Atomically Thin Mesoporous Co3O4 Layers Strongly Coupled with N‐rGO Nanosheets as High‐Performance Bifunctional Catalysts for 1D Knittable Zinc–Air Batteries,Advanced Materials

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Atomically Thin Mesoporous Co3O4 Layers Strongly Coupled with N‐rGO Nanosheets as High‐Performance Bifunctional Catalysts for 1D Knittable Zinc–Air Batteries
Advanced Materials ( IF 27.4 ) Pub Date : 2017-12-06 , DOI: 10.1002/adma.201703657
Yingbo Li ₁ , Cheng Zhong _{1,

2} , Jie Liu ₁ , Xiaoqiao Zeng ₃ , Shengxiang Qu ₁ , Xiaopeng Han ₂ , Yida Deng ₂ , Wenbin Hu _{1,

2} , Jun Lu ₃

Affiliation

Under development for next‐generation wearable electronics are flexible, knittable, and wearable energy‐storage devices with high energy density that can be integrated into textiles. Herein, knittable fiber‐shaped zinc–air batteries with high volumetric energy density (36.1 mWh cm⁻³) are fabricated via a facile and continuous method with low‐cost materials. Furthermore, a high‐yield method is developed to prepare the key component of the fiber‐shaped zinc–air battery, i.e., a bifunctional catalyst composed of atomically thin layer‐by‐layer mesoporous Co₃O₄/nitrogen‐doped reduced graphene oxide (N‐rGO) nanosheets. Benefiting from the high surface area, mesoporous structure, and strong synergetic effect between the Co₃O₄ and N‐rGO nanosheets, the bifunctional catalyst exhibits high activity and superior durability for oxygen reduction and evolution reactions. Compared to a fiber‐shaped zinc–air battery using state‐of‐the‐art Pt/C + RuO₂ catalysts, the battery based on these Co₃O₄/N‐rGO nanosheets demonstrates enhanced and stable electrochemical performance, even under severe deformation. Such batteries, for the first time, can be successfully knitted into clothes without short circuits under external forces and can power various electronic devices and even charge a cellphone.

中文翻译：

原子薄的中孔Co3O4层与N-rGO纳米片牢固结合，可作为一维可编织锌空气电池的高性能双功能催化剂

下一代可穿戴电子设备正在开发具有高能量密度的柔性，可编织和可穿戴能量存储设备，这些设备可以集成到纺织品中。在此，通过简便且连续的方法用低成本材料制造了具有高体积能量密度（36.1 mWh cm ^-3）的可编织纤维状锌-空气电池。此外，还开发了一种高产率方法来制备纤维状锌-空气电池的关键组件，即由原子薄层逐层介孔的Co ₃ O ₄ /氮掺杂还原氧化石墨烯组成的双功能催化剂。（N-rGO）纳米片。受益于Co ₃ O ₄的高表面积，中孔结构和强大的协同作用和N-rGO纳米片，双功能催化剂对氧还原和放出反应具有很高的活性和优异的耐久性。与使用最先进的Pt / C + RuO ₂催化剂的纤维状锌空气电池相比，基于这些Co ₃ O ₄ / N-rGO纳米片的电池即使在恶劣的环境下也表现出增强和稳定的电化学性能。形变。这种电池首次可以成功地编织成衣服而不会在外力作用下发生短路，并且可以为各种电子设备供电，甚至可以给手机充电。

更新日期：2017-12-06

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