (175.29 mAh g and 0.088 mAh cm), coupled with remarkable electrochemical stability and mechanical deformation durability. The engineering strategy reported herein provides a promising platform for the quick, facile, and continuous preparation of composite fiber cathodes and tailorable wearable energy textiles.

中文翻译：

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可调谐织物锌基电池，采用核壳状纤维电极，具有增强的变形耐久性

一维（1D）纤维电池因其结合的能量存储能力和可穿戴性而成为下一代可穿戴设备的有前途的路线。然而，开发高效的纤维电极和高质量的电池配置，保持优异的电化学性能和服装兼容性，同时承受可变的机械变形，仍然是一个紧迫的挑战。在本研究中，采用原位水热策略构建了具有稳定结构和优异电化学性能的NiCoS@rGO纳米复合材料。还原氧化石墨烯 (rGO) 的高导电网络提高了纳米复合材料的电子传输效率，同时减轻了充电/放电循环过程中 NiCoS 纳米颗粒的体积变化、结构崩溃和自聚集。正如预期的那样，锌基电池中的纳米复合材料正极表现出显着的放电容量（277.11 mAh g）和循环性能（2000次循环后保留率为70%）。随后，通过湿法纺丝制备了具有可定制长度和核壳结构的复合纤维阴极（NiCoS@rGO-PU-CNTs）。得益于碳纳米管（CNT）和聚氨酯（PU）的引入，复合纤维阴极形成了高效的双导电网络和稳定的核壳结构，从而改善了电子传输途径和机械灵活性。最后，作为概念验证，独立的 NiCoS@rGO-PU-CNTs 阴极和独立的 Zn@SSY（不锈钢纱）阳极被编织成针织物，创造出具有优异电化学性能的可调蛇形足迹织物锌基电池（ 175.29 mAh g和0.088 mAh cm），加上卓越的电化学稳定性和机械变形耐久性。本文报道的工程策略为快速、简便、连续地制备复合纤维阴极和可定制的可穿戴能源纺织品提供了一个有前途的平台。