Developing an air electrode with high efficiency and stable performance is essential to improve the energy conversion efficiency and lifetime of zinc–air battery. Herein, Ni₃Pt alloy is deposited on 3D nickel foam by a pulsed laser deposition method, working as a stable binder‐free air electrode for rechargeable zinc–air batteries. The polycrystalline Ni₃Pt alloy possesses high oxygen‐conversion catalytic activity, which is highly desirable for the charge and discharge process in zinc–air battery. Meanwhile, this sample technique constructs an integrated and stable electrode structure, which not only has a 3D architecture of high conductivity and porosity but also produces a uniform Ni₃Pt strongly adhering to the substrate, favoring rapid gas and electrolyte diffusion throughout the whole energy conversion process. Employed as an air electrode in zinc–air batteries, it exhibits a small charge and discharge gap of below 0.62 V at 10 mA cm⁻², with long cycle life of 478 cycles under 10 min per cycle. Furthermore, benefitting from the structural advantages, a flexible device exhibits similar electrochemical performance even under the bending state. The high performance resulting from this type of integrated electrode in this work paves the way of a promising technique to fabricate air electrodes for zinc–air batteries.

中文翻译：

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用于锌空气电池的无粘合剂 3D 集成 Ni@Ni3Pt 空气电极。

开发高效、性能稳定的空气电极对于提高锌空气电池的能量转换效率和寿命至关重要。在此，Ni ₃ Pt合金通过脉冲激光沉积方法沉积在3D镍泡沫上，作为可充电锌空气电池的稳定的无粘合剂空气电极。多晶Ni ₃ Pt合金具有高氧转化催化活性，这对于锌空气电池的充放电过程非常理想。同时，该样品技术构建了一个集成且稳定的电极结构，该结构不仅具有高电导率和孔隙率的3D结构，而且产生了均匀的Ni 3 Pt，牢固地粘附在基底上，有利于整个能量转换过程中气体和电解质的_快速扩散过程。^{作为锌空气电池的空气电极，它在10 mA cm -2}下表现出低于0.62 V的小充放电间隙，并且在每个循环10分钟的情况下具有478次循环的长循环寿命。此外，得益于结构优势，柔性器件即使在弯曲状态下也表现出相似的电化学性能。这项工作中这种集成电极所产生的高性能为制造锌空气电池空气电极的有前途的技术铺平了道路。