The development of efficient bifunctional electrodes with extraordinary mass activity and robust stability is an eternal yet challenging goal for the water‐splitting process. Surface reconstruction during electrocatalysis can form fresh‐composition electrocatalysts with unusual amorphous phases in situ, which are more active but difficult to prepare by conventional methods. Here, a facile strategy based on fast reconstruction of amorphous nanofilm precursors is proposed for exploring precious‐metal‐free catalysts with good electronic conductivity, ultrahigh activity, and robust stability. As a proof of concept, an amorphous SrCo_0.85Fe_0.1P_0.05O_3−δ (SCFP) nanofilm precursor with weak chemical bonds deposited onto a conductive nickel foam (NF) substrate (SCFP‐NF) is synthesized by utilizing a high‐energy argon plasma to break the strong chemical bonds in a crystalline SCFP target. The quickly reconstructed SCFP‐NF bifunctional catalysts show ultrahigh mass activity of up to 1000 mA mg⁻¹ at an overpotential of 550 mV and extremely long operational stability of up to 650 h at 10 mA cm⁻², significantly overperforming state‐of‐the‐art precious‐metal catalysts. Such a strategy is further demonstrated to be a universal method, which can be applied to accelerate the reconstruction of other material systems to obtain various efficient electrocatalysts.

中文翻译：

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基于非晶纳米膜前体的快速原位重建设计优良水分解电催化剂的通用策略

具有卓越的质量活性和强大的稳定性的高效双功能电极的开发是水分解过程中永恒而又具有挑战性的目标。电催化过程中的表面重建可形成具有原位不寻常无定形相的新鲜组成的电催化剂，这种催化剂活性更高，但难以通过常规方法制备。在此，提出了一种基于快速重构非晶态纳米膜前体的简便策略，以探索具有良好电子导电性，超高活性和稳健性的无贵金属催化剂。作为概念证明，非晶态SrCo _0.85 Fe _0.1 P _0.05 O _{3− δ}（SCFP）具有弱化学键沉积在导电泡沫镍（NF）基板（SCFP-NF）上的（SCFP）纳米膜前体是通过利用高能氩等离子体打破晶体SCFP目标中的强化学键而合成的。快速重建的SCFP-NF双功能催化剂在550 mV的超电势下显示出高达1000 mA mg ^-1的超高质量活性，在10 mA cm ^-2的条件下长达650 h的超长操作稳定性，大大超过了其现状先进的贵金属催化剂。这种策略被进一步证明是一种通用方法，可用于加速其他材料系统的重建以获得各种有效的电催化剂。